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Pre- and postsupplementation fall in FEV1 after 6 min of EVH of dry air in youth elite soccer players supplemented for 8 wk with CM (squares) or a placebo (circles). Open symbols represent atopic players, and closed symbols represent nonatopic players. Individual and mean values (with 95% confidence intervals) are shown. When atopic players only were analyzed, the P value for the within-group difference in the placebo group was significant at 0.041.
