Biomechanical Differences Among Collegiate Sprinters Developed Through Specialized and Diversified Training Pathways

专业化和多元化训练路径下大学短跑运动员的生物力学差异

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Abstract

This study compared collegiate sprinters from two common admission routes in China to identify pathway-associated differences that may inform subsequent training for athletes entering via the Physical Education College Entrance Examination pathway. Twenty male collegiate sprinters were allocated to a Sports Independent Enrollment group and a Physical Education College Entrance Examination group, with ten participants in each. Participants completed isokinetic knee testing, drop jump tests, static balance tests, and drop jump electromyography assessment. Isokinetic outcomes were largely comparable between groups, although the Sports Independent Enrollment group showed faster time to reach peak torque in the nondominant-side knee extensors. In drop jumps, the Sports Independent Enrollment group demonstrated higher reactive strength, shorter ground contact time, greater leg stiffness normalized to body weight, and shorter propulsion duration. Electromyography patterns differed between groups across movement phases. Balance differences were mainly observed under the single-leg eyes-closed condition in unadjusted comparisons, but none remained significant after false discovery rate adjustment. Overall, between-group differences were more evident in rapid force production and neuromuscular control than in the magnitude of isokinetic strength. These findings provide practical targets for designing subsequent training priorities for athletes entering through the Physical Education College Entrance Examination pathway.

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