Figure 4.

Effect of l‐citrulline supplementation on the expression of PGC‐1α and PGC‐1α‐related genes in the gastrocnemius and biceps femoris. Expression levels of PGC‐1α and PGC‐1α‐targeted genes in the A) gastrocnemius and B) biceps femoris were evaluated. Expression levels of mRNA were normalized to the β‐actin expression level. Values are expressed as the mean ± standard deviation and relative to the “no exercise” group. *p ≤ 0.05 and **p ≤ 0.01 indicate a significant difference compared to the control group.