%0 Journal Article
%T Effect of a moderate-intensity demonstration walk on accuracy of physical activity self-report.
%A Larsen BA
%A Carr LJ
%A Dunsiger S
%A Marcus BH
%J J Exerc Sci Fit
%V 15
%N 1
%D Jun 2017
%M 29541123
%F 3.465
%R 10.1016/j.jesf.2016.10.002
%X <B>OBJECTIVE: </B>Providing a demonstration of a 10-minute bout of moderate-to-vigorous intensity physical activity (MVPA) immediately prior to subjective reporting of MVPA could influence self-reported activity by calibrating both duration and intensity. We assessed the effect of a demonstration of MVPA on subsequent MVPA recall, and explored whether this improved agreement with objective measures of MVPA.<BR><B>METHODS: </B>A total of 846 individuals participated in four different physical activity interventions; two of which included a 10-minute moderate-intensity demonstration walk on a treadmill at baseline and 6-month visits immediately prior to reporting MVPA. Participants from three studies also wore accelerometers during the week overlapping with self-reported MVPA.<BR><B>RESULTS: </B>Overall, those completing the demonstration walk reported significantly fewer minutes of MVPA per week at baseline (b = -11.69, standard error = 2.53, p < 0.01). The effect of the demonstration walk at 6 months was not significant (p = 0.06). Correlations with accelerometers at baseline were higher in the two studies with the demonstration walk (ρ = 0.28, 0.26) than the study without (ρ = 0.04). Correlations with accelerometers increased overall from baseline to follow-up.<BR><B>CONCLUSIONS: </B>A 10-minute demonstration of MVPA was associated with reporting fewer minutes of MVPA and improved agreement with objective PA measures at baseline. These findings support combining self-report PA assessments with hands-on MVPA demonstrations.