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Effects of exercise on electron transport chain activity in sub-sarcolemmal (SS) and inter-myofibrillar (IMF1 and IMF2) mitochondrial fractions. Skeletal muscle succinate oxidase activity in SS and IMF fractions of skeletal muscle before (gray bars) and after (black bars) exercise. Data are presented as means ± standard error of the mean; n=8; SS; CK, activity of creatine kinase; * denotes significant change from Pre-intervention assessed by paired t-test, P<0.01.
