Vicarious Experience to Affect Physical Activity in Women: A Randomized Control Trial.
Sheri A Rowland, Marlene Z Cohen, Carol H Pullen and 5 others
PMID 31204610WHAT IT FOUND
The peer-model workplace program did not improve women's confidence for physical activity, motivation, or comparison thinking more than the control program over 12 weeks.
Confidence fell in both groups, and some comparison motives rose without a clear group difference.
Key findings
01No significant group-by-time differences were found for self-efficacy for physical activity, motivation, or comparative thinking.
02Over time, self-efficacy for physical activity scores fell in both groups, while motivation scores remained stable.
03Both groups increased comparisons for distancing, similarity identification, and self-enhancement; four comparison areas showed notable but non-significant group differences.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The analysed sample was only 22 control and 21 intervention participants after drop-out. The study was done at a single Midwestern health system with mostly Caucasian women, so it may not apply to other workplaces or groups. Drop-out was higher in the intervention group than the control group. The advanced practice nurse who completed physical assessments was not blinded to group assignment. The study used a p value threshold of less than 0.10 because it was preliminary. Motivation was measured with three investigator-developed items. The social comparison motive scale was originally validated for pregnancy prevention in adolescents, not physical activity in adults. The participants were physically inactive women employed at a health system.
Declared interests
The authors declared no potential conflicts of interest. The supplied metadata lists NIH extramural and non-U.S. government research support, but the article text does not state whether the sponsor designed the study or wrote the manuscript.
The easy way to misread this
Do not conclude that peer modeling increased physical activity, fitness, or psychological outcomes. The current trial found no significant group-by-time differences in self-efficacy, motivation, or comparison thinking, and the fitness findings are described as not significant and come from a prior pilot report. The study also used a p value threshold of less than 0.10 for a preliminary design.