| Autor: |
Mailey EL; Dept. of Kinesiology, Kansas State University, Manhattan, KS., Gothe NP, Wójcicki TR, Szabo AN, Olson EA, Mullen SP, Fanning JT, Motl RW, McAuley E |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of aging and physical activity [J Aging Phys Act] 2014 Apr; Vol. 22 (2), pp. 255-60. Date of Electronic Publication: 2013 May 22. |
| DOI: |
10.1123/japa.2013-0021 |
| Abstrakt: |
The criteria one uses to reduce accelerometer data can profoundly influence the interpretation of research outcomes. The purpose of this study was to examine the influence of 3 different interruption periods (i.e., 20, 30, and 60 min) on the amount of data retained for analyses and estimates of sedentary time among older adults. Older adults (N = 311, M age = 71.1) wore an accelerometer for 7 d and reported wear time on an accelerometer log. Accelerometer data were downloaded and scored using 20-, 30-, and 60-min interruption periods. Estimates of wear time, derived using each interruption period, were compared with self-reported wear time, and descriptive statistics were used to compare estimates of sedentary time. Results showed a longer interruption period (i.e., 60 min) yields the largest sample size and the closest approximation of self-reported wear time. A short interruption period (i.e., 20 min) is likely to underestimate sedentary time among older adults. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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