• planned behavior;
  • attitude;
  • subjective norm;
  • perceived control;
  • intention;
  • exercise;


The purpose of this study was to identify cognitive predictors of blue-collar workers' (N = 468) intention to exercise and their self-reported exercise behavior. The theory of planned behavior (TPB) provided the framework for the study. A cross-sectional sample of skilled and unskilled workers from the physical facilities department of a large, Midwestern state university completed a questionnaire containing measures of attitude, subjective norm, perceived behavioral control, intention, and self-reported leisure exercise behavior. Structural equation modeling demonstrated that workers' attitude toward exercise and perceived behavioral control explained 61.7% of the variance of intention, whereas intention and perceived behavioral control explained 51.3% of the variance of exercise behavior. Subjective norm was not a significant predictor of intention to exercise. The findings support the use of the TPB in identifying cognitive factors that explain exercise behavior and suggest that interventions to promote exercise behavior in blue-collar workers should address their attitude toward exercise and their perceptions of behavioral control. © 2001 John Wiley & Sons, Inc. Res Nurs Health 24:481–493, 2001