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Etude du contrôle et du transfert de la motricité des perchistes experts pour la réalisation de l'impulsion dans les activités athlétiques

Abstract : Many studies investigate motor control during simple movements (such as reaching for a target or bimanual coordination), but the theories of motor control need to be tested during sport movement. One of the most spectacular activities in world of sport is pole vaulting. One critical phase in this jumping event appears to be between touchdown (TD) and take-off (TO). This study has three objectives, first, characterise the EMG and kinematic data exhibited during the take-off in a short run-up training pole vaulting exercise, for two different expertise lev el (expert-novice); second, pro vide a better understanding of this phase and its role in performance outcome by recording EMG and kinematic variable during a real run-up pole vaulting; last, determine whether or not a motor control transfer appears between similar activities (pole vault, long jump and hurdles ). The results show that at TD, the expert tended to increase rigidity of the take off leg to decrease braking and to allow forward energy transmissions. These results highlight the differences between two groups in terms of muscular and angular control. The results, for the second objective, showed that there are no differences in the evolution of hip, knee and ankle angles. However, differences in the EMG signal was noted inter- and intra pole vaulter coordination, although for the same subject the EMG activities seamed to converge on sorne phase locked-point. The results for the third objective showed that expert pole vaulters used part of their motor pro gram in a similar way to execute new movement (hurdles and long jump ). Pole vaulters appears to have approximately the same coordination reflecting a different muscular control among pole vaulters but also within a given pole vaulter. The phase locked point could be considered as an invariant of motor control. Using part of motor program stored in pole vaulters memory permit a new movement to be adapted.
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https://hal-uphf.archives-ouvertes.fr/tel-02997790
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Submitted on : Tuesday, November 10, 2020 - 11:27:56 AM
Last modification on : Saturday, November 28, 2020 - 3:21:12 AM

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  • HAL Id : tel-02997790, version 1

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Maud Bassement. Etude du contrôle et du transfert de la motricité des perchistes experts pour la réalisation de l'impulsion dans les activités athlétiques. Biomécanique [physics.med-ph]. Université de Valenciennes et du Hainaut-Cambrésis, 2018. Français. ⟨NNT : 2008VALE0046⟩. ⟨tel-02997790⟩

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