A study of predictors of adolescents’ physical activity intentions

The present study used an integrated theoretical framework based on the Theory of Planned Behaviour and the Prototype/Willingness model to examine the social cognitive predictors of leisure time physical activity intentions among Greek secondary school students (N = 254, M age = 13.59 years, SD = 1.18). A cross-sectional survey method was employed to assess physical activity intentions and related psychosocial beliefs, as well as self-reported physical activity behaviour. Multiple regression analysis indicated that leisure time physical activity intentions were predicted by past behaviour, perceived behavioural control, and anticipated regret. Prototype similarity and favourability, and descriptive norms did not predict intentions. The findings are discussed in terms of the utility of the planned behaviour and prototype/willingness approaches to explain leisure time physical activity among young people