Changes in Pulmonary Functions in Individuals with or without Past Medical Histories of Bronchial Asthma during Physical Education Classes in Summer and Winter

The purpose of this study was to investigate changes in pulmonary functions in individuals with past medical histories of bronchial asthma in physical education classes in summer and winter. Twenty-nine Japanese healthy male students (18.2±0.5 years) with a past medical history of bronchial asthma (Asthma group) and twenty-one control (Non-asthma group) students (18.4±0.5 years) volunteered to play a basketball game in summer (10 minutes) and a soccer game in winter (15 minutes) in physical education classes, in a national college, 2010～2012. The participants' indices of objective pulmonary functions FEV1.0 (forced expiratory volume in one second), FEV1.0%fall (the percent fall in FEV1.0) were measured before the game (Rest) and at the time 5 minutes after each game (Rec. 5). The temperature of classroom was controlled 25-28°C throughout the year.