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To analyze the influence of procyanidin contained foods on changes of antioxidant indexes and endogenous substances of athletes, this study selected 16 athletes and divides them into the control group (A) and the experiment group (B). Having taken procyanidin contained medicines for two weeks; athletes in B took centrifugal exercise with heavy intensity to establish the model of Delayed Onset Muscle Soreness (DOMS). Pain threshold with subject feelings and blood IL-6, T-AOC, SOD and MDA were measured at different time points. The measurement showed that after exercise, pain thresholds in A, B at different time points decreased remarkably; while at a same time point, pain threshold in A was lower than that in B. In both groups, post-exercise blood IL-6 increased first and then decreased and reached its peak immediately after exercise; SOD activity also increased first and decreased later and MDA rose up to its apex and then went down. As for the same time point comparison, IL-6 in A was significantly higher than in B, so did MDA; but SOD in A was notably lower than in B. Thus the conclusion is that procyanidin controls IL-6 to relieve DOMS after centrifugal exercise with heavy intensity, which effectively enhances oxidation resistance of organism.

Influence of Procyanidin Contained Foods on Changes of Antioxidant Indexes and Endogenous Substances of Athletes