Objectives: Habit has been proposed as an explanation of why prior behavior is a good predictor of later behavior. This study examined whether habit mediates the relationship between prior and later physical activity (PA), within the framework of the attitude-social influences-efficacy (ASE) model and the theory of planned behavior (TPB). Design: A longitudinal design was used. Methods: A total of 1976 older adults completed questionnaires on ASE/TPB constructs and PA at baseline, intention at three months, habit at six months, and PA at twelve months. Results: Path analyses showed that habit significantly mediates the relationship between prior and later PA, after ASE/TPB variables were taken into account. Conclusions: Habit is a partial solution to the question why prior PA is a good predictor of later PA. It is recommended to incorporate habit into the ASE/TPB model.
van Bree, R. J. H., van Stralen, M. M., Mudde, A. N., Bolman, C., de Vries, H., & Lechner, L. (2015). Habit as mediator of the relationship between prior and later physical activity: A longitudinal study in older adults. Psychology of Sport and Exercise, 19, 95-102. https://doi.org/10.1016/j.psychsport.2015.03.006