Abstract The purpose of this study was to determine whether there was a dose-response relationship between muscle activity during a propulsive phase of speed bounding on sloped surfaces in youth male sprinters. In a randomized, crossover counterbalanced design, 12 male sprinters (age: 15.75 [+ or -] 0.45 yrs, height: 1.72 [+ or -] 0.06 m), performed …