Power-to-Strength Ratio Influences Performance Enhancement with Contrast Training

AbstractPurposeThe effectiveness of contrast training (CST) for improving explosive exercise performance is modulated by various individual characteristics; however, further work is required to define these factors.MethodsSub-elite male Australian Football players [n = 22; age, 19 ± 2 y; body mass, 80.4 ± 9.4 kg; one-repetition maximum (1-RM) half squat, 172 ± 18 kg; mean ± SD] completed two experimental trials involving two sets of squat jumps (6 repetitions at 30% 1-RM) performed either alone (CTL condition) or after half squats (6 repetitions at 85% 1-RM; CST condition).ResultsSquat jump peak power was similar between CTL and CST during set 1 (mean change ±90% confidence interval, 2.8 ±2.0%; effect size [ES] ±90% confidence interval, 0.13 ±0.09; P = 0.079) and set 2 (0.3 ±1.7%; ES, 0.01 ±0.08; P = 0.781). Peak power enhancement with CST was not related to maximal (1-RM half squat) strength (r2 = 0.001, P = 0.884), but was negatively correlated with both baseline peak power (r2 = 0.44, P

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