Hon K. Yuen, Ed Wang, Katy Holthaus, Laura K. Vogtle, David Sword, Hazel L. Breland, Diane L. Kamen; Self-Reported Versus Objectively Assessed Exercise Adherence. Am J Occup Ther 2013;67(4):484–489. https://doi.org/10.5014/ajot.2013.007575
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OBJECTIVE. We examined agreement of data between self-reported and objectively assessed exercise adherence among women with systemic lupus erythematosus.
METHOD. Eleven participants completed weekly exercise logs on date and duration of exercise during a 10-wk Wii Fit™ home-based program. Afterward, exercise data from the log were compared with those recorded in the Wii console.
RESULTS. Of the paired data, the mean duration of exercise recorded in the Wii was 29.5 min and that recorded in the log was 33.3 min. The composite intraclass correlation for exercise duration between exercise log and the Wii Fit was 0.4. The 95% limits of agreement indicated large between-subjects variability.
CONCLUSION. Exercise logs exhibit a marginally acceptable agreement with Wii estimation of exercise duration at a group level. However, caution should be applied when using the exercise log as a measure of a person’s exercise behavior because of the tendency to overreport.
On the basis of this study’s findings, frequency of exercise documented in the log seems reasonably accurate (although underrecorded), but the main concern is overreporting of exercise duration.
If the goal is to check whether patients adhere to frequency of exercise, exercise logs seem an appropriate way to track this exercise parameter and obtain a rough estimation (an underestimation) of their adherence. However, long-term tracking without monitoring is required to confirm this study’s findings.
If the goal is to track exercise duration, the group mean exercise duration is acceptable, but individual recording of sessions tends to be overreported.
Clinicians and researchers should be mindful of overreporting when selecting exercise logs to document duration of exercise. Incorporating appropriate strategies to assist patients in keeping track of the duration of exercise is recommended when using exercise logs.
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