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Comparability and feasibility of wrist- and hip-worn accelerometers in free-living adolescents
Journal article   Open access   Peer reviewed

Comparability and feasibility of wrist- and hip-worn accelerometers in free-living adolescents

Joseph J Scott, Alex V Rowlands, Dylan P Cliff, Philip J Morgan, Ronald C Plotnikoff and David R Lubans
Journal of Science and Medicine in Sport, Vol.20(12), pp.1101-1106
2017
DOI: https://doi.org/10.1016/j.jsams.2017.04.017
PMID: 28501418
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Scott et al 2017397.16 kBDownloadView
Accepted VersionCC BY-NC-ND V4.0,  Open Access

Abstract

GENEActiv Perceptions Youth Physical activity Compliance ActiGraph
Objective: To determine the comparability and feasibility of wrist- and hip-worn accelerometers among free-living adolescents. Design: 89 adolescents (age = 13–14 years old) from eight secondary schools in New South Wales (NSW), Australia wore wrist-worn GENEActiv and hip-worn ActiGraph (GT3X+) accelerometers simultaneously for seven days and completed an accelerometry behavior questionnaire. Methods: Bivariate correlations between the wrist- and hip-worn out-put were used to determine concurrent validity. Paired samples t-test were used to compare minutes per day in moderate-to-vigorous physical activity (MVPA). Group means and paired sample t-tests were used to analyze participants’ perceptions of the wrist- and hip-worn monitoring protocols to assist with determining the feasibility. Results: Wrist-worn accelerometry compared favorably with the hip-worn in average activity (r = 0.88, p < 0.001) and MVPA (r = 0.84 p < 0.001, mean difference = 3.54 min/day, SD = 12.37). The wrist-worn accelerometer had 50% fewer non-valid days (75 days, 12%) than the hip-worn accelerometer (n = 152, 24.4%). Participants reported they liked to wear the device on the wrist (p < 0.01), and that it was less uncomfortable (p = 0.02) and less embarrassing to wear on the wrist (p < 0.01). Furthermore, that they would be more willing to wear the device again on the wrist over the hip (p < 0.01). Conclusions: Our findings reveal there is a strong linear relationship between wrist- and hip-worn accelerometer out-put among adolescents in free-living conditions. Adolescent compliance was significantly higher with wrist placement, with participants reporting that it was more comfortable and less embarrassing to wear on the wrist.

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