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Exercise‐increased metalloproteinases in the diaphragms of mdx mice. Zymographic analysis of metalloproteinases obtained from the diaphragm muscles of control (sedentary, Sed) and exercised mdx mice. The graphs show the activity level of pro‐MMP‐2, pre‐MMP‐2 and active MMP‐2. Data are presented as the mean ± SD. *Significantly different from sedentary mice (P < 0.05).
