Fig. 4.

Flk-1, SDH, and COX-4 protein expression in adult, old and old-res muscle. a SDH protein expression was similar in adult and old muscle, while COX-4 protein expression was decreased in old muscle (^a P < 0.05). The SDH/COX-4 ratio (b) was not significantly different in aged muscle. c Flk-1 protein expression in m. plantaris, an important receptor for VEGF, was decreased in old compared to adult muscle (^a P < 0.05), but not affected by overload or resveratrol. The results are presented as the ratio protein of interest/loading control (eEF2). Values are mean ± SEM