From: Effects of caffeine supplementation on anaerobic power and muscle activity in youth athletes
Peak power (W/Kg)
Mean power (W/Kg)
Fatigue index (%)
CAF
9.90 ± 2.04*
7.57 ± 1.38*
52.51 ± 9.48
PL
9.10 ± 1.75
7.18 ± 1.4
49.27 ± 10.39