A 3-year school-based intervention improved physical fitness and reduced the prevalence of overweight and obesity in Italian prepubertal children

BACKGROUND: Schools constitute the ideal setting in which children's physical activity, physical fitness, and health status can improve. However, intervention protocols and their effectiveness vary considerably. The purpose of the study was to investigate the differences in physical fitness and overweight and obesity prevalence between children attending structured physical education classes held by a specialized teacher (EXP) or traditional classes of equal duration held by an ordinary teacher (TRAD).METHODS: Anthropometric and fitness parameters were assessed in a convenience sample of 12,519 1st grade schoolchildren over 3 subsequent school years. Six field-based tests were used to assess physical fitness.RESULTS: Physical fitness improved more in the EXP group than in the TRAD group, except for flexibility (Sit & Reach). At the end of the 3rd year, the EXP children performed better than did the TRAD children (p