FatigueDuring sprint training, the athlete should be conscious of fatigue because the development of fatigue can reduce sprint performance capacity. As fatigue is manifested, stride rate can be decreased, while stride length increases and the duration of the ground support phase can increase. These events effectively decrease the effectiveness of the SSC that is applied between the eccentric and concentric subphases of the support phase. High levels of fatigue may also reduce ranges of leg extension(87)These breakdowns in running mechanics may be partially explained by the occurrence of metabolic fatigue(91)