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Effects of exercise and/or Epi on myocardial MMP-2 and MMP-9 protein (A) or activity (B) levels as assessed by Western blots and gelatin zymography, respectively. From water (W), exercise (Ex), epicatechin (Epi) and epicatechin plus exercise (Epi-Ex) groups. GAPDH was used as a loading control in the Western blot analysis. Mean ± SE relative to W group (100%) values. *p < 0.05 vs. water; **significantly different from Ex or Epi.
