A, VDAC content was similar between groups (YA, n = 11; OA, n = 10; OI, n = 8; VOI, n = 8; exact Wilcoxon rank sum). Although there were no differences in complexes I (B) and II (C), complex III Core II subunit content was lower in VOI compared to OI participants (D). Complexes IV (E) and V (F) also showed no changes (YA, n = 11; OA, n = 10; OI, n = 8; VOI, n = 8; exact Wilcoxon rank sum, P = 0.04).