Fig. 3
Plasma BCAA (a) and tryptophan (b) concentrations and tryptophan/BCAA ratio (c) in the AA and PL trialsa. aAA: BCAA, arginine, and citrulline; PL: placebo. (a) Main effects: trial: p < .001; time: p < .001; interaction: p < .001; (b) Main effects: trial: p = .252;time: p = .050; interaction: p = .196; (c) Main effects: trial: p < .001;time: p < .001; interaction: p < .001; *Significantly different between the 2 trials (p < .001). † Significantly different from the baseline in the AA trial (p < .05)