A randomized controlled trial of single versus multiple health behavior change: promoting physical activity and nutrition among adolescents. |
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| Authors: | Judith J Prochaska James F Sallis |
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| Affiliation: | Joint Doctoral Program in Clinical Psychology, San Diego State University, San Diego, CA, USA. jodijpr@itsa.ucsf.edu |
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| Abstract: | Targeting multiple behaviors for change may provide significant health benefits. This study compared interventions targeting physical activity and nutrition (PAN) concurrently versus physical activity (PA) alone. Adolescents (N=138) were randomized to the PAN or PA intervention or control condition (n=46 per group). Primary outcomes were change in PA accelerometer and 3-day dietary recording from baseline to 3-month follow-up. The PAN and PA interventions were efficacious in supporting boys' (p<.001) but not girls' (p=.663) PA relative to the control condition. Dietary change was minimal. Although the findings do not reveal a decrement to PA promotion when a nutrition intervention was added, neither do they reveal any additional benefit. More studies comparing single versus multibehavioral interventions are needed. |
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