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Using box jumps to improve
your power output? Then make sure you limit the number of reps you perform each set. Study subjects who did 10 sets of 2 reps, with a 10-second rest between sets, demonstrated greater power production, take-off velocity and jump height than those who did two sets of ten reps, with 90 seconds’ rest between efforts. If your aim is to develop power endurance, then higher-rep sets may still be useful – but if it’s all-out power you want, keep it short and explosive.