Skeletal muscle mitochondrial energy metabolism modulation in ALS untrained and ALS swim-trained mice, based on Desseille et al. [26], Tefera et al. [40] and our results. Black arrows indicate changes observed in skeletal muscle of ALS mice at symptomatic stage of disease vs. ALS 0 or WT. Red arrows indicate swim-training-induced changes in skeletal muscle of ALS mice at symptomatic stage of disease vs. untrained symptomatic ALS mice. ↑—increased; ↓—decreased; --—no changes. CS—citrate synthase, IDH—Isocitrate dehydrogenase, OGDH—2-oxoglutarate dehydrogenase, MDH—malate dehydrogenase, I, II, III, IV—complexes of mitochondrial electron transfer chain.