Fig. 3From: The influence of caffeine ingestion on strength and power performance in female team-sport playersMean (± SD) plasma concentrations of (a) insulin (μU·mL−1) and (b) free fatty acids (FFA; mmol·mL− 1) for caffeine (CAFF) and placebo (PLA) trials before, during and after the 90-min intermittent exercise protocol. * Significantly higher in CAFF trial (P < 0.05; n = 10)Back to article page