Figure 5. The relationship between ΔVEGF and Δstress (A), ΔVEGF and Δfatigue (B), ΔVEGF and ΔCPK (C), and ΔVEGF and Δsleep (D) are plotted.

The values before training were subtracted from the values during training and were expressed as Δvalues. A significant negative correlation was noted between ΔVEGF and Δfatigue (B; R = −0.375, p = 0.003).