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Articles de revues sur le sujet "High-Intensity exercises"
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Maddigan, Meaghan E., Kathleen M. Sullivan, Israel Halperin, Fabien A. Basset et David G. Behm. « High tempo music prolongs high intensity exercise ». PeerJ 6 (8 janvier 2019) : e6164. http://dx.doi.org/10.7717/peerj.6164.
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Music has been shown to reduce rating of perceived exertion, increase exercise enjoyment and enhance exercise performance, mainly in low-moderate intensity exercises. However, the effects of music are less conclusive with high-intensity activities. The purpose of this with-participant design study was to compare the effects of high tempo music (130 bpm) to a no-music condition during repeated high intensity cycling bouts (80% of peak power output (PPO)) on the following measures: time to exercise end-point, rating of perceived exertion (RPE), heart rate (HR), breathing frequency, ventilatory kinetics and blood lactate (BL). Under the music condition, participants exercised 10.7% longer (p = 0.035; Effect size (ES) = 0.28) (increase of 1 min) and had higher HR (4%; p = 0.043; ES = 0.25), breathing frequency (11.6%; p < 0.001; ES = 0.57), and RER (7% at TTF; p = 0.021; ES = 1.1) during exercise, as measured at the exercise end-point. Trivial differences were observed between conditions in RPE and other ventilatory kinetics during exercise. Interestingly, 5 min post-exercise termination, HR recovery was 13.0% faster following the music condition (p < 0.05) despite that music was not played during this period. These results strengthen the notion that music can alter the association between central motor drive, central cardiovascular command and perceived exertion, and contribute to prolonged exercise durations at higher intensities along with a quicken HR recovery.
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Sara Campos Vaz, Luna, Márcia Reimol De Andrade et Laila Cristina Moreira Damázio. « Morphological aspects of the heart of young rats subjected to high and medium intensity progressive resistance physical exercise protocols ». Concilium 24, no 9 (14 mai 2024) : 577–87. http://dx.doi.org/10.53660/clm-3419-24i33.
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The present study investigated the effects of medium and high intensity physical exercise on the morphology of the heart of young rats, after carrying out two physical exercise protocols on the stairs, medium and high intensity. We used 24 young male Wistar rats, 21 days old, divided into three groups: sedentary control group (CG, n=8), group trained with medium intensity physical exercises (GM, n=8) and group trained with physical exercises high intensity (GA, n=8). For 4 weeks, the animals in the GM and GA groups were subjected to a medium and high intensity physical exercise protocol. The physical exercise protocol was applied over a period of 4 weeks, 5 days a week. After training, the animals were euthanized and the heart was removed for weighing, analysis of macroscopic morphology (left ventricular thickness, weight, analysis of diameter and ventricular area); The 5um sections were then processed and stained with Hematoxylin and Eosin (HE) for subsequent histomorphometric analysis of the cardiomyocytes. The results did not demonstrate significant differences in the macroscopic parameters of the heart (weight, left ventricular thickness, ventricular area, total area, ventricular diameter). A significant difference was observed in the area of cardiomyocytes in the left ventricle of rats that exercised with high intensity. It is concluded that rats exercising at high intensity showed an increase in the area of cardiomyocytes compared to rats that exercised at medium intensity and sedentary ones. Thus, it is concluded that progressive resistance physical exercise on the vertical ladder when performed at high intensity promotes cardiomyocyte hypertrophy in young rats.
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Karaca, İbrahim, Nevin A. Güzel et Erdem Demir. « Hamstring muscle activation during the flywheel exercises ». Journal of Orthopedics Research and Rehabilitation 1, no 4 (30 octobre 2023) : 75–80. http://dx.doi.org/10.51271/jorr-0017.
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Aims: Aim of this study was to determine hamstring activation during flywheel (FW) exercises, identify differences between muscles and classify the exercises. Methods: Exercises were done by professional footballers and electromyography data from hamstring muscles were recorded and normalized according to maximum voluntary isometric contractions (MVIC). Differences between muscles and with-in exercises were compared with repeated measures ANOVA and categorized according to their intensity. Results: The Exercise variable had significant differences (F(3.1,81.5)=96.5, p<0.05) but the muscles variable F(1,26)=2.24, p>0.05) and Exercise*Muscle interaction effect (F(3.1,81.5)=0.97, p>0.05) were not a significantly different. During Romanian Dead Lift, Single Leg Dead Lift, Leg Curl and Single Leg Hamstring Bridge determined over 80% activation according to MVIC for biceps femoris (BF) and medial hamstring (MH) with not significantly different between each other and they were categorized as high-intensity FW exercises (p>.05). During Bilateral Squat for both musclewere determined below 50% according to MVIC and it was categorized as low-intensity FW exercise. During Single Leg Squat and LUNGE in the MH were below 50% according to MVIC, these exercises were categorized as low-intensity FW exercises and in the BF in the range of 50-80% according to MVIC so they were categorized as medium-intensity FW exercises. Conclusion: With this study, both parts of the hamstring contract similarly during the selected FW exercises. Low or moderate intensity FW exercises can be used in the early stages of rehabilitation or preventive hamstring exercise programs, while high intensity ones can be used in later processes.
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Yu, Ming, Xinyi Han, Xiaomei Wang et Rongxin Guan. « Effects of Physical Exercise on Executive Functions among College Students in China : Exploring the Influence of Exercise Intensity and Duration ». Behavioral Sciences 13, no 12 (29 novembre 2023) : 987. http://dx.doi.org/10.3390/bs13120987.
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Background: This study investigates the effects of exercise intensity and duration on executive functions among college students in China. Method: Participants in this study were Chinese college students divided into four groups based on exercise duration and intensity. Each group engaged in physical exercise twice a week for six weeks. Group 1 performed low-intensity exercises for 10 min per session; Group 2 performed low-intensity exercises for 20 min per session; Group 3 performed high-intensity exercises for 10 min per session; and Group 4 performed high-intensity exercise for 20 min per session. Executive functions were assessed in all subjects before the experiment (time 1), after one exercise session (time 2), at the end of the exercise program (time 3), and six weeks after the exercise program (time 4). A mixed ANOVA with a 2 (exercise intensity: low/high) × 2 (duration: short/long) × 4 (time of measurement: time 1/time 2/time 3/time 4) design was employed, with exercise intensity and exercise duration as independent variables and executive functions as the dependent variable. Results: Mixed ANOVA showed that the results revealed a significant main effect of measurement time on working memory accuracy (p < 0.001) and reaction time (p < 0.001); inhibition control accuracy (p < 0.001) and reaction time (p < 0.001); cognitive flexibility accuracy (p < 0.001) and reaction time (p < 0.001). A single session of high-intensity exercise significantly improved executive functions in college students. Both low-intensity and high-intensity exercise were effective in enhancing executive functions, with high-intensity exercise demonstrating better maintenance of the effect. Conclusion: Both exercise intensity and exercise duration were found to enhance executive functions in college students, with exercise intensity showing greater effectiveness than exercise duration.
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Navalta, James W., et Stephen P. Hrncir. « Core Stabilization Exercises Enhance Lactate Clearance Following High-Intensity Exercise ». Journal of Strength and Conditioning Research 21, no 4 (2007) : 1305. http://dx.doi.org/10.1519/r-21546.1.
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NAVALTA, JAMES W., et STEPHEN P. HRNCIR. « CORE STABILIZATION EXERCISES ENHANCE LACTATE CLEARANCE FOLLOWING HIGH-INTENSITY EXERCISE ». Journal of Strength and Conditioning Research 21, no 4 (novembre 2007) : 1305–9. http://dx.doi.org/10.1519/00124278-200711000-00057.
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Shi, Haoyu, et Young-Je Sim. « Effects of weekend-focused exercise on obesity-related hormones and metabolic syndrome markers in male high school students ». Journal of Exercise Rehabilitation 20, no 6 (26 décembre 2024) : 227–34. https://doi.org/10.12965/jer.2448632.316.
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To examine the changes in obesity-related hormones and metabolic syndrome markers in male high school students with obesity following a weekend-focused moderate- or high-intensity exercise program at the recommended weekly physical activity level, or a program of regular exercise 3 times a week at moderate intensity, over a 10-week period. Forty-eight male high school students who were obese with a body fat percentage of ≥ 25% were randomly assigned to one of three groups: a regular moderate-intensity exercise group (n= 17) that freely selected and performed moderate-intensity aerobic and resistance training exercises, every Monday, Wednesday, and Friday, for a total of 150–300 min/wk; a weekend-focused moderate-intensity exercise group (n= 15) that freely selected and performed aerobic and resistance training exercises every Saturday for 150–300 min; and a weekend-focused high-intensity exercise group (n= 16) that freely selected and performed aerobic and resistance training exercises every Sunday for 75–150 min. Insulin and leptin levels significantly decreased in all the groups, with the greatest reduction in the regular exercise group. Abdominal circumference and triglyceride levels significantly decreased in all the groups. Fasting glucose decreased only in the regular exercise group. High-density lipoprotein cholesterol significantly increased in both the regular and weekend-focused moderate-intensity exercise groups. No significant differences in adiponectin levels, and systolic and diastolic blood pressure were observed between the groups. A weekend-focused exercise program has health effects similar to those of regular exercise, highlighting the importance of meeting the recommended weekly physical activity levels.
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Goršič, Maja, Imre Cikajlo, Nika Goljar et Domen Novak. « A Multisession Evaluation of a Collaborative Virtual Environment for Arm Rehabilitation ». PRESENCE : Virtual and Augmented Reality 27, no 3 (juillet 2020) : 274–86. http://dx.doi.org/10.1162/pres_a_00331.
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In recent years, several multi-user virtual environments (VEs) have been developed to promote motivation and exercise intensity in motor rehabilitation. While competitive VEs have been extensively evaluated, collaborative and competitive rehabilitation VEs have seen relatively little study. Therefore, this article presents an evaluation of a VE for post-stroke arm rehabilitation that mimics everyday kitchen tasks and can be used either solo or collaboratively. Twenty subacute stroke survivors exercised with the VE for four sessions, with the first and third sessions involving solo exercise and the other two involving collaborative exercise. Exercise intensity was measured using inertial sensors while motivation was measured with questionnaires. Results showed high motivation and exercise intensity over all four sessions, and 11 of 20 participants preferred collaborative over solo exercise while only 4 preferred solo exercise. However, there were no differences in motivation, exercise duration, or exercise intensity between solo and collaborative sessions. Thus, we cannot currently claim that collaborative exercises are beneficial for upper limb rehabilitation. Future studies should evaluate other collaborative VE designs in different settings (e.g., at home) and with different participant pairs (e.g., patient-unimpaired) to find effective ways to utilize collaborative exercises in motor rehabilitation.
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Behi, Amir, Thomas Davin Fahey, Taher Afsharnezhad et Ali Reza Amani. « Effect of High Intensity Interval Training with Blood Restriction on Anaerobic Performance ». International Journal of Applied Exercise Physiology 6, no 2 (27 août 2017) : 45–52. http://dx.doi.org/10.22631/ijaep.v6i2.181.
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Limiting venous blood flow restriction is a new approach of training aims to improving high level of performance among athletes, which has shown prominent results at muscle hypotrophy and strength. KAATSU[1] is a training system including pressure belt imposed on the proximal part of the upper and lower bodies. The present study aims to investigate the effect of HIIT Kaatsu trainings on anaerobic performance among young athletes. The present quasi experimental research was conducted through a pre-test and post-test and three groups including KAATSU intensive interval exercises (n=11), intense interval exercise (n=9) and a control group (n=10). The exercises included running distances of 20 and 40 meters. In the beginning of the protocol most of the exercises was in short distances and as the sessions proceeded, the number of the sets and repetitions increased and it reached to its highest intensity in the last session. During the exercise protocol, intensity of training was considered to be the highest running speed and based on their abilities each individual tried to run as fast as possible. The exercise load was defined based on repetitions and the sets. In the 20 meters distances, the participants took a ten second rest after each repetition and a one minute rest after each set and in 40 meters distances; Subjects took a 20 second rest after each repetition and 2 minute rest between sets. The control group did not performed any of the mentioned exercises. Moreover, before and after four weeks of training the individuals were given RAST and Anaerobic Biking Wingate Test. Statistical result has been shown, there is a significant change between the maximum anaerobic power in Wingate biking test after four weeks within KAATSU intensive interval (P≥ 0.05) and intensive interval (P≥ 0.05) groups, but no significant change was detected in the control group (P> 0.05). The statistical analysis of this research has been shown that there is of current investigation indicated that compared to intensive interval exercise alone, attending the KAATSU intensive exercises is more effective on the highest anaerobic power ( Wingate bike) and the lowest as well as the average of anaerobic power.
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Safarinejad, Mohammad Reza, Kamran Azma et Ali Asgar Kolahi. « The effects of intensive, long-term treadmill running on reproductive hormones, hypothalamus–pituitary–testis axis, and semen quality : a randomized controlled study ». Journal of Endocrinology 200, no 3 (3 décembre 2008) : 259–71. http://dx.doi.org/10.1677/joe-08-0477.
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Effects of intensive exercise on hypothalamus–pituitary–testis (HPT) axis remain controversial. Our aim was to determine the effects of intensive, long-term treadmill running on reproductive hormones, HPT axis, and semen quality. A total of 286 subjects were randomly assigned to moderate-intensity exercise (∼60% maximal oxygen uptake (VO2max); group 1, n=143) and high-intensity exercise (∼80% VO2max; group 2, n=143) groups. The two groups exercised for 60 weeks in five sessions per week, each session lasting 120 min. This was followed by a 36-week low-intensity exercise recovery period. All subjects underwent routine semen analysis. Blood samples were drawn for the determination of the levels of the following hormones: LH, FSH, prolactin, testosterone (T), free testosterone (fT), inhibin B, and sex hormone-binding globulin (SHBG). The HPT axis was assessed using GnRH and human chorionic gonadotropin tests. After 24 weeks of exercise, the subjects exercising with high intensity demonstrated significantly declined semen parameters compared with those exercising with moderate intensity (P=0.03). Serum T and fT began to decrease, and serum SHBG began to increase at the end of 12 weeks with both moderate- and high-intensity exercises. The serum LH and FSH concentrations decreased below the baseline level at 12 weeks in both groups (P=0.07 in group 1 and 0.03 in group 2). Both groups had blunted LH and FSH responses to GnRH. These parameters improved to their pre-exercise level during the recovery period. Long-term strenuous treadmill exercises (overtraining syndrome) have a deleterious effect on reproduction.
Thèses sur le sujet "High-Intensity exercises"
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Ufland, Pierre. « Muscle oxygenation and capacity to repeat high-intensity exercises ». Amiens, 2012. http://www.theses.fr/2012AMIE0018.
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Monitoring non-invasively muscle oxygenation (mO2), inferred from oxygenated haemoglobin (Hb)/myoglobin (Mb) and deoxygenated Hb/Mb measures, has emerged at the end of the 80s with the develoment of near-infrared spectroscopy (NIRS). Today, NIRS devices are portable and make possible to continuously and remotely monitor the balance between oxygen (O2) delivery to working muscles and muscle O2 uptake in cpillary beds of the investigated muscle. For instance, while a high muscle O2 uptake ability in generaly associated with performance improvement, a low muscle O2 uptake ability may be associated with delayed metabolic recovery between successive efforts. The aims of this thesis were to examine the methodological considerations on the use of NIRS to asses mO2 and muscle O2 uptake (mVO2) (studies 1 and 2) and to consider the eventual relashionship that can exist between mO2 and physical performance during repeated high-intensity exercices (studies 2, 4 and 5). We first investigated the reliability and the sensitivity of the post exercise mO2 (study 1). We found a moderate level of reliability, which was independent of exercise intensity during an occlusion-free recovery condition. Conversely, when the recovery of NIRS-derived mVO2 was considered, measures were also moderately reliable but exercise-intensity dependent. In a subsequent study (studie 2), we examined the influence of changes of direction (COD) on mVO2. We observed a greaterm VO2 with COD (i. E. , at similar absolute running speeds, 20-m shuttle runs were associated with higher mVO2 than straight-line runs). These results suggested that mVO2 is also sensitive to running modality (i. E. , COD). In the second part of the thesis, we first examined the role of mO2 recovery in muscular force recovery during repeated-maximal effort (study 3). The results confirmed that mO2 recovery may play a moderate role on the maximal force production. Afterward, we investigated the influence of training background on mVO2 recovery post-exercise (study 4). We found that an endurance training background is associated with faster mVO2 recovery compared with a sprint training background, which was itself related to better repeated-sprint ability. Finally, in a longitudinal study (study 5), we examined the chronic changes on post-sprints mO2 after an aerobic training period. The improvement in repeated-sprint ability after training was related to the acceleration of the mO2 post-sprints, suggesting again that muscle aerobic function might play a role in the (metabolic) between-sprints recoveryIl est généralement accepté qu'une plus grande capacité de consommation d'O2 musculaire est associée à une meilleure performance aérobie. A l'inverse, une faible capacité de consommation d'O2 musculaire est également associée à une récupération inter-effort réduite/ralentie. A la fin des années 80, le suivi non invasif de l'oxygénation musculaire (mO2), déduite par la mesure de l'hémoglobine ([Hb]) / myoglobine ([Mb]) saturé en oxygène (O2) et de l'[Hb]/[Mb] dépourvu d'O2, a émergé dans de nombreuses études avec l'inclusion de la spectroscopie du proche infrarouge (NIRS). Le fait que la NIRS soit devenue portable rend libre l'évaluation continue de la balance entre apport d'O2 aux muscles en action et consommation musculaire d'O2 des lits capillaires du muscle considéré. Dans cette thèse, nous nous sommes attachés à examiner les considérations méthodologiques de l'utilisation de la NIRS pour évaluer mO2 et consommation d’oxygène musculaire (mVO2) (Etudes 1 et 2). Les études 2, 4 et 5 ont étudié les relations éventuelles qui peuvent exister entre la mO2 et la performance lors d'exercices répétés à haute intensité. Initialement nous avons étudié la reproductibilité et la sensibilité de mO2 post-exercice (Etude 1). Un niveau modéré de reproductibilité, ainsi qu'une indépendance des relevés en fonction de l'intensité d'exercice lors de la récupération sans occlusion ont été constatés. Par contre, lorsque la récupération de la mVO2 était observée, il fut relevé que les mesures étaient, certes modérément reproductibles à l’instar de mO2 post-exercice mais à contrario dépendantes de l'intensité d'exercice. Dans une étude subséquente (Etude 2), nous avons inspecté l'influence des changements de direction (COD) sur la mVO2. Nous avons ainsi observé une plus grande mVO2 avec COD : pour des vitesses similaires absolues de course, les courses en navette sur 20 m étaient associées à de plus grandes mVO2 que lors des courses en ligne droite. Ces résultats suggéraient que mVO2 déjà sensible à l’intensité de l’exercice, l’était aussi à la modalité de course (avec ou sans COD). En second lieu, le rôle de la mO2 sur le paramètre de récupération de force musculaire durant des efforts maximaux répétés a été examiné (Etude 3). Les résultats ont confirmé que la récupération de mO2 peut jouer un rôle modéré dans la production de force maximale. Suite à cette étude, nous avons souhaité évaluer l'influence du type d'entraînement sur la récupération de mVO2 (Etude 4). Ainsi, la comparaison entre entraînement en endurance et entraînement au sprint révèle une meilleure récupération de mVO2 dans le groupe endurance. Cette accélération de la récupération de mVO2 était liée à une meilleure capacité à répéter des sprints. L’entraînement agit donc sur le paramètre de récupération de mV2. En dernière partie, nous avons inspecté dans une étude longitudinale (Etude 5) les effets d’une période d'entraînement aérobie sur la mO2 post-sprints. L'amélioration de la capacité à répéter des sprints a été associée à l'accélération de la mO2 post-sprints, ce qui confirme que la fonction musculaire aérobie pourrait jouer un rôle au niveau dans la récupération métabolique entre les sprints
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Toma, Kumika. « Effects of High-Carbohydrate and Low-Fat Versus High-Protein and Low-Carbohydrate Diets on High-Intensity Aerobic Exercise ». View abstract, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3372362.
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Rognmo, Øivind. « High-intensity aerobic exercise and cardiovascular health ». Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for sirkulasjon og bildediagnostikk, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-5289.
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Regelmessig fysisk aktivitet bedrer den fysiske formen, og er dokumentert å være en viktig bidragsyter med tanke på å redusere forekomsten av sykdom og dødelighet. Det maksimale oksygenopptaket, som er det beste målet på arbeidskapasitet, er vist å være en svært sterk indikator på dødelighet både hos friske og hos pasienter med hjerte-karsykdom. Regelmessig utholdenhetstrening for å øke maksimalt oksygenopptak er derfor anbefalt for bedret helse og økt livslengde. Selv om dette er etablert kunnskap, vet man lite om hvilken intensitet kondisjonstreningen bør gjennomføres med for å oppnå best mulig helsegevinst. Hensikten med denne doktorgradsavhandlingen var derfor å kartlegge hvilken intensitet i kondisjonstreningen som gir best effekt med tanke på å øke det maksimale oksygenopptaket blant pasienter med koronarsykdom. Vi ønsket også å studere hvorvidt intensiteten er viktig for å bedre fysisk form og redusere risikofaktorer for hjerte-karsykdom hos pasienter med metabolsk syndrom, som har en sterk opphopning av disse risikofaktorene. Derfor sammenliknet vi aerob intervalltrening med høy intensitet (80-90 % av maksimalt oksygenopptak) med kontinuerlig kondisjonstrening med moderat intensitet (50-60 % av maksimalt oksygenopptak) der total treningsmengde var lik. Videre ønsket vi å undersøke hvordan blodårenes funksjon og elastisitet ble påvirket av ulik type trening, både blant unge trente og utrente, og blant pasienter med metabolsk syndrom. Resultatene viste at trening med høy intensitet ga bedre effekter enn moderat intensitet for å bedre aerob kapasitet og redusere kjente risikofaktorer forbundet med hjerte-karsykdom, inkludert blodårefunksjonen. Avhandlingen kan derfor bidra med ny innsikt med tanke på bruk av aerob intervalltrening for mer effektivt å bedre kondisjonen og dermed helsen, både blant hjertesyke og hos individer med forhøyet risiko for fremtidig hjerte-karsykdom
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Kaus, Reed J. « Affect and Enjoyment Associated with CrossFit Exercise ». Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1395427844.
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Lakomy, Henryk K. A. « Measurement of external power output during high intensity exercise ». Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/7511.
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James, Oliver. « The effect of self-regulation on high intensity exercise ». Thesis, Abertay University, 2018. https://rke.abertay.ac.uk/en/studentTheses/64d88b8e-7b66-47ec-a99a-f20a5aa92a08.
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The overall aim to this thesis was to identify if the use of self-regulated (SR) rest during high intensity training (HIT) can be used to increase endurance and power output measures between males and females. Study one aimed to determine if males and females can maintain mean power output (MPO) during repeated sprints when using self-regulated (SR) rest, and identify male and female response in MPO when SR rest is reduced. Participants completed four trials of 10 x 6 sec sprints separated by SR rest against 7.5% body mass (BM) as a resistance. If the mean power output (MPO) for all ten sprints in each trial had a coefficient of variation (CV) of ≤ 5.2%, then it was deemed that the participant was able to maintain their MPO. In trials 1-4 males significantly maintained their MPO greater than females in relation to their respected criterion sprint MPO data. In addition to this, only 85% of the participants could maintain their MPO when using SR rest (two males and one female failed). When SR rest was reduced by 10 and 15% there was no difference in CV between these two trials and the original 4 trials. However, MPO significantly dropped greater in females than in males SR rest was reduced by 15%. Therefore, this study indicates that males can use SR rest to maintain their MPO greater than females, and participants may be pacing their sprint efforts to maintain a sub-maximal MPO instead of their maximal MPO when SR rest is reduced by 15%. Study two aimed to compare endurance and Wingate power output adaptations to HIT with a fixed rest (30 sec) or self-regulated rest, and identify if reproducibility of MPO during HIT is correlated to endurance and Wingate power output adaptation. Male participants the same HIT protocol from Study 1 for six sessions over a two-week period. Participants completed the HIT with either SR rest or with a fixed rest (FR) of 30 sec between each sprint. Magnitude in change for time to exhaustion (TTE), time trial (TT) and Wingate power measures was greater in the SR group, whereas VO2 peak increased greater in the FR group. However, no strong correlation between maintaining power output and increasing endurance measures or power measures appeared. Whereas correlation data indicates that VO2 peak increased for the FR group due to a decrease in power output during the trials. Therefore, this study indicates that TTE, TT and Wingate power output experience a greater increase when rest is SR and with the aim of maintaining MPO during HIT. Study three aimed to compare the magnitude in change in VO2 peak, TTE, TT, and critical power (CP) when SR rest is reduced by 15 and 20% during HIT between males and females. Participants completed the same HIT protocol from the previous studies but completed eight HIT sessions over a four week period. Both training groups experienced a significant increase in endurance performance as measured via VO2 peak (males only), TTE, TT and critical power (20% group only). A larger aerobic response during the HIT was significantly correlated to an increase in VO2 peak in both males and females. Increases in critical power was significantly correlated to an improved TT time, which was also significantly correlated to increasing TTE. Indicating that TTE and TT improved due to an increase in greater power output. Reducing SR rest leads to a greater increase in endurance measures compared to non-reduced SR rest (Study 2), apart from females VO2 peak who saw no change. Conclusion: Overall this thesis can conclude that: 1) males appear to maintain their MPO greater than females when using SR rest and females experience a greater drop in trial MPO when SR rest is reduced. 2) Participants may be pacing in trials as CV remains unchanged but MPO decreases. 3) The CV method to identify successful SR rest to maintain MPO is unreliable and doesn’t take into account potential pacing tactics. 4). SR rest in HIT causes a greater increase in TTE, TT and Wingate power output measures, however, using a FR leads to greater increases in VO2 peak all in males. 5) Reduced SR rest causes a greater increase in TTE, TT and VO2 peak (males only) compared to SR rest, and also increases CP. 6) Maintaining MPO during HIT is not strongly correlated to increasing endurance or power output measures.
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Dolan, Lianne Bronagh. « High-intensity exercise and safety concerns in breast cancer survivors ». Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44196.
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Marlin, D. J. « Metabolic response to high-intensity exercise in the thoroughbred horse ». Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/7870.
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The Thoroughbred racehorse is capable of maintaining speeds of approximately 17 m/s for distances of over a mile. This represents an average speed and the Thoroughbred can reach speeds in excess of 20 m/s over short distances. The present series of studies was undertaken to investigate further the metabolic response to high-intensity exercise in the Thoroughbred racehorse. Unlike man, high-intensity exercise in the horse results in an increase in packed cell volume. This in turn causes acute changes in the colligative properties of blood and plasma. The changes in these properties were investigated and the effect on calculation and distribution of metabolites in blood and muscle was determined. The horse has a high capacity for lactate production compared to man and existing methodology for the assessment of muscle buffering capacity in biopsy samples was further developed and investigated. The horse was found to have a significantly higher muscle buffering capacity compared with man and it was calculated that this could be explained wholly on the basis of the higher muscle carnosine content in the horse. The metabolic response to high-intensity exercise was investigated using several exercise models, including single and multiple field gallops and treadmill exercise. A consistent finding was that high-intensity exercise in the Thoroughbred racehorse was nearly always accompanied by a reduction in muscle ATP content. The nature of the ATP decrease was further investigated using a treadmill exercise model. Muscle ATP decrease was found to occur at a particular exercise intensity rather than show a gradual decrease with increasing intensity. The intensity at which muscle ATP content began to decline significantly varied between individual horses, but in each case appeared to coincide with muscle lactate contents of approximately 70 mmol/kg dry muscle. The significance of the decline in ATP is discussed.
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Doherty, Michael. « The effects of caffeine on short-term, high-intensity exercise ». Thesis, University of Bedfordshire, 2004. http://hdl.handle.net/10547/292660.
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The aim of this series of studies was to investigate the effects of oral caffeine ingestion (5 mg . kg-1) on whole-body, short-term, high-intensity exercise (ST; representing an exercise intensity of between 100% -150% V02 max), an area that has received scant attention in the past. It was found that, in common with other 'open-ended' tests, one ST assessment, the maximal accumulated oxygen deficit (MAOD), appeared to lack both validity and reliability. Although traditional reliability markers of MAOD were favourable, the 95% limits of agreement were unacceptably large. In addition, the validity of MAOD was also found to be questionable because a study of elite runners revealed that a large proportion were unable to accomplish a plateau in the V02 -exercise intensity relationship. A follow-up study developed an original bespoke 'preloaded' ST cycling protocol that combined constant-rate exercise with an 'all-out' effort. This protocol appears to have several features that make it a more appropriate assessment to use in ergogenic studies than the MAOD. The work also considered the original, and as yet, undeveloped potential, for the assessment of rating of perceived exertion (RPE) during ST. It was shown for the first time that RPE (Borg scale; 6-20) could be used reliably during constant-rate ST. Three of the ten studies demonstrated that caffeine can be ergogenic during ST, with improvements averaging 11 % (95% GI, 7.4% -14.5%) above placebo treatment. In addition, the caffeine studies contributed to a meta-analysis of the effects of caffeine on test outcome that resulted in an effect size greater than zero, with 95% confidence intervals not crossing zero. The studies have examined potential physiological and metabolic mechanisms of action that may help explain caffeine's impact on ST. These suggest that there is some evidence that caffeine both stimulates anaerobic glycolysis and reduces electrolyte disturbance during ST. Finally this work has demonstrated for the first time that the perceptual response during constant-rate ST, as measured by RPE, is blunted following caffeine ingestion. It is concluded that caffeine is ergogenic during ST, and that while the exact mechanism(s) of action remains unknown, one consistent test outcome is a reduction in RPE during constant-rate ST.
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Hough, John. « Intensified training and salivary hormone response to high-intensity exercise ». Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/9887.
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Cortisol (C) and testosterone (T) are commonly suggested as markers of overreaching and the unexplained underperformance syndrome (UPS) as taken together they highlight the body s state of stress by indicating the body s catabolic/anabolic balance. Research in this area has focused on the resting concentrations of these hormones and provided inconsistent findings with increases, decreases and no changes reported when individuals are compared in an overreached state with a normally trained state. Little attention has been given to the exercise-induced responses of these hormones and whether this could be a reliable marker of overreaching/UPS. Overreaching will only occur with an intensification of training so the aims of the studies in this thesis were to determine the effects of intensified training on the exercise-induced responses of salivary and plasma C and T concentrations. Study 1 (Chapter 4) determined the salivary and plasma C, T and plasma adrenocorticotrophic hormone (ACTH) concentration responses in physically fit, healthy males to a double-bout cycle to fatigue protocol devised by Meeusen et al. (2004). They reported blunted exercise-induced hormonal responses to this protocol when well-trained cyclists were overreached compared with a normally trained state. Study 1 concluded that the exercise-induced responses of the salivary and plasma C and plasma ACTH concentrations were unaffected by a 4-day intensified training period. Blunted exercise-induced salivary and plasma T concentrations were found post-training but were due to blunted resting, basal T concentrations post-training compared with pre-training. The double-bout cycle to fatigue protocol did not elicit large C or T responses and so was not ideally suited to highlight alterations in the exercise-induced hormone responses. A high-intensity, short-duration exercise protocol (called the 55/80 bout) was established in Chapter 5 which induced robust elevations of salivary and plasma C and salivary T concentrations when in a normal trained state. Such a protocol could highlight any adaptations in the exercise-induced responses of C and T concentrations. It was also concluded that salivary and plasma C concentrations positively correlated if the peak post-exercise values were compared but not so with the salivary and plasma T concentrations. Chapter 6 and Chapter 7 concluded that blunted responses of the salivary C (Chapter 6) and T (Chapter 6 and Chapter 7) concentrations to a 55/80 bout occurred after an intensified endurance training period (~10 days). These results indicate that the 55/80 bout could be a useful detection tool of exercise-induced alterations in salivary C and T concentrations caused by an elevation of training loads in both recreationally active and elite athlete populations. The reproducibility of the salivary hormonal responses to the 55/80 bout needed to be established before it could be concluded that this was indeed a useful tool. Chapter 8 concluded that the responses of both salivary C and T concentrations to the 55/80 bout were reasonably reproducible with intra-individual variations of 12% (salivary C) and 7% (salivary T) reported. Chapter 8 also concluded that a familiarisation 55/80 bout was needed to reduce the variation in the responses of both salivary C and T concentrations. The final experimental chapter examined the response of salivary C and T over a competitive season in elite male triathletes and concluded that the 55/80 bout was unable to highlight any adaptations in the salivary C and T exercise-induced responses. This was suggested to be due to the low numbers of participants in this study and the ability of the triathletes to cope well with the elevations in training loads over the season. In conclusion, the studies in this thesis suggest that the exercise-induced responses of salivary C and T do alter due to an intensification of training loads. This alteration presents as a blunting of the exercise-induced responses of these salivary hormones. The 55/80 cycle bout can highlight this blunted response in both recreationally active and elite athlete male populations and therefore may be a useful tool to examine exercise-induced adaptations in salivary C and T concentrations caused by periods of intensified training.
Livres sur le sujet "High-Intensity exercises"
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Lewis-McCormick, Irene. The HIIT advantage : High-intensity workouts for women. Champaign, IL : Human Kinetics, 2016.
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Spira, Michael. The 12-minute weight-loss plan : High intensity interval training + smart eating = fast, easy weight loss. London : Piatkus, 2015.
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Darden, Ellington. High-intensity home training. New York : Perigee Books, 1993.
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Cerqua, Pete. The high intensity fitness revolution for men. New York : Skyhorse Pub., 2012.
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Donald, Macleod, dir. Intermittent high intensity exercise : Preparation, stresses, and damage limitation. London : E & F N Spon, 1993.
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kelly, Noleen. The effect of Creatine supplementation on high intensity exercise. [s.l : The Author], 1997.
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Mannion, Anne Frances. Limiting factors to high intensity exercise : The role of intramuscular pH and skeletal muscle buffering. Salford : University of Salford, 1990.
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Trink, Dan. High-Intensity 300. Human Kinetics, 2015. http://dx.doi.org/10.5040/9781718225282.
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If you’re tired of the same old workouts and less-than-spectacular results, you’ll be excited to know you’ve found the remedy to your situation. In fact, you’ve found 300 of them! High-Intensity 300 is the ultimate workout guide. Featuring 300 of the most effective and challenging workouts, it’s packed with programs that push you to your limit and maximize results. Each workout includes detailed instruction, photos, and training tips as well as variations for types of equipment and difficulty level. Best of all, each workout is designed to be completed in 30 minutes. Challenge yourself with a different workout each day, or take a more focused approach and target goals, such as increasing muscle mass, shedding fat, or maximizing performance. The choice is yours. And just when you think you’ve done it all, High-Intensity 300 finishes with 40 of the toughest workouts. Pulling together the most intense movements, exercises, and sequences throughout the book, this series of 30-minute challenges is for serious warriors and extreme athletes only. Whether you are looking to ramp up the intensity of your workout, add variety and excitement to a ho-hum routine, or push yourself to the extremes of strength, fitness, or performance, High-Intensity 300 has it all—and much, much more.
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Broussal-Derval, Aurelien, et Stephane Ganneau. The Modern Art of High Intensity Training. Human Kinetics, 2017. http://dx.doi.org/10.5040/9781718225701.
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A book on high intensity training should deliver an impact equal to the training itself. Lucky for you, this one does. The Modern Art of High Intensity Training is sport and strength, movement and passion. It is a guide like no other. From the stunning artwork to the 127 workouts, it’s designed to be a difference maker. Whether you use this resource as a supplement to an existing training program, or replace a program that has become tired and stale, you’ll view and use this book time and time again. See high intensity training in an entirely new light. You’ll find 40 exercises, each detailed and depicted with art, photos, and modifications; 127 workouts and circuits to mix things up; warm-up, safety, and injury prevention recommendations; and—if you’re up to the challenge—an original 15-week program. The Modern Art of High Intensity Training has everything you need and want in a workout program. Change, variety, inspiration, motivation, challenge, and results—it’s rendered and written and delivered to you on every page. So now is the time. Make an impact.
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McCall, Pete. Ageless Intensity. Human Kinetics, 2022. http://dx.doi.org/10.5040/9781718224957.
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High-intensity training has no age restriction, so why slow down? You don’t have to. However, there is a better way to train … one that reduces stress on your body, decreases risk of injury, and maximizes the results you’re looking for. Ageless Intensity is a straightforward science-based guide on how to structure and implement high-intensity workouts to increase strength and power, add lean muscle mass, improve mobility, burn fat, reduce heart rate, and, ultimately, reduce the biological effects of time. Inside, you will discover not only the impact aging has on your body but also how high-intensity exercise actually slows that process. You’ll learn the importance of adding challenging strength and mobility exercises to your routine as well as how to monitor and adjust recovery between workouts. You’ll even find predesigned workouts that can be used as is or be customized to increase the intensity and push your body to its limits. So, if you’re not ready to slow down, Ageless Intensity will show you how to keep going strong.
Chapitres de livres sur le sujet "High-Intensity exercises"
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Sainburg, Robert L., Andrew L. Clark, George E. Billman, Zachary J. Schlader, Toby Mündel, Kevin Milne, Earl G. Noble et al. « High-Intensity Exercise ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 409. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_4269.
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Draper, Nick, Craig A. Williams et Helen Marshall. « High-intensity aerobic endurance sports ». Dans Exercise Physiology, 311–61. 2e éd. London : Routledge, 2024. http://dx.doi.org/10.4324/9781003109280-12.
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Sainburg, Robert L., Andrew L. Clark, George E. Billman, Zachary J. Schlader, Toby Mündel, Kevin Milne, Earl G. Noble et al. « High-Intensity Training ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 410. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_4271.
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Sainburg, Robert L., Andrew L. Clark, George E. Billman, Zachary J. Schlader, Toby Mündel, Kevin Milne, Earl G. Noble et al. « High-Intensity Aerobic Interval Training ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 409. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_2490.
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Sainburg, Robert L., Andrew L. Clark, George E. Billman, Zachary J. Schlader, Toby Mündel, Kevin Milne, Earl G. Noble et al. « High-Intensity Submaximal Interval Training ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 409. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_4270.
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Sainburg, Robert L., Andrew L. Clark, George E. Billman, Zachary J. Schlader, Toby Mündel, Kevin Milne, Earl G. Noble et al. « High-Intensity Training Young Athletes ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 410. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_4272.
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Harris, Roger C., et Craig Sale. « Beta-Alanine Supplementation in High-Intensity Exercise ». Dans Acute Topics in Sport Nutrition, 1–17. Basel : S. KARGER AG, 2012. http://dx.doi.org/10.1159/000342372.
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Cathcart, Andrew J., Anthony P. Turner, Christopher Butterworth, Matthew Parker, John Wilson et Susan A. Ward. « Ventilatory Control during Intermittent High-Intensity Exercise in Humans ». Dans Integration in Respiratory Control, 203–8. New York, NY : Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-73693-8_35.
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Harris, Roger C., et Trent Stellingwerff. « Effect of �-Alanine Supplementation on High-Intensity Exercise Performance ». Dans Limits of Human Endurance, 61–71. Basel : S. KARGER AG, 2013. http://dx.doi.org/10.1159/000350258.
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Franklin, Barry A. « Extreme Exercise and High Intensity Interval Training in Cardiac Rehabilitation ». Dans Lifestyle Medicine, 787–99. Third edition. | Boca Raton : Taylor & Francis, 2019. : CRC Press, 2019. http://dx.doi.org/10.1201/9781315201108-67.
Texte intégralActes de conférences sur le sujet "High-Intensity exercises"
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Sjölinder, Marie, Olov Ståhl, Elisabeth Rydwik et Simon Torikka. « Design of an mHealth application for optimizing preoperative physical function ». Dans 10th International Conference on Human Interaction and Emerging Technologies (IHIET 2023). AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1004083.
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Limited physical reserve capacity in older people might be a risk factor for further functional decline and complications after surgery (Griffiths et al., 2014). A shift in cancer care in Sweden toward standardized and enhanced care processes, has led to that time between diagnosis and surgery has been shortened. Therefore, it has become important to focus on the effects of a short exercise program with high intensity and frequency. Recent qualitative studies have shown that patients with cancer need personalized support to perform preoperative exercises and that they prefer to do it at home or close to home (Beck et al., 2020). It is also important with a design that is tailored to the patient's needs, and goal setting, performance feedback, self-monitoring and reminders are all known facilitators for motivation and adherence to physical activity interventions (Michie et al., 2011).Development of the application: In a previous study, physiotherapists visited patients in their homes and supported them in conduction physical exercises during their preoperative phase. In the next step we developed a digital application consisting of, among other things, exercises, support and motivational features.The detailed features of the application were defined together with users during a co-creation process in workshops. Two workshops were conducted together with five patients. During the first workshop the participants discussed experiences from the previous intervention, factors they deemed relevant for adhering to the protocol and motivational aspects. During the second workshop the participants gave input on features and functionalities. One workshop was held together with five physiotherapists. In these workshops, experiences with the previous intervention, support needed for the patients and functionalities and interface for remote support were discussed. Further meetings and workshops were also conducted iteratively during the development phase.Content and interaction with the application: The specific aim of the application is to support the creation and tailoring of exercise programs with high intensity and frequency. The application consists of two parts, one used by the physiotherapists and one used by the patients. Physiotherapists are able to create individual exercise programs by selecting exercises from an exercise library, and then choosing settings for the exercises (e.g., numbers of sets and repetitions) based on a patient's needs and abilities. New types of exercises can be created by the physiotherapist and added to the library. The application allows the physiotherapist to monitor the patient's progress (based on data reported by the patient) and the exercise program can be adjusted if needed. The application also provides support for conveying a sense of presence and encouragement to the patient by allowing physiotherapist to write comments and to give the patient ”likes” on reported exercises, which will then be visible in the patient's part.The patient part of the application allows patients to see which exercises they are supposed to do each day, and to report to which extent the exercises have been completed. During reporting, the application will ask the patient to input data about how and when the exercise was performed (e.g., number of sets and reps, time of day, etc), and how the patient experienced the effort. All reported data are automatically gathered in a training diary section of the application, giving the patient access to the whole training history for later inspection. Any comments or likes sent by the physiotherapist also appears in the diary. The application includes different features for supporting and increasing the motivation to conduct the exercises. For example, rewards in the form of medals are given based on how well the patient follows the exercise program. Also, information about why this kind of training is important for improving the recovery after the surgery is provided in a theory section, to further strengthen the motivation to follow the exercise program. In the workshops patients had expressed the importance of this kind of information since it will be a reminder of how they can contribute to the best outcome as possible.ReferencesGriffiths R et al. Peri-operative care of the elderly 2014 Association of Anaesthetists of Great Britain and Ireland. Anaesthesia 2014;69:81-98. Beck A et al. Investigating the experiences, thoughts, and feelings underlying and influencing prehabilitation among cancer patients: a qualitative perspective on the what, when, where, who, and why. Disabil Rehabil. 2020 May 13:1-8.Michie S et al. A refined taxonomy of behaviour change techniques to help people change their physical activity and healthy eating behaviours: the CALO-RE taxonomy. Psychol Health 2011;26:1479-98.
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Deak, Gratielaflavia, et Iuliana Borosbalint. « A 4-WEEK PILOT STUDY INVESTIGATING THE EFFECTS OF HIGH INTENSITY INTERVAL TRAINING ON PULMONARY FUNCTION AND AEROBIC CAPACITY ». Dans eLSE 2017. Carol I National Defence University Publishing House, 2017. http://dx.doi.org/10.12753/2066-026x-17-193.
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Suited for both elite athletes and untrained individuals, high intensity interval training (HIIT) is an increasingly popular cardio respiratory training technique that involves repeated bouts of high intensity exercise alternated with short periods of rest. This study was aimed at investigating the effects of a 4-week HIIT program on pulmonary function and aerobic capacity in recreationally trained individuals. Participants were 11 students (8 males and 3 females), aged between 21 and 25 years. They were randomly assigned to two groups: a Control group (5 subjects) and an Experimental group (6 subjects). Participants from the Experimental group trained 3 times per week, for a period of 4 weeks, performing HIIT with their own bodyweight. The exercises chosen for the training sessions were Burpees, squat jumps, push-ups, lunge jumps, mountain climbers, tuck jumps, planks, etc. Prior and post training protocol, all subjects effectuated pulmonary function tests with the Spirobank II® spirometer, manufactured by MIR (Medical International Research), Italy. The software used to process the acquired data was WinspiroPRO PC Software®. Anthropometric measurements and VO2max assessments were also carried out. VO2max was estimated using an online calculator after performing the Three Minute Step Test.After 4 weeks of bodyweight HIIT, the Experimental group showed improvements in VO2max, forced vital capacity (FVC) and forced expiratory volume in one second (FEV1/VC). HIIT has proved effective in enhancing physical performance. Further research is needed to identify the effects of this particular training method on the cardiorespiratory function of individuals with different levels of physical training.
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Urbančič, Špela, et Renata Vauhnik. « Physiotherapy Approach for Treating Lateral Epicondilalgia ». Dans Socratic lectures 10. University of Lubljana Press, 2024. http://dx.doi.org/10.55295/psl.2024.i5.
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Abstract: Lateral epicondylitis, a tendinopathy affecting forearm extensor muscles, results from overuse and commonly manifests as pain over the lateral humeral epicondyle. The ex-tensor carpi radialis brevis (ECRB) is implicated, particularly during forceful gripping. The condition is prevalent in the 35-45 age group and it affects 1-3% of the population, with symptoms lasting two years and reoccurring after asymptomatic periods. Consid-ering the economic impact of lateral epicondylalgia-related sick leave, therapeutic fo-cus must emphasize long-term as well as short-term efficacy. Treatment approaches include drugs, rest, physiotherapy and surgery. Platelet-rich plasma proves highly ef-fective, reducing pain and work absenteeism. Severe cases may require surgical ap-proach, with studies questioning the benefits of surgery over a placebo. Pain manage-ment involves shockwave therapy, ultrasound, friction massage, eccentric exercises, stretching, and orthoses. Shockwave therapy stands out for its rapid pain relief and long-term efficacy. The combination of exercises and kinesiotaping is effective, while high-intensity laser therapy has limited evidence. Functionality improves with manual therapy, stretching, and strengthening exercises. Orthoses may negatively impact hand function. Grip strength correlates closely with functionality, with therapeutic exercise and manual therapy showing significant long-term results. Keywords: Lateral epicondylalgia, tendinopathy, rehabilitation, physiotherapy ap-proach
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Johnson, Wayne M., Thomas Murphy, Derrick Brown, Bryan Riemann, Joshua Suttle et Manuel O’Canas. « Design and Evaluation of a Touch Activated Glove System for Upper Extremity Rehabilitation Studies ». Dans ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52240.
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Upper extremity plyometric exercises show potential for shoulder injury prevention and rehabilitation. Plyometric exercises are physical activities in which muscles are extended and contracted in a rapid and repetitive manner. An example of a plyometric shoulder exercise consists of repeatedly throwing and catching a medicine ball into a trampoline system as quickly as possible. However, proper characterization of the efficacy of the exercise requires knowledge of ball contact events; specifically, the ball contact and release times. The objective of this work was to design and test a low cost touch activated glove system that could be used to determine contact events during upper extremity plyometric exercises. The sensor design consists of a neoprene frame over which layers of Velostat® film and copper fabric are arranged to create a pressure sensitive on-off switch. Individual sensors were constructed for digits II through IV and two for the upper palm area. Each sensor was attached to a nylon glove and wired to a terminal block, circuit board and battery pack situated on the back of the hand. A second nylon glove was used to cover and protect the sensors. Contact versus no contact sensor resistance was experimentally determined by measuring the sensors’ resistance when pressure was applied to various regions of the sensor contact area. This was used to anticipate the analogous contact verses no contact sensor voltage. The response time of the sensors plus measurement circuit was also determined by measuring the rise and fall time of the glove system due to contact events. Activated sensors produce a high voltage (> 3.0V) in the measurement circuit and indicate contact. The touch activated glove system was successfully used in a research study to quantify the intensity of overhand plyometric throwing and in another study to determine the biomechanical variables for the single arm seated shot put upper extremity functional performance test.
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Zuschnegg, Julia, Sandra Schuessler, Lucas Paletta, Silvia Russegger, Maria Fellner, Karin Ploder, Bernhard Strobl et al. « Usability Evaluation after a 6-month Tablet-based Dementia Training Program by People with Alzheimer’s Disease, Relatives, and Dementia Trainers ». Dans 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001844.
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Non-pharmacological interventions, like tablet-based cognitive trainings, already present an important alternative treatment of dementia. For tablet-based cognitive trainings to be effective, regular practice seems to be required, highlighting the need for such trainings to be applicable not only in well-prepared laboratory settings, but also for continuous use at home. In order to raise the acceptance as well as the user-friendliness of such trainings to consequently increase training intensity, usability research is essential. Therefore, the aim of this study was to explore the experiences of people with Alzheimer’s disease (PwAD), relatives, and dementia trainers regarding the usability of a tablet-based dementia training practiced in the home setting.A qualitative study was performed within the ongoing randomized controlled trial of the project multimodAAL. In total 15 individual interviews (each 5 per target group) were conducted with people with mild AD, their relatives and dementia trainers, who were already assigned to the intervention group for at least 6 months, practicing a dementia training program, including physical and cognitive exercises on a tablet-PC at home. The interviews lasted 91.9 minutes on average. A qualitative content analysis was performed to analyze the data.Participants were predominantly female (73.3 %). PwAD and relatives stated that they had no previous experience with this type of computer-based cognitive training and had experienced the training as positive and enriching. Some relatives saw the joint performance as a meaningful activity with their loved ones. Participants confirmed that the different types of physical exercises (e.g., coordination, strength), presented in a video format were well feasible for PwAD. In this regard, some PwAD reported feeling a bit unchallenged. Relatives and dementia trainers recommended for the exercise videos to be more motivating and fun (e.g., direct motivational address by the gymnast in the video like in a tv show, colorful sportswear). Regarding cognitive exercises, participants appreciated the variety (e.g., quiz, puzzle, calculating) as well as the sequence of the different exercises within a training session. Dementia trainers and relatives perceived that exercises related to topics about past/biography (e.g., previous occupation, hobbies) and to religious/seasonal traditions (e.g., Christmas) were particularly appreciated among PwAD. In view of beneficial factors to complete a training session with its physical and cognitive exercises successfully, relatives and dementia trainers underlined that PwAD needed support in terms of (technical) guidance, motivation/feedback/praise, as well as hints/tips/thought-provoking impulses. Dementia trainers and relatives suggested that this could be achieved by a supporting person (e.g., dementia trainer) or an expansion of the program by written and verbal support (e.g., hint button, voice assistant). Furthermore, participants emphasized the need of a tablet pen for comfortable handling, as well as a high sensitivity of the tablet-PC's touch screen.The results show that the already applied tablet-based dementia training is well received and accepted by participants. However, there is still potential for enhancement regarding motivational and feedback strategies as well as user-friendliness by the addition of a comprehensive application for guiding through the physical and cognitive exercises to enable more independent practice sessions.
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Francisco, Alice Aparecida Rodrigues Ferreira, et Pedro Lopez. « EXERCISE AS AN ADJUVANT THERAPY FOR FATIGUE AND CARDIORESPIRATORY FITNESS IN BREAST CANCER PATIENTS : A REVIEW OF CURRENT EVIDENCE ». Dans XXIV Congresso Brasileiro de Mastologia. Mastology, 2022. http://dx.doi.org/10.29289/259453942022v32s1032.
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Introduction: During primary breast cancer (BC) treatment, both systemic and local therapies are used to eliminate tumoral cells and reduce the risk of recurrence or disease progression. However, despite the efficacy and success of these treatments, most patients have their quality of life affected by some treatment-related side effects. Among them, fatigue and reductions in cardiorespiratory fitness are commonly observed in response to treatment toxicities during and even following primary treatment. To date, exercise has been considered an effective intervention to counteract these side effects. In the past few years, guidelines from the American Cancer Society, American College of Sports Medicine, and Exercise and Sport Science Australia were published highlighting the importance of being physically active before or after a cancer diagnosis. Recently, the Brazilian Clinical Oncology Society also started a new guideline in exercise and oncology. However, even with numerous studies demonstrating that exercise is effective, the relationship between its prescription variables and effects on these outcomes is unclear. Consequently, it is of great interest to understand the effects of different exercise modalities (e.g., resistance training, aerobic exercise or combined resistance, and aerobic exercise) and their effects on fatigue and cardiorespiratory fitness. Objective: The aim of this study was to describe the effects and moderators of exercise on fatigue and cardiorespiratory fitness in women with BC. Methods: This is a narrative literature review concerning the exercise effects and moderators of exercise response on fatigue and cardiorespiratory fitness in women with BC. The search was undertaken in PubMed using the following terms: “cancer” AND “exercise” AND (“fatigue” OR “cardiorespiratory fitness”) in November 2021. Given the specificity of the topic and outcomes of interest, we selected seven systematic reviews with meta-analysis to describe the exercise effects and moderators of exercise response on fatigue and cardiorespiratory fitness in BC patients. Results: In summary, the design of supervised exercise programs could benefit women with BC. In addition, exercise could result in greater effects in patients presenting higher levels of fatigue when compared to those who do not present. Some examples of supervised exercise programs are in studies from the Supervised Trial of Aerobic Versus Resistance Training (START), Combined Aerobic and Resistance Exercise (CARE), and Optimal Training Women with BC trials (OptiTrain). These studies prescribed resistance training, aerobic exercise, and combined resistance and aerobic exercise, 2–3 exercise sessions per week, 1–3 sets of 8–12 repetitions at 60–70% of one-repetition maximum (1RM) per resistance exercise, and 20–30 min of continuous or high-intensity interval aerobic exercise at 13–15 of the rated perceived exertion (RPE) scale. Regarding the exercise program prescription, supervised, high-intensity, or nonlinear schedule aerobic exercises are also associated with greater effects on cardiorespiratory fitness. The fact that supervised exercise results in greater benefits in cardiorespiratory fitness compared to unsupervised programs (supervised exercise, ES=0.34, 95%CI 0.28–0.40; unsupervised exercise, ES=0.19, 95%CI 0.07–0.32) is an important information. Conclusion: Sufficient evidence indicates that exercise promotes significant effects on fatigue and cardiorespiratory fitness in women with BC. In addition, specific subgroups of patients based on age and baseline levels appear to respond more favorably than others. Regarding contraindications, the exercise prescription should occur accordingly to and with the clearance of the oncologist and the medical team, respecting patients’ individualities, the feasible period for exercise, symptoms, and treatment course.
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Sivakumar, Saaveethya, Yong Jin Kun et Alpha Agape Gopalai. « High-Intensity Interval Training Exercise Recognition using Smartwatch ». Dans 2020 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES). IEEE, 2021. http://dx.doi.org/10.1109/iecbes48179.2021.9398735.
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Francisco, Alice Aparecida Rodrigues Ferreira, Jader Brito Ramos da Silva, Lais Moriyama Pereira Lima, Karen W. Wonders et Otavio Augusto Soares Machado. « IMPACT OF THE COVID-19 PANDEMIC ON LIFESTYLE AND ANXIETY LEVELS IN WOMEN WITH BREAST CANCER ». Dans Scientifc papers of XXIII Brazilian Breast Congress - 2021. Mastology, 2021. http://dx.doi.org/10.29289/259453942021v31s1093.
Texte intégralRésumé :
Introduction: The COVID-19 pandemic, which led to an attempt to reduce infection rates, also led to radical changes in our daily lives and forced the world population to isolation and distance. As result, our lifestyle habits and mood have also changed. Whether due to the fear of performing physical activity during treatment, or the lack of information regarding the benefits associated with it, the number of sedentary cancer patients remains high. With the pandemic, the challenge of introducing and maintaining the practice of physical activity during cancer treatment as a “standard of care” became even greater. Objectives: To assess changes in physical activity levels, time spent sitting and self-reported levels of anxiety in women diagnosed with breast cancer, in the face of the COVID19 pandemic. Methods: An online questionnaire was applied to cancer patients, evaluating 57 women diagnosed with breast cancer, aged between 20 and 75 years. The questionnaire was sent via text message and on spontaneous demand on social networks. Results: As main results, we found out that 46 women (80.7%) were practicing regular physical exercises before the pandemic, while 40 (70.1%) of them managed to maintain this habit. The averages of weekly time (minutes) spent in physical exercise, subjective effort intensity, time (hours/day) spent watching TV, and anxiety level before and during the pandemic were 90.5 vs. 69.4 (p <0.003) ; 2.3 vs. 1.9; 2.3 vs. 3.2 (p<0.007); 2.6 vs. 3.3 (p<0.003). Regarding the percentage analyses, it was noted that even in the pre-pandemic period, only 24.5% of the sample performed more than 150 minutes of weekly physical activity, as recommended by the World Health Organization (WHO). As for the level of anxiety, when comparing the number of women who rated themselves between very anxious and exaggeratedly anxious, an increase of 110.4% was noted during the pandemic. Conclusions: Even though exercise protocols for cancer patients are well established, we observed in the present study that most patients do not meet the minimum necessary WHO recommendations. Furthermore, the increase in hours spent watching television may be a factor that contributed to increase the level of anxiety, decreasing the quality of life of these participants.
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Shibata, Keisuke, Kazuki Takizawa et Masao Mizuno. « MUSCULAR STRENGTH AFTER 12 SETS OF HIGH INTENSITY LEG EXTENSION EXERCISE RECOVERS WITHIN 2 DAYS ». Dans Movement, Health and Exercise 2014 Conference. Universiti Malaysia Pahang, 2014. http://dx.doi.org/10.15282/mohe.2014.hps.040.
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Cerceloiu, Mădălin Lucian, et Valentina Iuliana Diaconu. « Consumer Attitude in the Context of Private Education Services ». Dans Fifth International Scientific Conference ITEMA Recent Advances in Information Technology, Tourism, Economics, Management and Agriculture. Association of Economists and Managers of the Balkans, Belgrade, Serbia, 2021. http://dx.doi.org/10.31410/itema.2021.139.
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The paper presents an analysis of consumer attitudes regarding private pre-university education services and provides a view of consumer behavior with the use of the three components of attitude: affective component, cognitive component and conative component. The objective of this analysis was to study and identify visible and less visible attitudes regarding the use of private education services. Attitude is one of the essential variables of behavior that can influence the buyer’s decision when they want to purchase a product or a service. The qualitative research that has been conducted in order to investigate the subject regarding attitude has revealed that attitude is closely linked to financial elements, distribution, placement, advertising or social pressure. Children’s education is a very important subject for both parents and future parents and thus a series of particularities can be extracted from the relations that form between attitude and perception, attitude and learning, attitude and motivation and attitude and effective behavior. Attitude represents a state of mental promptitude, organized through experience, that exercises a dynamic influence on the response of the individual. Attitude can have a positive direction or a negative direction; it can have low or high intensity and can be of many types.
Rapports d'organisations sur le sujet "High-Intensity exercises"
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Guerreiro, Hugo, Rute Borrego et Lino Mendes. β-alanine supplementation for athletic performance in female athletes : a protocol for a systematic review of randomized control trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, juin 2022. http://dx.doi.org/10.37766/inplasy2022.6.0041.
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Review question / Objective: The Effect of β-alanine Supplementation on Athletic Performance in Female Athletes: a Systematic Review of Randomized Control Trials. Condition being studied: β-alanine is an endogenously produced non-proteinogenic amino acid that can also be obtained through the consumption of foods such as meat. The ergogenic effect of β-alanine supplementation is linked to the levels of carnosine (a cytoplasmatic dipeptide to which β-alanine is a precursor). It has become one of the most common sports nutrition ergogenic aids, with typical doses at about 4 to 6 g per day that are ideal to elevate muscle carnosine concentrations by up 80%. This elevation happens regardless of high or low baseline levels (common in vegetarians, women and in older subjects) and chronic supplementation (and the associated increase of muscle carnosine levels) is known to be of particular interest in improving high-intensity exercise performance by enhancing intracellular H+ buffering, reducing muscle acidosis. It has been mostly proposed as beneficial in exercises between 60 seconds and 4 minutes, but some positive effects have been noted in other sport-related outcomes. The fact that women tend to have less muscle carnosine content then man, in addition to other characteristics of the female athlete, highlights the importance of understanding if the outcomes and magnitude of the effects already found and stablished in male athletes are, in fact, equivalent in the female athlete.
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Molotylnikova, Vira. MODERN TYPES OF BODY RELAXATION METHODS AFTER INTENSE PHYSICAL EXERTION. Intellectual Archive, novembre 2022. http://dx.doi.org/10.32370/iaj.2748.
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The article presents varieties and variants of relaxation techniques advisable to use after intense physical exertion. The concept of "relaxation" and understanding of its role in physical education to maintain health and harmonious development of youth are considered. Considering the fact that one of the main trends in sports remains the increase in the intensity of training and the need to improve the results of competitions, the problem of restoring the athlete's performance capacity after physical exertion is extremely relevant today. Understanding the causes of fatigue and the physiological mechanisms of recovery, control over the relevant processes, the rational use of modern methods of body relaxation and means of recovery are important for assessing the impact of physical stress on the body, the effectiveness of training programs, identifying overtraining, determining the optimal rest time after physical exercises, and therefore, are necessary to improve the athlete's training and achieving high results.
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Wang, Cuihua, Gang Liu, Jun Xing, Yahui Wang, Baoli Zhao et Mingqi Zheng. The effects of high-intensity interval training vs. moderate-intensity continuous training on exercise tolerance and prognosis in Heart Failure and Coronary Artery Disease Cardiac : a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, août 2020. http://dx.doi.org/10.37766/inplasy2020.8.0112.
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Li, Siyi, Xiankun Chen et Wei Jiang. The Effect of High-Intensity Interval Training on Exercise Capacity in Patients with Coronary Artery Disease : a Systematic Review and Meta-Analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, avril 2022. http://dx.doi.org/10.37766/inplasy2022.4.0036.
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