The protein expression levels in QF muscle. PDK4 (A) expression showed higher expression levels in all other groups, when compared to LFsed mice. PGC-1α (B) showed no statistical differences between the groups. ERRα (C) expression was considered to show a statistical effect of running. The protein expression results are normalized to the mean value of LFsed. (D) Representative Western blot images. n = 14-15 animals/group. * = vs. LFsed (P <0.05), NS = non-significant (P > 0.1). Black bars = sedentary, grey bars = running.