Incorporating Behavior Change Strategies Into an Exercise Trial to Improve Physical Activity Maintenance Among Adults at High Risk for Type II Diabetes

Abstract

This study examined the feasibility and effects of a 1-hr physical activity (PA) behavior change (PABC) discussion session on PA, 12 weeks after completing an exercise trial. Adults at high risk of Type II diabetes were randomized to the PABC or a control group. PA was self-reported using the International Physical Activity Questionnaire. Chi-square tests compared the proportion of participants classified as moderately active or greater at the 12-week follow-up. Participants (N = 50) were M = 61.8 ± 5.5 years old and mostly female (80%). All participants completed the PABC discussion session, and compliance with the International Physical Activity Questionnaire at 12-week follow-up was 78%. Barrier self-efficacy increased immediately following the PABC (MΔ0.5 ± 0.9; t(22) = −2.45, p = .023). At 12-week follow-up, 88% in the PABC were moderately active or greater, compared with 50% in the control (p = .015). Incorporating a PABC discussion session as part of an exercise efficacy trial was feasible and may help improve PA maintenance.