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Mean percentage change in PEFR at 0–3, 10, and 20 min postexercise in all participants (A) and stratified by sex (B). Data are shown as mean values. P‐values were calculated using the Mann‐Whitney U test. The P‐values for the mean percentage changes in PEFR in girls vs those in boys at 0, 3, 10, and 20 min postexercise were 0.432, 0.924, 0.378, and 0.099, respectively. PEFR, peak expiratory flow rate
