%0 Journal Article %T Contribution of segmental kinetic energy to forward propulsion of the centre of mass: Analysis of sprint acceleration %+ French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA7370) (SEP (EA7370)) %+ Université de Reims Champagne-Ardenne (URCA) %+ Performance, Santé, Métrologie, Société - EA 7507 (PSMS) %+ Université Paris Nanterre - UFR Sciences et techniques des activités physiques et sportives (UPN STAPS) %+ Laboratoire Interdisciplinaire en Neurosciences, Physiologie et psychologie (LINP2) %+ Faculté de génie [Sherbrooke] (UdeS) %A Slawinski, Jean %A Houel, Nicolas %A Moreau, Camille %A Mahlig, Alexia %A Dinu, Daniel %< avec comité de lecture %@ 0264-0414 %J Journal of Sports Sciences %I Taylor & Francis %8 2022 %D 2022 %R 10.1080/02640414.2022.2066829 %K Inertial sensors %K Sprint performance %K Kinetic energy %K Power %K Performance %Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] %Z Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]Journal articles %X 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. %G English %2 https://hal.univ-reims.fr/hal-03644125/document %2 https://hal.univ-reims.fr/hal-03644125/file/Segmental%20Contribution_HAL.pdf %L hal-03644125 %U https://hal.univ-reims.fr/hal-03644125 %~ UNIV-PARIS10 %~ URCA %~ INSEP %~ PSMS %~ UNIV-PARIS-LUMIERES %~ UNIV-PARIS-NANTERRE %~ LINP2