Relevant bibliographies by topics / Maximal oxygen consumption (VO2max)

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Academic literature on the topic 'Maximal oxygen consumption (VO2max)'

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Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Maximal oxygen consumption (VO2max)"

1

Lotgering, F. K., P. C. Struijk, M. B. van Doorn, and H. C. Wallenburg. "Errors in predicting maximal oxygen consumption in pregnant women." Journal of Applied Physiology 72, no. 2 (February 1, 1992): 562–67. http://dx.doi.org/10.1152/jappl.1992.72.2.562.

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This study was designed to determine the accuracy of estimated values of maximal heart rate (HRmax) and oxygen consumption (VO2) during pregnancy. We measured HR and maximal VO2 (VO2max) at rest and during cycle (CE) and treadmill exercise (TE) tests with rapidly increasing exercise intensities during gestation and after delivery. Pregnancy was found to affect the linear relationship of HR and %VO2max so that the intercept increases with advancing gestation and the slope decreases. Estimated maximal HR (HRmax, est), 220 - age (yr) x beats/min, overestimated measured HRmax by 8% (CE) and 5% (TE). For VO2max estimated by Astrand's nomogram (VO2max, est1) and by linear extrapolation of submaximal values of HR and VO2 to HRmax, est (VO2max, est2), individual errors were large (SD 17–28%). Mean VO2max, est1 overestimated measured VO2max by 20% during CE but not during TE (-2%) and elicited the erroneous impression that VO2max decreases during CE in pregnancy. Mean VO2max, est2 values were not significantly different from measured VO2max values. This apparent accuracy resulted from two opposing errors: 1) HRmax, est overestimated HRmax, and 2) above 70% VO2max the slope of the HR-%VO2max relationship was significantly reduced. Therefore neither method to estimate VO2max can replace the measurement of VO2max.
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Garland, T., and A. F. Bennett. "Quantitative genetics of maximal oxygen consumption in a garter snake." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 259, no. 5 (November 1, 1990): R986—R992. http://dx.doi.org/10.1152/ajpregu.1990.259.5.r986.

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Broad-sense heritabilities and genetic correlations of maximal oxygen consumption (VO2max), blood hemoglobin levels, and ventricle mass were estimated in a natural population of snakes. Traits were measured for six or fewer presumed full-sibling offspring from each of 45 wild-caught gravid garter snakes (Thamnophis sirtalis). VO2max was highly reproducible between replicate trial days (r = 0.88). In an attempt to reduce maternal effects, correlations of each character with body mass, snout-vent length, age at testing, litter size, dam mass, and dam snout-vent length were removed by computing residuals from multiple-regression equations. These residuals were used in subsequent genetic analyses. Approximate coefficients of variation of residuals were 16% for VO2max, 19% for hemoglobin level, and 13% for ventricle mass. Broad-sense heritabilities were highly significant for all characters [P less than 0.0001; VO2max heritability (h2) = 0.88; hemoglobin level h2 = 0.63; ventricle mass h2 = 0.41], suggesting that they could respond genetically to selection. Phenotypic correlations (rP) among residual characters were significant only between VO2max and ventricle mass (rP = +0.27). VO2max and ventricle mass exhibited a significant (broad-sense) genetic correlation of +0.64; this might facilitate the correlated evolution of these two traits in response to natural or artificial selection. Ventricle mass and hemoglobin level showed a significant environmental correlation of +0.43. Treadmill endurance crawling time (Evolution 42: 335-350, 1988) showed a weak but significantly positive rP with VO2max (rP = +0.17).
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Jones, M. T., R. E. Rawson, and D. Robertshaw. "Determination of maximal oxygen consumption in exercising pregnant sheep." Journal of Applied Physiology 73, no. 1 (July 1, 1992): 234–39. http://dx.doi.org/10.1152/jappl.1992.73.1.234.

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Previous work with pregnant ewes has shown that acute bouts of exercise may cause changes in plasma hormone concentrations, blood flow distribution, and maternal and fetal temperatures. However, most of these studies do not quantify the chosen exercise intensity through measurement of oxygen consumption (VO2). Therefore the purpose of this study was to statistically model the VO2 response of pregnant sheep to treadmill (TM) exercise to determine the exercise intensities (% maximal VO2) of previous studies. Ewes with either single (n = 9) or twin (n = 5) fetuses were studied from 100 to 130 days of gestation. After 1–2 wk of TM habituation, maximal VO2 (VO2max) was determined by measurements of VO2 (open flow-through method) and blood lactate concentration. VO2 was measured as a function of TM incline (0, 3, 5, and 7 degree) and speed (0.8–3.4 m/s). VO2max averaged 57 +/- 7 (SD) ml.min-1.kg-1, and peak lactate concentration during exercise averaged 22 +/- 2 mmol/l. The relationship between VO2 (ml.min-1.kg-1) and incline (INC) and speed (SP) [VO2 = 0.70(INC) + 13.95(SP) + 1.07(INC x SP) - 1.18] was linear (r2 = 0.94). Our findings suggest that most previous research used exercise intensities less than 60% VO2max and indicate the need for further research that examines the effect of exercise during pregnancy at levels greater than 60% VO2max.
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Rivera, A. M., A. E. Pels, S. P. Sady, M. A. Sady, E. M. Cullinane, and P. D. Thompson. "Physiological factors associated with the lower maximal oxygen consumption of master runners." Journal of Applied Physiology 66, no. 2 (February 1, 1989): 949–54. http://dx.doi.org/10.1152/jappl.1989.66.2.949.

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We examined the hemodynamic factors associated with the lower maximal O2 consumption (VO2max) in older formerly elite distance runners. Heart rate and VO2 were measured during submaximal and maximal treadmill exercise in 11 master [66 +/- 8 (SD) yr] and 11 young (32 +/- 5 yr) male runners. Cardiac output was determined using acetylene rebreathing at 30, 50, 70, and 85% VO2max. Maximal cardiac output was estimated using submaximal stroke volume and maximal heart rate. VO2max was 36% lower in master runners (45.0 +/- 6.9 vs. 70.4 +/- 8.0 ml.kg-1.min-1, P less than or equal to 0.05), because of both a lower maximal cardiac output (18.2 +/- 3.5 vs. 25.4 +/- 1.7 l.min-1) and arteriovenous O2 difference (16.6 +/- 1.6 vs. 18.7 +/- 1.4 ml O2.100 ml blood-1, P less than or equal to 0.05). Reduced maximal heart rate (154.4 +/- 17.4 vs. 185 +/- 5.8 beats.min-1) and stroke volume (117.1 +/- 16.1 vs. 137.2 +/- 8.7 ml.beat-1) contributed to the lower cardiac output in the older athletes (P less than or equal 0.05). These data indicate that VO2max is lower in master runners because of a diminished capacity to deliver and extract O2 during exercise.
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Musch, T. I., G. C. Haidet, G. A. Ordway, J. C. Longhurst, and J. H. Mitchell. "Dynamic exercise training in foxhounds. I. Oxygen consumption and hemodynamic responses." Journal of Applied Physiology 59, no. 1 (July 1, 1985): 183–89. http://dx.doi.org/10.1152/jappl.1985.59.1.183.

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Ten foxhounds were studied during maximal and submaximal exercise on a motor-driven treadmill before and after 8–12 wk of training. Training consisted of working at 80% of maximal heart rate 1 h/day, 5 days/wk. Maximal O2 consumption (VO2max) increased 28% from 113.7 +/- 5.5 to 146.1 +/- 5.4 ml O2 X min-1 X kg-1, pre- to posttraining. This increase in VO2max was due primarily to a 27% increase in maximal cardiac output, since maximal arteriovenous O2 difference increased only 4% above pretraining values. Mean arterial pressure during maximal exercise did not change from pre- to posttraining, with the result that calculated systemic vascular resistance (SVR) decreased 20%. There were no training-induced changes in O2 consumption, cardiac output, arteriovenous O2 difference, mean arterial pressure, or SVR at any level of submaximal exercise. However, if post- and pretraining values are compared, heart rate was lower and stroke volume was greater at any level of submaximal exercise. Venous lactate concentrations during a given level of submaximal exercise were significantly lower during posttraining compared with pretraining, but venous lactate concentrations during maximal exercise did not change as a result of exercise training. These results indicate that a program of endurance training will produce a significant increase in VO2max in the foxhound. This increase in VO2max is similar to that reported previously for humans and rats but is derived primarily from central (stroke volume) changes rather than a combination of central and peripheral (O2 extraction) changes.
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Yuktasir, Bekir. "Warm-up: A case study on maximal oxygen consumption as it relates to acute stretching." Journal of Human Kinetics 19, no. 1 (January 1, 2008): 165–76. http://dx.doi.org/10.2478/v10078-008-0013-y.

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Warm-up: A case study on maximal oxygen consumption as it relates to acute stretchingThe aim of this study was to determine the acute effects of static and Proprioceptive Neuromuscular Facilitation (PNF) stretches on maximal oxygen consumption (VO2max). Ten physically active men (mean ± SD, 23.80 ± 1.54 years, 70.60 ± 9.70 kg, 1.74.60 ± 5.23 m), who were healthy students volunteered to take part in the study. The participants were subjected to Static and PNF stretching exercises. After the interventions, the Bruce treadmill protocol was applied to measure VO2max values. The expired gases were collected and analyzed continuously using the Cortex Metalyzer II. Analysis of variance showed significant main effects for interventions (F(2,18)=10.74, p<.05) on VO2max. The main result of this study showed that both static and PNF stretching exercises improved VO2max values.
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Pelletier, Denis M., Guillaume Lacerte, and Eric D. B. Goulet. "Effects of Quercetin Supplementation on Endurance Performance and Maximal Oxygen Consumption: A Meta-Analysis." International Journal of Sport Nutrition and Exercise Metabolism 23, no. 1 (February 2013): 73–82. http://dx.doi.org/10.1123/ijsnem.23.1.73.

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Lately, the effect of quercetin supplementation (QS) on endurance performance (EP) and maximal oxygen consumption (VO2max) has been receiving much scientific and media attention. Therefore, a meta-analysis was performed to determine QS’s ergogenic value on these variables. Studies were located with database searches (PubMed and SPORTDiscus) and cross-referencing. Outcomes represent mean percentage changes in EP (measured via power output) and VO2max between QS and placebo. Random-effects model meta-regression, mixed-effects model analog to the ANOVA, random-effects weighted mean effect summary, and magnitudebased inferences analyses were used to delineate the effects of QS. Seven research articles (representing 288 subjects) were included, producing 4 VO2max and 10 EP effect estimates. Mean QS daily intake and duration were, respectively, 960 ± 127 mg and 26 ± 24 d for the EP outcome and 1,000 ± 0 mg and 8 ± 23 d for the VO2max outcome. EP was assessed during exercise with a mean duration of 79 ± 82 min. Overall, QS improved EP by 0.74% (95% CI: 0.10–1.39, p = .02) compared with placebo. However, only in untrained individuals (0.83% ± 0.78%, p = .02) did QS significantly improve EP (trained individuals: 0.09% ± 2.15%, p = .92). There was no relationship between QS duration and EP (p = .69). Overall, QS increased VO2max by 1.94% (95% CI: 0.30–3.59, p = .02). Magnitude-based inferences suggest that the effect of QS on EP and VO2max is likely to be trivial for both trained and untrained individuals. In conclusion, this meta-analysis indicates that QS is unlikely to prove ergogenic for aerobic-oriented exercises in trained and untrained individuals.
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Taylor, Katrina, Jeffrey Seegmiller, and Chantal A. Vella. "The Decremental Protocol as an Alternative Protocol to Measure Maximal Oxygen Consumption in Athletes." International Journal of Sports Physiology and Performance 11, no. 8 (November 2016): 1094–99. http://dx.doi.org/10.1123/ijspp.2015-0488.

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Purpose:To determine whether a decremental protocol could elicit a higher maximal oxygen consumption (VO2max) than an incremental protocol in trained participants. A secondary aim was to examine whether cardiac-output (Q) and stroke-volume (SV) responses differed between decremental and incremental protocols in this sample. Methods:Nineteen runners/triathletes were randomized to either the decremental or incremental group. All participants completed an initial incremental VO2max test on a treadmill, followed by a verification phase. The incremental group completed 2 further incremental tests. The decremental group completed a second VO2max test using the decremental protocol, based on their verification phase. The decremental group then completed a final incremental test. During each test, VO2, ventilation, and heart rate were measured, and cardiac variables were estimated with thoracic bioimpedance. Repeated-measures analysis of variance was conducted with an alpha level set at .05. Results:There were no significant main effects for group (P = .37) or interaction (P = .10) over time (P = .45). VO2max was similar between the incremental (57.29 ± 8.94 mL · kg–1 · min–1) and decremental (60.82 ± 8.49 mL · kg–1 · min–1) groups over time. Furthermore, Q and SV were similar between the incremental (Q 22.72 ± 5.85 L/min, SV 119.64 ± 33.02 mL/beat) and decremental groups (Q 20.36 ± 4.59 L/min, SV 109.03 ± 24.27 mL/beat) across all 3 trials. Conclusions:The findings suggest that the decremental protocol does not elicit higher VO2max than an incremental protocol but may be used as an alternative protocol to measure VO2max in runners and triathletes.
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Jones, J. H., K. E. Longworth, A. Lindholm, K. E. Conley, R. H. Karas, S. R. Kayar, and C. R. Taylor. "Oxygen transport during exercise in large mammals. I. Adaptive variation in oxygen demand." Journal of Applied Physiology 67, no. 2 (August 1, 1989): 862–70. http://dx.doi.org/10.1152/jappl.1989.67.2.862.

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This study investigated mechanisms used by horses and steers to increase O2 uptake and delivery (VO2) from resting to maximal rates and identified the mechanisms that enable horses to achieve higher maximal rates of O2 consumption (VO2max) than steers. VO2 and circulatory variables were measured while Standardbred trotting horses and steers (450-kg body mass) stood quietly and ran on a treadmill at speeds up to those eliciting VO2max. As VO2 increased in both species, heart rate and circulating hemoglobin (Hb) concentration increased, thereby increasing O2 delivery by the circulation, while cardiac stroke volume remained unchanged. At VO2max arterial PCO2 increased from its resting value in horses but was unchanged in steers, and arterial PO2 decreased in both species. Although the horses hypoventilated and were hypoxemic at VO2max, no significant decrease in arterial Hb saturation occurred. VO2max of the horses was 2.6 times higher than that of the steers and was associated with a 100% larger cardiac output, 100% larger stroke volume, and 40% higher Hb concentration, whereas heart rates at VO2max were identical in the two species. The higher cardiac output of the horses at VO2max resulted from a 1.2-fold higher mean arterial pressure and 1.6-fold lower peripheral tissue resistance (associated with a larger skeletal muscle capillary bed). Both the magnitude of the difference in VO2max between horses and steers and the mechanisms used to achieve it are the same as observed in smaller pairs of mammalian species with large variation in aerobic capacity.
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HOSSINI, M. Khorshidi, A. VALIZADEH, L. BOLBOLI, and A. MEAMARBASHI. "Evaluation and Development of Non-Exercise Prediction Models of Maximal Oxygen Consumption in Azerbaijan-Iranian Young Men." Asian Journal of Physical Education & Recreation 18, no. 1 (June 1, 2012): 50–57. http://dx.doi.org/10.24112/ajper.181861.

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LANGUAGE NOTE | Document text in English; abstract also in Chinese. The purpose of this study was to develop a regression equation to predict maximal oxygen consumption (VO2max) based on non-exercise (N-EX) data and to investigate the validity of these equations in healthy young men. One hundred healthy men (age: 18-26 years) were randomly separated in two equal groups (n=50). All participants, successfully completed a maximal graded exercise test (GXT) to assess VO2max (Mean = 45.56 ml × kg-1 × min-1, SD = 4.14). The N-EX data collected just before the maximal GXT including participants’ age; body mass index (BMI); perceived functional ability (PFA) to walk, jog, or run given distances; and current physical activity (PA-R) level. Methodological differences among these methods (new equation and GXT in the validation group) were analyzed with Bland-Altman (1986) method. A good correlation coefficients were observed between VO2max and body mass index (BMI) (r = -0.50), PFA (r = 0.71) and PA-R (r = 0.70) in the development group (p< 0.05). Multiple linear regression generated the following N-EX prediction equation: VO2max (ml × kg-1 × min-1) = 47.718 – (0.38516 × BMI) + (0.8541 × PA-R) + (0.2539 × PFA). When new VO2max prediction equation were applied to the validation group, high agreement were also observed between measured VO2max by GXT and predicted VO2max (mean±SD: 0.58±2.53) (p< 0.05). This study provided an N-EX regression model that yields relatively accurate results and it is a convenient way to predict VO2max in Azerbaijan–Iranian young men with a similar cardiorespiratory fitness level. Authors recommend further studies to elucidate generality of the new equation. 本研究旨在計算預測年青人最大攝氧量的公式，邀請了100位健康男士，分成兩組進行測驗。結果顯示，推算最大攝氧量的公式如下: VO2max (ml × kg-1 × min-1) = 47.718 – (0.38516 × BMI) + (0.8541 × PA-R) + (0.2539 × PFA) 。
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Dissertations / Theses on the topic "Maximal oxygen consumption (VO2max)"

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Shepherd, Brent A. "Predicting Maximal Oxygen Consumption (VO2max) Levels in Adolescents." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/2997.

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Maximal oxygen consumption (VO2max) is considered by many to be the best overall measure of an individual's cardiovascular health. Collecting the measurement, however, requires subjecting an individual to prolonged periods of intense exercise until their maximal level, the point at which their body uses no additional oxygen from the air despite increased exercise intensity, is reached. Collecting VO2max data also requires expensive equipment and great subject discomfort to get accurate results. Because of this inherent difficulty, it is often avoided despite its usefulness. In this research, we propose a set of Bayesian hierarchical models to predict VO2max levels in adolescents, ages 12 through 17, using less extreme measurements. Two models are developed separately, one that uses submaximal exercise data and one that uses physical fitness questionnaire data. The best submaximal model was found to include age, gender, BMI, heart rate, rate of perceived exertion, treadmill miles per hour, and an interaction between age and heart rate. The second model, designed for those with physical limitations, uses age, gender, BMI, and two separate questionnaire results measuring physical activity levels and functional ability levels, as well as an interaction between the physical activity level score and gender. Both models use separate model variances for males and females.
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Sundquist, Pontus. "A Test-Retest Reliability Study of Cooper's Test In Adolescents Aged 16-19 Years." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31033.

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Background: The maximum rate of oxygen consumption (V̇O2max) can be measured through numerous tests, either directly or indirectly, where direct methods are considered more accurate, whereas indirect methods are more of an estimation with various degrees of reliability. Cooper's Test is one example of an indirect method considered reliable in estimating V̇O2max, with reliability coefficients ranging between 0.897-0.960. Cooper's Test is thus a test that is often used when estimating V̇O2max. However, there is a lack of test-retest research done utilising Cooper's Test on a younger population, which is the reasoning behind this study focusing on adolescents. Aim: The aim of the study was to study the test-retest reliability of Cooper's Test, in adolescents aged 16-19 years. Methods: Twelve healthy adolescents, aged 16-19 years, attending a sports high school participated in a test-retest study (test 1 and test 2) of Cooper's Test. The tests were performed on the short sides of a synthetic grass field, with 66 metres between the two sides, were the participants were instructed to cover as much distance as possible, with high motivation and intensity, for the whole 12 minutes of the Cooper's Test. Each individual participant's data was measured, recorded and later analysed. The total distance covered was then translated into miles and compared to Cooper's original estimated maximal oxygen consumption table for an estimation of each participant's V̇O2max value in ml*kg-1*min-1 from test 1 and test 2. The data from the test-retest and its variance was then analysed by a two-way mixed model of intraclass correlation coefficient (ICC) with an absolute agreement type. Results: The analysed data from test 1 and test 2 of Cooper's Test showed the results of an ICC (95% CI) of 0.06 (-0.353 to 0.544), indicating a substantial error variance between the two separate Cooper's Tests. Conclusion: The data and analysis from this study implied that Cooper's Test was not reliable in the study population, consisting of adolescents. Possible factors influencing the result however were lack of participant motivation and the level of intensity variance during the test-retest of Cooper's Test. Further researchers and amateur and professional users should keep these factors in mind when utilising Cooper's Test to predict V̇O2max. More research is needed within this study's age population to draw any definite conclusions on the reliability of Cooper's test on adolescents.
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Ansley, Les. "Aetiology of fatigue during maximal and supramaximal exercise." Diss., University of Cape Town, 2003. http://www.oregonpdf.org.

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Thesis (Ph. D.)--University of Cape Town, 2003.
Includes bibliographical references (leaves 284-287). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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Can, Ozgider. "Four Weeks Of Respiratory Muscle Training Improves Intermittent Recovery Performance But Not Pulmonary Functions And Maximum Oxygen Consumption (vo2 Max) Capacity In Young Soccer Players." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612160/index.pdf.

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The purpose of this study was to determine the effects of 4 week respiratory muscle training (RMT) on intermittent recovery performance, pulmonary functions and maximum oxygen consumption capacity (Vo2max) of young soccer players. Eighteen young soccer player who were playing in the Turkey PAF League (league for candidate professional soccer players) from Hacettepe Sports Club with a mean age of 18.4 ±
0.8 years (ranging from 17 to 19 years) and 8.5 ±
0.7 (ranging from 7 to 9 years) years experience in soccer participated. Players&rsquo
weekly metabolic equivalent score (MET) was 120. Their maximum oxygen consumption (Vo2max) on a treadmill, pulmonary function with a spirometer, and recovery performance with a yo-yo intermittent recovery test level 2 were measured and then they were randomly assigned into two groups as either RMT (n = 9) or control (n = 9). The RMT group continued both their regular training and RMT treatment with a commercially available powerlung sport respiratory muscle trainer (Powerlung Inc., TX, and USA) for 4 weeks. The control group only continued with their regular training. After completing 4 week RMT implementation (composed of 30 sets of inhalation, two times a day, 5 days of the week), the same tests were performed in order to see the v effects of 4 week RMT treatment on selected parameters mentioned above. Findings of this study indicated that 4 week of RMT treatment significantly improved (% 39) yo-yo intermittent recovery test level 2 performances of the RMT group from pre to post test measurements when compared to subjects in the control group. However, there were no significant improvements in both RMT and control group&rsquo
s Vo2max capacity, Vital capacity (VC), Forced vital capacity (FVC), forced expiratory flow (FEV1.0) and Peak expiratory flow performances (PEF). As a conclusion, 4 week of RMT implementation improves the intermittent recovery performance of young soccer players.
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Salameh, Ahlam. "Graded Exercise Stress Testing: Treadmill Protocols Comparison Of Peak Exercise Times In Cardiac Patients." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1249833172.

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Thesis (M.S.)--University of Akron, Dept. of Sport Science and Wellness Education-Physical Education, 2009.
"August, 2009." Title from electronic thesis title page (viewed 10/7/2009) Advisor, Ronald Otterstetter; Committee members, James Rosneck, Laura Richardson; Department Chair, Victor Pinheiro; Dean of the College, Mark D. Shermis; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
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Beltrami, Fernando Gabe. "Beyond the VO2max plateau a new approach for measuring maximal oxygen uptake." Doctoral thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/2744.

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Includes abstract.
Includes bibliographical references.
Maximal oxygen consumption (VO2max) is typically defined by the presence of the "plateau phenomenon" during incremental exercise tests, in which O2 consumption levels-off in spite of increases in workload. This is thought to reflect a limitation in the capacity of the heart to pump O2 enriched blood to the exercising limbs. Some researchers however question not only the biological validity of the "plateau concept", based on mathematical and methodological issues, but whether O2 delivery to the exercising muscles indeed sets the upper limits for VO2max. This thesis aimed to address some of these controversies.
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Casanova, Francesco. "maximal oxygen consumption in systemic lupus erythematosus." Thesis, Bangor University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531058.

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Andersson, Nicklas. "SAMBAND MELLAN VO2MAX OCH/ELLER LAKTATTRÖSKEL OCH SKADOR INOM HERRHANDBOLL PÅ ELITNIVÅ." Thesis, Mälardalens högskola, Akademin för hälsa, vård och välfärd, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28550.

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Background: The need to find the underlying causes to handball injuries and to develop injury prevention programs is great. In other sports a relationship between maximal oxygen uptake (VO2 max) and injury have been seen. Purpose: To examine the relationship between VO2 max and/or lactate threshold and injuries in elite handball players. Methods: A prospective, non experimental correlational study was conducted. Thirty elite handball players and handball high school players were included. Injuries and test results for VO2-max, lactate threshold and potential confounders ( re-injury of the previous injury, re- injury of previous injury of the lower limb, age, BMI and legs and core strength for the high school players) were registered during the season 2014-2015. A bivariate analysis using Spearman's rank correlation calculation was conducted. Twenty-six respectively 11 of the players had data on VO2-max, respectively lactate threshold. Confounders that showed connection with injuries or injuries in the lower extremity were analyzed for the bivariate correlation with VO2-max and lactate threshold. Results: No significant correlation was found between VO2-max respectively lactate threshold and injury. Significant correlations were seen between previous injury respectively previous injury to the lower extremity and to get a re-injury. A significant correlation were seen between re-injury of a previous injury in the lower limb and VO2-max. Conclusions: Significant associations were seen between re- injury of earlier injury and between re-injury of the lower extremity and VO2-max and should therefore be considered in the clinical practice. Larger studies are needed to clarify the relationship between VO2-max and lactate threshold and injuries.
Bakgrund: Behovet att hitta bakomliggande orsaker till handbollsskador för att kunna utforma skadepreventiva åtgärder är stort. I andra idrotter har ett samband mellan maximal syreupptagningsförmåga (VO2-max) och skador kunnat ses. Syfte: Att undersöka samband mellan VO2-max och/eller laktattröskelvärde och skador hos elithandbollspelare. Metod: En prospektiv icke experimentell sambandsstudie utfördes. Trettio elithandbollsspelare och handbollsgymnasiespelare inkluderades. Skador och testresultat för VO2-max och laktattröskel samt tänkbara konfounders (återskada av tidigare generell skada, återskada av tidigare skada i nedre extremitet, ålder, BMI och ben och bålstyrka för gymnasiespelarna) registrerades under matchsäsongen 2014-2015. En bivariat analys med Spearmans rangkorrelationsberäkning utfördes. Tjugosex respektive 11 av spelarna hade data på VO2-max respektive laktattröskelvärde. Konfounders som visade samband med generella skador eller skador i nedre extremiteten analyserades bivariat för samband med VO2-max och laktattröskelvärde. Resultat: Inga signifikanta samband fanns mellan VO2-max respektive laktattröskelvärde och skador. Signifikanta samband fanns för tidigare generella skador respektive tidigare skada i nedre extremiteten och att återfå densamma samt mellan återskada av tidigare skada i nedre extremiteten och VO2-max. Konklusion: Signifikanta samband fanns för återskada av tidigare skada samt mellan återskada i nedre extremiteten och VO2-max vilket bör beaktas i den kliniska vardagen. Större studier behövs för att klargöra det sambandet mellan VO2-max respektive laktattröskel och skador.
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Brink-Elfegoun, Thibault. "Limitations of maximal oxygen uptake during whole-body exercise /." Stockholm : Karolinska institutet, 2007. http://diss.kib.ki.se/2007/20071116brin/.

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Merry, Kevin L. "The exercise intensity at maximal oxygen uptake (iVO2max) : methodological issues, training intensitites and applications to time spent exercising at VO2max." Thesis, St Mary's University, Twickenham, 2016. http://research.stmarys.ac.uk/1102/.

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Books on the topic "Maximal oxygen consumption (VO2max)"

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Nguyen, Phong. Assessment of maximum oxygen consumption (MVo2/ Vo2max) as a predictor of postoperative complications. Sudbury, Ont: Laurentian University, 2003.

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Lee, Stuart M. C. Variability of prediction of maximal oxygen consumption on the cycle ergometer using standard equations. Houston, Tx: Lyndon B. Johnson Space Center, 1993.

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Landle, Kelly M. A submaximal treadmill walking protocol for predicting maximal oxygen consumption. 1991.

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A submaximal treadmill walking protocol for predicting maximal oxygen consumption. 1991.

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Development of a predictive equation for maximal oxygen consumption on the steptreadmill. 1991.

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A height-adjusted step test for predicting maximal oxygen consumption in males. 1990.

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A height-adjusted step test for predicting maximal oxygen consumption in males. 1990.

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A height-adjusted step test for predicting maximal oxygen consumption in males. 1991.

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Development of a predictive equation for maximal oxygen consumption on the steptreadmill. 1992.

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A height-adjusted step test for predicting maximal oxygen consumption in males. 1991.

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Book chapters on the topic "Maximal oxygen consumption (VO2max)"

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Ferretti, Guido. "Maximal Oxygen Consumption." In Energetics of Muscular Exercise, 97–135. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-05636-4_4.

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Ferretti, Guido. "Hypoxia and Anaemia Produce Equivalent Effects on Maximal Oxygen Consumption." In The Physiology and Pathophysiology of Exercise Tolerance, 129–34. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_18.

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De Blasi, R. A., M. Cope, and M. Ferrari. "Oxygen Consumption of Human Skeletal Muscle by Near Infrared Spectroscopy during Tourniquet-Induced Ischemia in Maximal Voluntary Contraction." In Oxygen Transport to Tissue XIV, 771–77. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3428-0_94.

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Berro, Abdel-Jalil, Nadine Fayad, Antonio Pinti, Georges El Khoury, Said Ahmaidi, Hassane Zouhal, Ghassan Maalouf, and Rawad El Hage. "Maximal Oxygen Consumption and Composite Indices of Femoral Neck Strength in a Group of Young Women." In Bioinformatics and Biomedical Engineering, 369–75. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56148-6_32.

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Zhang, Xiaoshu. "Research on Results of Maximal Oxygen Consumption and Related Stimulus Parameter by Means of Traditional Moxibustion on Aconite Slice." In Advanced Technology in Teaching - Proceedings of the 2009 3rd International Conference on Teaching and Computational Science (WTCS 2009), 735–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25437-6_100.

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Wagner, Peter D. "Oxygen Transport from Air to Tissues as an Integrated System: What Limits Maximal O2 Consumption in Health and Disease?" In Structure-Function Relationships in Various Respiratory Systems, 191–217. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5596-1_11.

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"Maximal Oxygen Consumption ( $${\dot {\bf V}}{\bf O}_{\bf 2}{_{\bf max}} $$ )." In Encyclopedia of Exercise Medicine in Health and Disease, 552. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_2636.

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Thomas, Gregory S., and Myrvin H. Ellestad. "Stress Testing Protocols." In Ellestad's Stress Testing, edited by Gregory S. Thomas, L. Samuel Wann, and Myrvin H. Ellestad, 135–48. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190225483.003.0007.

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The chapter Exercise Testing Protocols compares the types of protocols available. Historically, exercise testing began with protocols eliciting a submaximal effort. With time, other protocols were developed including intermittent exercise with rest between exercise stages, a ramp protocol with gradually increasing stages, bicycle ergometry, isometric testing and mental stress testing. Given their ability to measure or estimate maximal oxygen consumption (V̇02max) and assess myocardial ischemia during and a peak exercise, maximal treadmill exercise protocols became the most popular. Most commonly used have been those of Bruce, Ellestad, Balke and Ware, Astrand, and Cornell. All successfully achieve maximal workload in a predictable manner.
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Hattendorf, Brandy. "Stress Testing in Children." In Ellestad's Stress Testing, edited by Gregory S. Thomas, L. Samuel Wann, and Myrvin H. Ellestad, 517–32. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190225483.003.0027.

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The chapter Stress Testing in Children reviews the opportunity to evaluate children with congenital and acquired cardiovascular disease. Clinical pediatric exercise testing differs from adult testing in both disease etiology as well as the characteristics of cardiovascular response. Unlike exercise testing in adults, the indications for testing in pediatrics generally are not to evaluate for ischemia. Commonly, pediatric exercise testing is used to evaluate specific signs and symptoms induced or aggravated by exercise, including identification of exercise induced arrhythmias, whereas metabolic testing can provide further patient information regarding cardiac output, maximal oxygen consumption, and lung capacity. Exercise testing can also assess the efficacy of medical or surgical treatments for individual congenital heart disease patients. Functional capacity can be used to determine patient safety for recreational, athletic, and vocational activities. Exercise modification and restrictions are necessary for some patients based on the data provided by exercise testing.
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Mueller, Stephan, Flavia Baldassarri, Julia Schönfeld, and Martin Halle. "Monitoring exercise programmes and improving cardiovascular performance." In The ESC Textbook of Sports Cardiology, edited by Antonio Pelliccia, Hein Heidbuchel, Domenico Corrado, Mats Börjesson, and Sanjay Sharma, 389–400. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198779742.003.0043.

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Cardiovascular exercise performance is associated with lower morbidity and mortality. In addition to maximal load, heart rate, and peak oxygen consumption, cardiopulmonary exercise testing and lactate analyses can provide relevant information on cardiovascular performance, diagnosis, exercise prescription, and monitoring of exercise programmes based on submaximal parameters. Using submaximal thresholds has the advantage that the prescription and effect of exercise training are directly linked to the underlying energy metabolism and therefore can reveal the specific needs of the individual. There are several methods ofr strength testing that are all based on maximum parameters and should be chosen according to the best-fit principle to the underlying strength training programme. In addition, new media such as wearables, innovative gadgets and telemonitoring have become increasingly popular in recent years and can be used to monitor the exercise training sessions, providing information for evaluation and adjustment of training if necessary.
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Conference papers on the topic "Maximal oxygen consumption (VO2max)"

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Sangkaew, Teeraphan, Kasem Pantusa, and Chawapong Metheethammawat. "A Study of the Maximum Oxygen Consumption (Vo2max) of the Students Majoring Physical Education and Health Education at Thaksin University." In The 3rd Yogyakarta International Seminar on Health, Physical Education, and Sport Science (YISHPESS 2019) in conjunction with The 2nd Conference on Interdisciplinary Approach in Sports (CoIS 2019). SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0009801006840688.

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Zarwan and Sefri Hardiansyah. "Capability Analysis of Maximal Oxygen Volume (VO2max) Football Players." In 1st International Conference of Physical Education (ICPE 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.200805.061.

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Womble, Hilary M., Richard P. Johnston, Richard M. Schwartzstein, and David H. Roberts. "The Effect Of Supplemental Oxygen On Maximal Consumption Of Oxygen And Ventilatory Parameters In Chronic Obstructive Pulmonary Disease." In American Thoracic Society 2010 International Conference, May 14-19, 2010 • New Orleans. American Thoracic Society, 2010. http://dx.doi.org/10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a3572.

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Karabiberov, Yulian, Iveta Bonova, and Valentin Panayotov. "STUDY OF A SPECIAL CONDITIONING PROGRAM AND ITS EFFECTS ON MAXIMAL OXYGEN CONSUMPTION IN FEMALE VOLLEYBALL PLAYERS." In INTERNATIONAL SCIENTIFIC CONGRESS “APPLIED SPORTS SCIENCES” AND THE BALKAN SCIENTIFIC CONGRESS “PHYSICAL EDUCATION, SPORTS, HEALTH”. National Sports Academy "Vassil Levski" (NSA Press), 2019. http://dx.doi.org/10.37393/icass2019/15.

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Sulaiman, Norasrudin, Mohammad Akmal Mohamad Nasir, Rahmat Adnan, Mastura Misdan, and Hamid Ahmad. "Criterion validity of yoyo intermittent endurance test in estimating maximal oxygen consumption among malaysian elite football players." In 2011 IEEE Colloquium on Humanities, Science and Engineering (CHUSER). IEEE, 2011. http://dx.doi.org/10.1109/chuser.2011.6163733.

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sanver, mehmet fatih, Naciye Vardar Yağlı, Melda Sağlam, Haluk Tekerlek, Ebru Çalık Kütükçü, Deniz İnal İnce, and Saadettin Kılıçkap. "Relationship of Respiratory Muscle Endurance Workload with Maximal Oxygen Consumption and Fatigue in Individuals Surviving Colorectal Cancer." In ERS International Congress 2020 abstracts. European Respiratory Society, 2020. http://dx.doi.org/10.1183/13993003.congress-2020.2971.

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Aparecida Pires Teles, Franciele, Micael Rodrigues da Silva, MARA PATRICIA TRAINA CHACON MIKAHIL, ALEX CASTRO, MARINA LÍVIA V. FERREIRA, RENATA GARBELLINI DUFT, Lucas M Silva, ARTHUR FERNANDES GASPARI, Silas Go Nunes, and CLAUDIA R CAVAGLIERI. "Biomarkers of Maximal Oxygen Consumption: a comparation between responders and non-responders to high-intensity interval and continuous endurance training." In XXV Congresso de Iniciação Cientifica da Unicamp. Campinas - SP, Brazil: Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78850.

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Farrell, Megan J., John Shin, and Robert L. Mauck. "Functional Consequences of Glucose and Oxygen Deprivation in Engineered MSC-Based Cartilage Constructs." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14495.

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Clinical implementation of stem cell-based cartilage repair techniques has been limited by the inability of these cells to produce cartilaginous tissue equivalent to that produced by native chondrocytes. We have recently shown that while bulk mechanical properties of mesenchymal stem cell (MSC)-laden constructs are lower than chondrocyte-laden constructs, MSCs can in fact produce tissue that matches or exceeds the biochemical and mechanical properties produced by chondrocytes in regions where there is maximal nutrient supply [1]. We also noted that in the central regions of constructs, where nutrient and oxygen availability is lowest (due to consumption through the construct depth), MSC viability was markedly lower than in the outer regions and drastically lower than the center of chondrocyte-laden constructs maintained similarly. These data suggest that MSCs can achieve a high anabolic functionality when they undergo chondrogenesis (via the provision of TGF-β3) and in doing so can produce tissue of equivalent or greater properties than chondrocytes. However, unlike chondrocytes, MSCs appear thrive only when they are provided with a sufficient nutrient supply. To further delineate the role of microenvironmental stressors [2, 3, 4] on MSC viability and functional capacity, we evaluated the impact of glucose and oxygen deprivation, in the presence and absence of TGF-β, during long term culture. Furthermore, since MSC isolation procedures result in a heterogeneous cell population [5,6], we investigated whether different clonal populations respond to these microenvironmental stressors in a distinct fashion.
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Murphy, S. "STORAGE OF PLATELETS FOR TRANSFUSION - CURRENT METHODS AND PROBLEMS TO BE SOLVED." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643999.

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In the 1970's, when platelet concentrates (PC) were stored in "first generation" plastic containers at 22°C, many showed a fall in pH.In vivo viability was well maintained as pH fell from the starting level, 7.1, to 6.2 but was progressively lost below thatlevel. pH after a storage interval correlated with the platelet count in the PC, the higher the count, the lower the pH after storage. Since 30-50% of PC might have pH below 6.2 after 3 days of storage, shelflife was severely limited.We now have "second generation" containers which allow storage for 7 days without significant fall in pH.Superior pH maintenance results from increased oxygen transport through the walls of the container thuspreventing platelet hypoxia within. Under all circumstances which we have examined, PC, pH correlates inversely with lactate concentration. The superiority of the "second generation" containers results from the lower rate of glycolysis within them due to the Pasteur effect. Like many cells, the platelet has a baseline rate of lactate production which is increased up to 8 times if oxidative metabolism is interrupted by hypoxia. For any container, there is an inverse relationship between PC pCL and platelet count since each platejlet |as a fixed oxygen demand. In "first generation" containers, the pO2 approached zero with platelet counts, 1.0-1.5 × 106 /mm3 , a range commonly seen in practice. At platelet counts above thatlevel, the platelets would have an increasing oxygendebt. The greater the oxygen debt is, the greater will be the rate of lactate production per platelet and, therefore, the rate of pH fall. An ideal "second generation" container will have oxygen permeability twice thgt 05 a "first generation" container such that platelets will begin to have an oxygen debt at platelet count, 2.4 × 106/mm3 , a level rarely seen in practice. In "second generation" containers, there is a continuing, linear production of lactate in spite of adequate oxygen supply. The major buffer in plasma for the hydrogen ion accompanying lactate production is bicarbonate. As lactate is produced, bicarbonate is consumed and pH remains stable until bicarbonate is completely depleted.Thereafter, pH falls precipitously.However, there is adequate bicarbonate in the 50 ml of plasma used as medium for the PC to buffer the baseline production of lactate for seven days.This is the major reason why storage for sevendays is now satisfactory.With knowledge of the oxygen transport capability of a container and measurement of pO2 within the container, we can calculate the rate of oxygen consumptionduring storage, 1.1 nmol/min/109 platelets. Knowing the rates of oxygen consumption and lactate production and the predicted rate of ATP synthesis from ADP for each type of metabolism we calculated that 85% ofATP regeneration is from oxidative metabolism. When we contrasted the rate of glucose consumption with the rate of lactate production, we were surprised that the slope of the regression line was exactly 0.5 suggesting that two moles of lactate were produced for each mole of glucose utilized and that there must be a prominent substrate for oxidative metabolism other than glucose. Recent work in our laboratory suggests fatty acid as such a substrate.There is much to be learned about storage in "secondgeneration" containers. At the onset of storage 70% of the platelets have a discoid appearance whereas after seven days only 30% do with most of the rest being spheres. Furthermore, 5-10% of cells are "leaf-shaped", elongated tubules, or ring forms. In addition, many studies have described reduced platelet function in vitro after storage. There is a 20-50% reduction in the maximal extent of aggregation with high ADP concentrations and the concentrations of single agonists which produce 50% of maximal response are increased after storage. However, we have been encouraged to find that the response to these agents was reduced much less when they were used a pairs. Finally, there is concern that trace bacterial contamination at the time of phlebotomy might allow enough proliferation to produce sepsis in recipients. Further research should improve our understanding inthese areas and the safety and efficacy of platelets after storage.
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Reports on the topic "Maximal oxygen consumption (VO2max)"

1

Sharp, Marilyn A., Joseph M. McGrath, Everett Harman, Joseph J. Knapik, and William A. Sawyer. A Device and Methodology for Measuring Repetitive Lifting VO2max (Oxygen Consumption Rate). Fort Belvoir, VA: Defense Technical Information Center, August 1987. http://dx.doi.org/10.21236/ada185195.

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