Figure 4. (a) Fiber type distribution determined by immunohistochemical staining and (b) CSA of vastus lateralis muscle in young soccer players (mean±SD). *** p < 0.001, ** p < 0.01, * p < 0.05 A vs C; §§ p < 0.01 B vs C; ## p < 0.01, # p < 0.05 A vs B.