Self-regulatory efficacy and long-term physical activity engagement: Examining mediators from a randomized trial

The purpose of this study was to examine self-regulatory efficacy (SRE) as an explanatory mediator of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) interventions in relation to physical activity levels over 6- and 12-months after condition assignment. Two mediation models were run. The first model explored initial change in the first 6 months by examining 6-month SRE as a mediator of the relations...