Reliability and Validity Testing of the MotionWatch 8 in Older Adults

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Background and Purpose:

The purpose of this pilot study was to test the reliability and validity of the MotionWatch 8 with older adults.


Participants wore the MotionWatch 8 for 3 days, completed a diary of activities and the Borg Rating of Perceived Exertion (RPE) scale.


Evidence of reliability and validity was supported because there was no difference in daily level of activity and that recorded physical activity matched the activity counts. There was a significant difference in Borg RPE scale scores between the sedentary group (Borg RPE scale = 8.6, SD = 3.0) and those with some level of activity (Borg RPE scale = 9.9, SD = 2.3; F = 5.72, p = .02).


The findings provide preliminary support for the reliability and validity of the MotionWatch 8 when used with older adults.

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