Unilateral Conditioning Contractions Enhance Power Output in Elite Short Track Speed Skaters

Sports Medicine International Open

Philippe Gimenez¹  Fabien Dal Maso²  Evelyne Chicoine³  David Amarantini³  Jonathan Tremblay⁴ 

[1] Laboratoire C3S (EA 4660), Université de Bourgogne-Franche-Comté, Besançon, France;ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, France;École de kinésiologie et des sciences de l'activité physique, Université de Montréal, Montréal, Canada;École de kinésiologie et des sciences de l'activité physique, laboratoire de simulation et modélisation du mouvement, Université de Montréal, Montréal, Canada

关键词: exercise;    post activation potentiation;    fatigue;    power;   

DOI  :  10.1055/a-0770-4699

学科分类：运动医学

来源: Georg Thieme Verlag

【 摘 要 】

The objective of the present study was to assess the effect of unilateral lower-body-conditioning muscle contractions during multiple sets of fatiguing repeated jumps in elite athletes. Five elite short-track speed-skating athletes performed 9 sets of 6 maximal consecutive jumps on 2 separate occasions: with (COND) and without (CTRL) preliminary voluntary conditioning contractions (CC) 5 min before the beginning of the sets. The CC consisted of 2 consecutive 3 s maximal unilateral isometric squats against a fixed bar, resulting in a 6 s overall isometric contraction per leg. For each set, power output (PO) was measured using a linear position transducer and averaged over the 6 corresponding repeated jumps. The results showed that PO was significantly greater during the test in COND than in CTRL (pp.

【 授权许可】

CC BY-NC-ND