Understanding Physical Activity Intention in Canadian School Children and Youth: An Application of the Theory of Planned Behavior.

Investigated how well the theory of planned behavior could predict students' physical activity intention. Surveys indicated that direct measures of the theory of planned behavior explained 47 percent of variability in the measure of physical activity intention. Differences surfaced in the relative contributions of three predictors (attitude, subjective norm, and perceived behavioral control) across grade and grade-by-grade subgroups. (SM)