Journal of Rehabilitation Research & Development (JRRD)

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Sampling frequency impacts measurement of walking activity after stroke

Brian Knarr, PhD, et al.

Lack of physical activity has serious health and functional consequences for people after a stroke. Therefore, interventions to improve activity after a stroke and accurate methods to measure activity are needed. This study examined how the length of the interval over which activity data are sampled affects the measurement of activity. The results showed that the length of the sampling interval can result in either overestimating or underestimating activity. Such overestimation and underestimation is worse when activity is low, which could affect the interpretation of comparisons between groups of people with very different activity amounts.

Volume 50 Number 8, 2013
   Pages 1107 — 1112

View HTML  ¦  View PDF  ¦  Contents Vol. 50, No. 8
This article and any supplemental materials should be cited as follows:
Knarr B, Roos MA, Reisman DS. Sampling frequency impacts measurement of walking activity after stroke. J Rehabil Res Dev. 2013;50(8):1107–12.

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Last Reviewed or Updated  Wednesday, December 11, 2013 9:38 AM

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