Figure 2: Evolution of serum MDA (a), SOD (b), uric acid (c), and 3-NT (d) levels between the initial time (8 weeks old) and the final time (20 weeks old) in sedentary control and diabetic rats and in diabetic exercised rats. Data are means ± sem of eight values (rats) per group. Significant differences between sedentary diabetic and sedentary control rats: and . Significant differences between exercised diabetic and sedentary diabetic rats: . MDA, malondialdehyde; SOD, superoxide dismutase; 3-NT, 3-nitrotyrosine.