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. 2011 Jul 18;60(8):2051–2060. doi: 10.2337/db11-0121

FIG. 2.

FIG. 2.

Effect of exercise training on the production of ATP by isolated human skeletal muscle mitochondria. Mitochondrial ATP production was measured during state 1 (no added substrates) and in the presence of respiratory substrates/inhibitors succinate plus rotenone (S/R), glutamate plus malate (G/M), and pyruvate plus malate (P/M) in (A) older (NGT + IGT) subjects before and after exercise, (B) older subjects with NGT before and after exercise, (C) older subjects with IGT before and after exercise, and (D) younger subjects before and after exercise. Data are means ± SE. *P < 0.05 vs. before exercise of respective group.