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Published on: March 7, 2019
Does tailoring on additional theoretical constructs enhance the efficacy of a print-based physical activity promotion
David M Williams1, George D Papandonatos, Ernestine G Jennings
1Department of Community Health, Brown University, Providence, RI 02912, USA. david_m_williams@brown.edu
Objective:
To enhance a previously efficacious individually tailored physical activity (PA) promotion intervention by adding theoretical constructs to the tailored feedback.
Design:
We randomly assigned 248 healthy, underactive (moderate to vigorous physical activity [MVPA] min/week < 90) adults (mean age = 48.8 years, SD = 10.0) to receive either (a) a theoretically tailored (based on 5 constructs from the transtheoretical model and social-cognitive theory [SCT]) print-based PA promotion intervention (print) or (b) the same theoretically tailored print-based PA promotion intervention plus enhanced tailoring addressing 5 additional SCT constructs (enhanced print).
Main Outcome Measure:
The 7-day physical activity recall administered at baseline, Month 6, and Month 12, with outcomes operationalized as percentage achieving 150 min/week of MVPA.
Results:
When controlling for covariates, there was a nonsignificant trend in favor of the enhanced print condition reflecting 46% and 50% greater odds of achieving 150 min/week of MVPA at Month 6 and Month 12, respectively.
Conclusion:
Enhanced tailoring based on additional theoretical constructs may result in marginal improvements in physical activity outcomes.
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