Affiliation:
1. French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA 7370) Paris France
2. French Athletics Federation (FFA) Paris France
3. Paris Cité University Paris France
4. Pole Parasport ‐ ISPC Synergies, CHU Raymond Poincaré, APHP Garches France
5. Arts et Metiers Institute of Technology, IBHGC – Institut de Biomecanique Humaine Georges Charpak Paris France
Abstract
AbstractIn 200‐ and 400‐m races, 58% of the total distance to cover is in the curve. In the curve, the sprinting performance is decreased in comparison to the straight. However, the reasons for this decreased performance is not well understood. Thus, the aim of this study was to identify the kinetic parameters underpinning the sprinting performance in the curve in comparison to the straight. Nineteen experienced‐to‐elite curve specialists performed five sprints in the straight and in the curve (radius 41.58 m): 10, 15, 20, 30, and 40 m. The left and the right vertical, anterior–posterior, medial‐lateral, and resultant ground reaction forces (respectively , , , and ), the associated impulses (respectively , , , and ) and the stance times of each side were averaged over each distance. In the curve, the time to cover the 40‐m sprint was longer than in the straight (5.52 ± 0.25 vs. 5.47 ± 0.23 s, respectively). Additionally, the left and the right and were lower than in the straight while the left and the right increased, meaning that the was more medial. The left was also lower than in the straight while the left stance times increased to keep the left similar to the straight to maintain the subsequent swing time. Overall, the sprinting performance was reduced in the curve due to a reduction in the left and the right and , that were likely attributed to the concomitant increased to adopt a curvilinear motion.
Funder
Association Nationale de la Recherche et de la Technologie