Fig. 5.

Activities of mitochondrial electron transport chain complexes in skeletal muscle of the experimental groups. The activity of a mitochondrial complex I (NADH-coenzyme Q oxidoreductase), b mitochondrial complex II (succinate dehydrogenase-coenzyme Q oxidoreductase), c mitochondrial complex III (coenzyme Q cytochrome c oxidoreductase) and d mitochondrial complex IV (cytochrome c oxidase) from skeletal muscle of the experimental rats. Results are presented as the mean ± SD, n = 6 per group. Mean value was significantly different from that of the sham group: *P < 0.05, **P < 0.01. Mean value was significantly different from that of the NPD group: †P < 0.05, ††P < 0.01. Mean value was significantly different from that of the LPD group: ‡P < 0.05. Sham, normal-protein diet; NPD, normal-protein diet; LPD, low-protein diet; LPD + KA, low-protein diet supplemented with ketoacids