Fig. 2.

Quantification of the relative contribution of several mitochondrial sites to superoxide and H₂O₂production in isolated rat skeletal muscle mitochondria assessed in a media mimicking conditions of rest, mild aerobic exercise, and intense aerobic exercise. The authors applied corrections for H₂O₂ losses due to degradation by mitochondrial matrix peroxidases. Error bars in inverted position denote the propagated errors for each site while regular error bars indicate the propagated sum of these errors. Values are means ± S.E. (error bars) (n = 3–20). Modified from Goncalves et al. [5].