Background In recent years, researchers have begun applying a trajectory approach to
identify homogeneous subgroups of physical activity (PA) in heterogeneous populations …

Background Taking regular exercise may help people give up smoking by moderating
nicotine withdrawal and cravings, and by hel** to manage weight gain. Objectives To …

Despite increased focus on the effects of organized activities on youth development, there is
currently no consensus about the best way to assess various dimensions of involvement …

Our understanding of longitudinal patterns of adolescent smoking development and the
determinants of these patterns is limited. The present study evaluated adolescent smoking …

The purpose of this article is to examine the current health promotion orientation of youth
sports clubs in Finland in view of the standards created previously for the health promoting …

Substance use (eg, alcohol, marijuana, opioids, cocaine., etc,) use often initiates during
adolescence, a critical period of physiological and social development marked by an …

This longitudinal study examined psychopathology as a predictor and outcome of organized
activity involvement during high school among 198 adolescents who varied in risk for …

This chapter is intended to draw together some of the issues raised in this book. First, salient
features associated with instructional sport programs are discussed with a view to identifying …

The purpose of this manuscript is to provide a review of some key quantitative methods that
are relevant to contemporary quantitative research in sport and exercise psychology. To …

Objective: Previous research has indicated an association between smoking and
depression in adolescents, although the nature of the relationship is controversial. We …