Figure 3. Changes in resting serum testosterone (A), and cortisol (B) levels from pre- to post-intervention (mean ± SD) and ES with 95% of CI for the L-Citrulline (L-CIT), sodium bicarbonate (Sb), combined (L-CIT+Sb), placebo (PL) and control (CON) groups. *Significant differences compared with pre and CON (p < 0.05), **significant differences compared with PL (p < 0.05).