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Category

Athletics

Document Type

Paper

Abstract

The purpose of this study was to examine the intermuscular distribution of hamstring muscle volume, muscle excitation, and torque production capacity of hip extensors in power-trained (sprint-based) athletes compared to a strength-trained control group. We found higher semitendinosus volume in the power-trained group. The electromyography activity increased with increasing contraction velocity only in the power-trained group, with significant between-group differences observed in the semitendinosus and biceps femoris at high velocity hip extension. Power-trained athletes were stronger during concentric contractions, particularly at high contraction velocities. These results explain possible morphological and neuromuscular mechanisms to increase propulsive force in high-speed running, which should be considered when designing training for sprint-based athletes.

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