Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Contribution of segmental kinetic energy to forward propulsion of the centre of mass: Analysis of sprint acceleration

Abstract : This study aimed to measure the contribution of each body segment to the production of total body kinetic energy (KE) during a 40-m sprint. Nine recreational sprinters performed two 40-m sprints wearing a MVN Biomech suit (Xsens). Data recorded were used to calculate total body KE, and the KE of each segment. The KE of each segment was then expressed as a percentage of the total body KE. We divided the sprint into three phases: 1 – start to maximal power (Pmax), 2 – Pmax to maximal velocity (Vmax), and 3 – Vmax to the end of the 40 m. Total body KE increased from the start to the end of the 40-m sprint (from 331.3 ± 68.4 J in phase 1 to 2378.8 ± 233.0 J in phase 3; p ≤ 0.001). The contribution of the head–trunk increased (from 39.5 ± 2.4% to 46.3 ± 1.1%; p ≤ 0.05). Contribution of the upper and lower limbs decreased over the three phases (respectively from 15.7 ± 2.5% to 10.6 ± 0.6% and from 44.8 ± 2.1% to 43.1 ± 1.5%; p ≤ 0.05). This study revealed the important contribution of the trunk to forward propulsion throughout the entire acceleration phase.
Liste complète des métadonnées

https://hal.univ-reims.fr/hal-03644125
Contributeur : Nicolas Houel Connectez-vous pour contacter le contributeur
Soumis le : vendredi 13 mai 2022 - 17:06:16
Dernière modification le : mardi 17 mai 2022 - 03:37:32

Fichier

Segmental Contribution_HAL.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Jean Slawinski, Nicolas Houel, Camille Moreau, Alexia Mahlig, Daniel Dinu. Contribution of segmental kinetic energy to forward propulsion of the centre of mass: Analysis of sprint acceleration. Journal of Sports Sciences, Taylor & Francis, In press, ⟨10.1080/02640414.2022.2066829⟩. ⟨hal-03644125⟩

Partager

Métriques

Consultations de la notice

42

Téléchargements de fichiers

2