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Strategies of elite Chinese gymnasts in coping with landing impact from backward somersault.

ABSTRACT: This study aimed to investigate how elite Chinese gymnasts manage the landing impact from a backward somersault. Six international-level male gymnasts performed backward somersault tests with a synchronous collection of kinematics (250 Hz), ground reaction forces (1,000 Hz), and surface electromyography (EMG) (2,000 Hz). A 19-segment human model was developed and lower extremity joints torques were calculated by means of a computer simulation. The angles of the lower extremity joints initially extended and then flexed. These angular velocities of extension continued to decrease and the joint torques changed from extensor to flexor within 100 ms before touchdown. The angles of the hips, knees, and ankles flexed rapidly by 12°, 36°, and 29°, respectively, and the angular velocities of flexion, flexor torque, and EMG peaked sharply during the initial impact phase of the landing. The angles of the hips, knees, and ankles flexed at approximately 90°, 100°, and 80°, respectively. The torques were reversed with the extensor torques, showing a relatively high level of muscle activation during the terminal impact phase of the landing. The results showed that the international-level gymnasts first extended their lower extremity joints, then flexed just before touchdown. They continued flexing actively and rapidly in the initial impact phase and then extended to resist the landing impact and maintain body posture during the terminal impact phase of the landing. The information gained from this study could improve our understanding of the landings of elite gymnasts and assist in injury prevention.

SUBMITTER: Wu C

PROVIDER: S-EPMC6816378 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Strategies of elite Chinese gymnasts in coping with landing impact from backward somersault.

Wu Chengliang C Hao Weiya W Mei Qichang Q Xiao Xiaofei X Li Xuhong X Sun Wei W

PeerJ 20191025

This study aimed to investigate how elite Chinese gymnasts manage the landing impact from a backward somersault. Six international-level male gymnasts performed backward somersault tests with a synchronous collection of kinematics (250 Hz), ground reaction forces (1,000 Hz), and surface electromyography (EMG) (2,000 Hz). A 19-segment human model was developed and lower extremity joints torques were calculated by means of a computer simulation. The angles of the lower extremity joints initially e ...[more]

PMID: 31667015

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Project description:BackgroundThe combination of stressors unique to the athletic context plus the sensitive developmental phase that elite athletes go through during their peak performance may increase the athletes' vulnerability to mental health decrements. To emphasize the necessity to raise elite athletes' awareness of health risks, it seems to be essential to teach them coping skills to handle stress and to make affected athletes aware of how to recognize, evaluate, and articulate potential risks to their health.ObjectiveThis systematic review analyzes coping strategies used by elite athletes to deal with stress and the effect of these strategies on mental health to identify gaps that future research could prioritize.MethodsThe current review analyzes studies containing quantitative, qualitative, and mixed data and results, all of them focusing on coping strategies to deal with stress and the effect of coping strategies on elite athletes' mental health. Literature search for this systematic review took place between August and October 2023 and included the use of 3 electronic databases: PubMed, PsychINFO, SPORTdiscus.ResultsThere were initially 5,705 hits from 3 electronic databases, hand search and from a complementary search in Google Scholar. After the screening process and quality appraisal 30 studies were included. The analyzed study results point to a broad spectrum of coping categories, elite athletes make use of to deal with stressful situations. The results of this review underpin the necessity that especially young athletes being confronted with a wide range of stressors, need to be taught mental skills to cope with these stressors. In addition, teaching coaches and teammates about social support seemed to decrease elite athletes' stress reactions, such as anxiety or depressive symptoms.ConclusionCoping in elite sporting settings is very complex and dynamic. There is evidence of coping being effective to buffer stress, but the interrelationships between stressor, appraisal of the stressor, application of a corresponding coping strategy and its effect especially in terms of mental health outcomes is still unclear because of lacking intervention-based study designs.

Project description:In order to perform difficult vaults in artistic gymnastics, athletes have to achieve high run-up speeds within the limited run-up distance (25m). However, the physical parameters that contribute to a high run-up speed and their age-related differences remain elusive. Hence, the aim of this study was 1) to investigate interrelations between difficulty value (D-score) and run-up kinematics of Handspring/Tsukahara and Yurchenko vaults as well as lower body power (25m-sprint, explosive and reactive strength) and 2) to explore age-related differences of these parameters across junior and elite gymnasts performing Handspring/Tsukahara vaults. For this purpose, the data (of the above mentioned parameters) of 47 top-level male elite and junior gymnasts aged 14.3 to 28.3 of performance testing, gathered over three years, were analysed. We found that D-score of Handspring/Tsukahara (n = 33) was strongly correlated with run-up speed (r = 0.79; p < 0.01). Further, 25m sprint speed (r = 0.85; p < 0.01) was significantly associated with run-up speed of Handspring/Tsukahara-vaults. There were no significant relationships with the D-score of Yurchenko (n = 14). Looking at the age-related differences of Handspring/Tsukahara, D-score increased significantly from junior to elite level (+11.6%; p < 0.01). The comparison between consecutive age-groups revealed that the U19 group had higher run-up speeds, step lengths, body weights and heights than the U17 group, while the U21 group achieved significantly higher speeds (run-up, 25m-sprint) and explosive strength than the U19 group. We concluded 1) that the optimization of important physical determinants may increase the potential to perform more difficult Handspring/Tsukahara vaults and 2) that first growth and maturation and later improvements of lower body power led to higher run-up speeds of Handspring/Tsukahara in the subsequent age-group. Therefore, based on performance testing of the lower limbs, training recommendations should be given specifically to the requirements of the competition vault.

Dataset Information

Strategies of elite Chinese gymnasts in coping with landing impact from backward somersault.

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Strategies of elite Chinese gymnasts in coping with landing impact from backward somersault.

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