挪威田径运动员早期相对年龄效应分析

Abstract Background. Childhood participation in organised sport is one of the strongest predictors of adult physical activity, and the relative age effect (RAE) has recently been linked to lower physical activity and higher sedentary behaviour among schoolchildren. The dominant theoretical account locates RAE generation in adolescent talent-selection cycles, predicting amplification through adolescence. If selection instead occurs before children enter organised sport, the health consequences require intervention at the entry stage rather than at adolescent talent identification. We tested thi