Figure 4.

Effects of tannase-treated catechin on mRNA levels of (a) MyoD, (b) Myf5, and (c) myogenin in aged mice. Each value represents the mean ± standard error (SE) for each group (n = 8). Different letters indicate significant differences at p < 0.05 according to Tukey's test. EC: epicatechin (2 mg/kg); T₁: middle-concentration tannase-converted green tea extract (20 mg/kg); T₂: high-concentration tannase-converted green tea extract (40 mg/kg); MyoD: myoblast determination protein; Myf5: myogenic factor 5.