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Changes in superoxide dismutase (SOD; A) and catalase (B) activity in the red gastrocnemius (RG) muscle. Values are means ± SE (n = 6–8). #Significant difference between 20- and 40-wk values within respective animal group (P < 0.01). †Significantly different from OLETF-EX at respective age (P < 0.05). *Significantly different from LETO-SED at respective age (P < 0.05).
