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Articles de revues sur le sujet « Hammer throwing Hammer throwing Biomechanics »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 8 février 2022

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1

Pavlović, Ratko. « Differences in kinematic parameters between male and female hammer throw finalists of the World Championship in Daegu in 2011 ». Pedagogy of Physical Culture and Sports 24, no 5 (30 octobre 2020) : 255–63. http://dx.doi.org/10.15561/26649837.2020.0506.

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Background and Study Aim. Hammer throwing is the most complex athletic throwing discipline with rotational trajectory and strong effect of several different forces that try to disable the projected throwing trajectory. Kinematic parameters are an important segment in the analysis of athletic disciplines, including hammer throw. They are an indicator of influence and often a difference between competitors of different or the same rank of the competition. The aim of the study was to determine the spatial and temporal differences of kinematic parameters between male and female elite hammers. Material and Methods. The study was conducted on sample of 16 Daegu World Championship finalists in 2011, to analyse differences in kinematic parameters between male and female throwers hammer. To obtain the required results, t-test for small independent samples was applied. Results. The data obtained in the study were given as Mean and Standard deviation. Statistically significant differences between male and female finalists were confirmed in the rate of ejection (t=3.684; p<0.004) and the speed of the fourth turn (t=4.396; p<0.002). The male finalists achieved an average ejection velocity of 27.91m/s and the female finalists 27.17m/s, with an average turn speed of 4.67m/s (male) and 4.03m/s (female). Conclusions. The research has shown that significant differences were made between male and female finalists in Daegu in 2011. The causes of differences can be found in length of training, different training process, technical mastery, competitor experience, morphological profile, motor and anatomical structures, movement technique and biomechanical parameters, which were not taken into the research.
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Kim, Tae-Sam, Ji-Seon Ryu, Mi-Sook Lee, Suk-Hoon Yoon et Jae-Myoung Park. « Analysis of Projectile Factors and Biomechanical Characteristics of Men's Hammer Throwing during Turning Phases ». Korean Journal of Sport Biomechanics 21, no 2 (30 juin 2011) : 141–52. http://dx.doi.org/10.5103/kjsb.2011.21.2.141.

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3

Wang, Ye, Hua Li, Bingjun Wan, Xiang Zhang et Gongbing Shan. « Obtaining Vital Distances Using Wearable Inertial Measurement Unit for Real-Time, Biomechanical Feedback Training in Hammer-Throw ». Applied Sciences 8, no 12 (3 décembre 2018) : 2470. http://dx.doi.org/10.3390/app8122470.

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The hammer throw is one of the regular track and field competitions, but unlike other events, it has not seen a new world record for over three decades. The standstill may be caused by the lack of scientifically based training. In our previous work, we have developed a wireless/wearable device for the wire tension measurement in order to develop real-time biomechanical feedback training. In this paper, we show the improvement of our wearable system by adding two sensors for tracking of two vital vertical distances. The paper describes the details related to the development of turning an inertial measurement unit into a tracking device for the dynamic distances. Our preliminary data has shown that the dynamic data of the hip and wrist could be used for revealing the coordination between the upper and the lower limbs during a throw. In conjunction with wearable wire-tension measurement, various motor control patterns employed for hammer throwing could be demystified. Such real-time information could be valuable for hammer-throw learning and optimization. Further studies are required to verify the potentials of the wearable system for its efficiency and effectiveness in coaching practice.
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4

DAPENA, JESÚS, MARCOS GUTIÉRREZ-DÁVILA, VÍCTOR SOTO et FRANCISCO ROJAS. « Prediction of distance in hammer throwing ». Journal of Sports Sciences 21, no 1 (janvier 2003) : 21–28. http://dx.doi.org/10.1080/0264041031000070921.

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5

Jia, Chong, Chang Dong Li, Sheng Yi Ma et Ji He Zhou. « Studies on the Kinematics of Chinese Elite Man Hammer Athlete Throwing Technology ». Applied Mechanics and Materials 568-570 (juin 2014) : 1930–33. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.1930.

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The purpose of this study is to provide the theoretical basis for the teaching and training of the hammer throwing and improve Chinese man hammer to reach world-class as soon as possible. This paper made a 3-D camera resolution on the top three men's hammer throwers in 2012 China Long Throw Open (Shizhu Wang, Kun Guo and Xiao Feng). With the comparative analysis on the related kinematic parameters of the world elite men's hammer throwers, it presents the main problems and gaps in China men's hammer throwers motion technology.
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6

Wang, Shuai, Ji He Zhou et Chong Jia. « Kinematics Analysis on the Throwing Skills of Elite Chinese Male Hammer Athletes ». Advanced Materials Research 950 (juin 2014) : 91–92. http://dx.doi.org/10.4028/www.scientific.net/amr.950.91.

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Hammer throw is one of the traditional track and field events but it only has a short history in China. Chinese hammer athlete Shizhu Wang won the championship of China Long Throw Open in 2013, but the performance in the game has a big gap with the world record. In order to improve the techniques of Chinese men hammer athletes, have a clearly understanding of the rational factors and internal relations of hammer throw technique, enrich the theory of the action and provide reference to the hammer throw training, we made a 3D camera resolution on the top three men hammer throwers (Shizhu Wang, Dakai Qi and Xiwan Jiang) at the game site of China Long Throw Open in 2013, with the three-dimensional analysis we gained the kinematic parameters. We made a comparison on the parameters between Chinese and foreign elite men hammer throwers. The result shows that: Compared with the datas of outstanding foreign athletes, the pre-swing time is much larger and hammer velocity increment is much smaller in the pre-swing stage; the total rotation time is much longer, and the single to double supporting time is distributed unreasonly, what’s more, the change between the knee joint and bevel angle are too small; the shot speed ,with the fastest Shizhu Wang of 24.87 m/s, is much slower than that of foreign famous athlete Sedych (30.7 m /s), and longer hammer throw running time, which are the main reasons that affect athletes’ performance.
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7

Kil, S. K., T. W. Kim, S. C. Lee, J. H. Hwang et Y. H. Han. « Development of Tension Measuring Device for Hammer Throwing ». Journal of Rehabilitation Welfare Engineering & ; Assistive Technology 13, no 4 (30 novembre 2019) : 366–71. http://dx.doi.org/10.21288/resko.2019.13.4.366.

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8

Hirose, Kenichi, Keigo Ohyama Byun, Hiroaki Fujii, Kazuhiro Aoki, Kei Maeda, Ryosuke Kajitani et Mitsugi Ogata. « Effects of heavier hammer training on throwing distance and technique in the hammer throw ». Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences) 62, no 1 (2017) : 215–26. http://dx.doi.org/10.5432/jjpehss.16071.

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9

Karalis, T. K. « Control torque components of center-of-mass motions in hammer throwing ». Archive of Applied Mechanics 61, no 5 (1991) : 344–60. http://dx.doi.org/10.1007/bf00787602.

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10

Hirose, Kenichi, Keigo Ohyama Byun, Hiroaki Fujii, Kazuhiro Aoki et Mitsugi Ogata. « Kinematic characteristics of throwing with the heavier hammer during the hammer throw : Consideration of its usage for resisted training ». Taiikugaku kenkyu (Japan Journal of Physical Education, Health and Sport Sciences) 61, no 1 (2016) : 75–89. http://dx.doi.org/10.5432/jjpehss.15056.

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11

Pavlović, Ratko, Javier Lamoneda Prieti et Emilija Petković. « THE DIFFERENCES IN KINEMATIC PARAMETERS OF HAMMER THROW FINALISTS OF THE 2017 LONDON ATHLETICS WORLD CUP ». Sportlogia 16, no 1 (17 décembre 2020) : 126–48. http://dx.doi.org/10.5550/sgia.201601.en.ppp.

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Hammer throw is motor-wise an extremely complex throwing discipline with the manifestation of several different forces that impede the rotational movement of the device and the thrower in the projected sagittal plane. Kinematic parameters are one of the segments when analyzing athletic disciplines, including hammer throw. This study aims to determine spatial and time differences of kinematic parameters between male and female hammer throw finalists at the 2017 Athletics World Cup in London. The study was conducted on a sample of 24 finalists of the 2017 Athletics World Cup in London, with the aim to analyze the differences in kinematic parameters between male and female hammer throwers. The results were acquired by applying the Independent Sample t-Test. It has confirmed the differences in most of the parameters, except those regarding ejection height (T=2,992; p<0,009), where it established statistically significant discrepancies between male and female finalists. On average, the male finalists threw a hammer from a height of 1,74±0,13m, and the female finalists from 1,54±0,17m. Based on the obtained results of kinematic parameters, it can be concluded that quantitative and qualitative differences in the measured kinematic parameters of the finalists in London are evident, but that statistically significant differences are recorded only in the ejection hight of the device.
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12

Dapena, Jesús, et Michael E. Feltner. « Influence of the direction of the cable force and of the radius of the hammer path on speed fluctuations during hammer throwing ». Journal of Biomechanics 22, no 6-7 (janvier 1989) : 565–75. http://dx.doi.org/10.1016/0021-9290(89)90008-0.

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13

Chen, Chung-Wen, Szu-Kai Fu, Jen-Chun Lo, Kuo-Wei Tseng et Chang-Chi Lai. « Effects Of High Concentration Oxygen Intervention On Physiological Recovery From High Intensity Hammer Throwing Training ». Medicine & ; Science in Sports & ; Exercise 50, no 5S (mai 2018) : 790. http://dx.doi.org/10.1249/01.mss.0000538602.33496.1c.

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14

Pangelova, Natalia, et Natalia Vasylenko. « COMPARATIVE ANALYSIS FUNCTIONAL CONDITION SENSOMOTOR SYSTEMS QUALIFIED METALISTS HAMMER (HEALTHY AND HEARING IMPAIRED) ». Sports Bulletin of the Dnieper 1 (2020) : 100–108. http://dx.doi.org/10.32540/2071-1476-2019-1-100.

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Introduction. Adaptation of the athlete's organism with auditory deprivation to training and competitive activity is ensured by the active participation of the central nervous system, sensory systems, among which the important role is played by visual, vestibular, kinesthetic, tactile-vibration analyzers, which ensure the quality of movement. In this regard, studying the activity of sensorimotor systems of healthy athletes and hearing impaired will determine the ways of correction of the motor activity of the latter. The objective - study and comparative analysis of physiological features of sensorimotor systems of qualified hammer throwers (healthy and hearing impaired). Materials and methods. Research methods: analysis, generalization and systematization of data scientific and methodological literature; psychophysiological methods (simple visual-motor reaction; reaction to a moving object; tepping test; choice and discrimination reaction; critical part of light flickering; attention assessment); methods of mathematical statistics. Nine female athletes specializing in hammer throwing participated in the study: 7 of them are masters of sports of Ukraine, 2 - masters of sports of international class (5 female athletes have hearing impairments, 4 are healthy). The studies were conducted in October-November 2019 at the Donetsk Regional Children's and Youth Sports School for Persons with Disabilities (Mariupol). Results. The studies suggest that the thrower hammer with hearing problems (especially in persons with bilateral sensorineural deafness), in most cases there is a lack of speed of receiving and processing visual information, poor concentration and stability of attention, increasing the number of errors compared to almost healthy athletes. It should also be noted in hammer throwers with hearing impairment that there is an imbalance of nerve processes with a predominance of inhibition, their weakness and inertia. Conclusions. The data obtained confirm the need for the development of a training program, the basis of which is a deliberate impact on visual and vestibular analyzers in order to correct existing abnormalities and compensate for hearing impairment by further improving the functioning of the motor analyzer. Key words: sensorimotor systems, functional state, hammer throwers, hearing defects.
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15

성봉주 et 이영선. « An Examination of Basic and Specific Fitness of Elite National Throwing Athletes (Javelin, Shot put, Discus, Hammer Throwers) ». Korean Journal of Sport Science 22, no 3 (septembre 2011) : 2220–36. http://dx.doi.org/10.24985/kjss.2011.22.3.2220.

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16

Luo, Man, Jian Hong Yang et Huai Ying Fang. « An Investigation on Sand Production of Vertical Shaft Impact Crusher Using EDEM ». Advanced Materials Research 1004-1005 (août 2014) : 1226–30. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1226.

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Discrete element modeling (DEM) is the most suitable modeling technique to simulate the mass flow of particles in chamber recently, which is an important part of VSI to break rock. DEM is presented in this message to predict sand production within a US7 vertical shaft impact crusher. Sand production is one of important parameters to judge the productiveness of VSI. Despite complicated particle movements in vertical shaft impact crusher, it is a necessary work to study the sand production of VSI. Vertical shaft impact crusher is simulated under different conditions in EDEM software.In order to investigate effects of different parameters on sand production, four parameters which include rotor rotation, inputs, radius of particle and interval between the rock bed and throwing material hammer were separately set into simulation tests.
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17

Maryam, Cheraghidocheshmeh, Mossavi yaghoob, Noroozy Darush et Izadi Mojtaba. « The comparison of effect of video-modeling and verbal instruction on the performance in throwing the discus and hammer ». Procedia - Social and Behavioral Sciences 1, no 1 (2009) : 2782–85. http://dx.doi.org/10.1016/j.sbspro.2009.01.493.

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18

Kundert, Alexandra, Pantelis Nikolaidis, Stefania Di Gangi, Thomas Rosemann et Beat Knechtle. « Changes in Jumping and Throwing Performances in Age-Group Athletes Competing in the European Masters Athletics Championships between 1978 and 2017 ». International Journal of Environmental Research and Public Health 16, no 7 (3 avril 2019) : 1200. http://dx.doi.org/10.3390/ijerph16071200.

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The results of master athletes have been used previously to examine the age-related differences in aerobic capacity, however, less research has been conducted on the variation of jumping and throwing performances with aging. Therefore, the aim of the present study of elite master athletes was to investigate (a) the age-related differences in throwing (i.e., discus, hammer, javelin, and shot put) and jumping events (i.e., high jump, long jump, pole vault, and triple jump) in 5-year age-group intervals from 35–39 to 95–99 years of elite master athletes, and (b) the trends in performance and sex differences. The top eight female and male finalists for each age group and in each event from 20 European Masters Athletics Championships held between 1978 and 2017 were considered. Overall, 13,673 observations from 4726 master athletes were analyzed. For each event separately, a mixed regression model was performed with sex, age group, calendar year, and interaction terms (sex-age group, sex-year) defined as fixed effects. Performances were improving over time with a linear trend overall for each event. Men had better performances as compared to women, (i.e., in triple jump the estimated difference was 2.58 m, p < 0.001). Performances declined with age for each event (i.e., in triple jump, compared with the age group 45–49 years, performance in the age group 35–39 years was 0.98 m better and performance in the age group 85–89 years was 6.24 m worse). The decline of male performances with age was either slower or faster than the decline of female performances depending on age groups and events.
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19

Keller, Robert A., Anthony F. De Giacomo, Julie A. Neumann, Orr Limpisvasti et James E. Tibone. « Glenohumeral Internal Rotation Deficit and Risk of Upper Extremity Injury in Overhead Athletes : A Meta-Analysis and Systematic Review ». Sports Health : A Multidisciplinary Approach 10, no 2 (30 janvier 2018) : 125–32. http://dx.doi.org/10.1177/1941738118756577.

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Context: Current perception dictates that glenohumeral internal rotation deficit (GIRD) is a chronic adaptation that leads to an increased risk of pathologic conditions in the dominant shoulder or elbow of overhead athletes. Objective: To determine whether adaptations in glenohumeral range of motion in overhead athletes lead to injuries of the upper extremity, specifically in the shoulder or elbow. Data Sources: An electronic database search was performed using Medline, Embase, and SportDiscus from 1950 to 2016. The following keywords were used: GIRD, glenohumeral internal rotation deficit, glenohumeral deficit, shoulder, sport, injury, shoulder joint, baseball, football, racquet sports, volleyball, javelin, cricket, athletic injuries, handball, lacrosse, water polo, hammer throw, and throwing injury. Study Selection: Seventeen studies met the inclusion criteria for this systematic review. Of those 17 studies, 10 included specific range of motion measurements required for inclusion in the meta-analysis. Study Design: Systematic review and meta-analysis. Level of Evidence: Level 4. Data Extraction: Data on demographics and methodology as well as shoulder range of motion in various planes were collected when possible. The primary outcome of interest was upper extremity injury, specifically shoulder or elbow injury. Results: The systematic review included 2195 athletes (1889 males, 306 females) with a mean age of 20.8 years. Shoulders with GIRD favored an upper extremity injury, with a mean difference of 3.11° (95% CI, –0.13° to 6.36°; P = 0.06). Shoulder total range of motion suggested increased motion (mean difference, 2.97°) correlated with no injury ( P = 0.11), and less total motion (mean difference, 1.95°) favored injury ( P = 0.14). External rotational gain also favored injury, with a mean difference of 1.93° ( P = 0.07). Conclusion: The pooled results of this systematic review and meta-analysis did not reach statistical significance for any shoulder motion measurement and its correlation to shoulder or elbow injury. Results, though not reaching significance, favored injury in overhead athletes with GIRD, as well as rotational loss and external rotational gain.
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20

« A temporal analysis of competition hammer throwing ». Journal of Science and Medicine in Sport 5, no 4 (décembre 2002) : 12. http://dx.doi.org/10.1016/s1440-2440(02)80064-0.

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21

LI, Peng, Ji-he ZHOU et Qi LI. « Kinematic Analysis the Champion in Hammer Throwing 2015 ». DEStech Transactions on Engineering and Technology Research, icamm (18 avril 2017). http://dx.doi.org/10.12783/dtetr/icamm2016/7388.

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LI, Peng, et Ji-he ZHO. « Kinematic Analysis the Champion of Wangshizhu in Hammer Throwing 2015 ». DEStech Transactions on Materials Science and Engineering, mmme (23 mai 2017). http://dx.doi.org/10.12783/dtmse/mmme2016/10083.

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