Figure 9. Effect of exercise duration on skeletal muscle serum response factor expression and phosphorylation.

Skeletal muscle extract proteins were immunoblotted for serum response factor (SRF) expression (top panel) and phospho-Ser¹⁰³SRF (middle panel). The bottom panel is signal intensity for phospho-Ser¹⁰³SRF relative to SRF expression. Representative immunoblots are shown. Data are mean ± s.e.m., n = 8. *P < 0.05 versus time 0.