Temporal sequencing of physical activity change constructs within the transtheoretical model
Objective: Studies support the Transtheoretical Model's (TTM) ability to describe behavior change processes and guide interventions; however, the temporal sequencing of constructs is less understood. This cohort study tested five sequences to identify TTM construct changes related to physical activity. Methods: A random sample provided baseline data (n = 689; 63% female; Mage (SD) = 47(17); 37% white), with 401 participants providing 24-month data, at six-month intervals. Results: Structural equation models revealed processes to cognitions to stage (AIC = 29313.093, BIC = 29514.883, CFI = 0.999, RMSEA = 0.006, SRMR = 0.026); processes to stage to cognitions (AIC = 27788.651, BIC = 27973.268, CFI = 0.978, RMSEA = 0.024, SRMR = 0.038), self-efficacy/temptations to processes to decisional balance to stage (AIC = 13914.771, BIC = 14031.169, CFI = 0.981, RMSEA = 0.018, SRMR = 0.034), and stage to processes to cognitions (AIC = 22048.324, BIC = 22212.986, CFI = 0.976, RMSEA = 0.026, SRMR = 0.029) all fit well. However, cognitions to processes to stage did not fit the data well (AIC = 10353.555, BIC = 10444.179, CFI = 0.937, RMSEA = 0.038, SRMR = 0.035). Conclusions: Integrating results revealed a cyclical model so that intervention efforts should focus on processes to change cognitions related to barrier self-efficacy and decisional balance, which then lead to change in stage and then renew focus on the processes.
Psychology of Sport and Exercise
Nigg, C., Harmon, B., Jiang, Y., Martin Ginis, K., Motl, R., & Dishman, R. (2019). Temporal sequencing of physical activity change constructs within the transtheoretical model. Psychology of Sport and Exercise, 45 https://doi.org/10.1016/j.psychsport.2019.101557