Figure 1. Changes in TBARS content, activities in SOD, and catalase in rat red gastrocnemius/soleus and white gastrocnemius muscles after acute and chronic exercise, and also after different regimes of intermittent hypoxic training. Groups: 1 (control), 2 (acute exercise), 3 (chronic exercise-CE, 4wk), 4 (intermittent hypoxic training-IHT), 5 (CE-4wk + IHT during the first two weeks), 6 (CH-4wk + IHT during the last two weeks. * p < 0.05 compared with control group, # p < 0.05 compared with chronic exercise group.