Liezel Hurter
Establishing raw acceleration thresholds to classify sedentary and stationary behaviour in children
Hurter, Liezel; Fairclough, SJ; Knowles, ZR; Porcellato, LA; Cooper-Ryan, AM; Boddy, Lynne
Authors
SJ Fairclough
ZR Knowles
LA Porcellato
Mrs Anna Cooper-Ryan A.M.Cooper-Ryan@salford.ac.uk
Head of Public Health
Lynne Boddy
Abstract
This study aimed to: (1) compare acceleration output between ActiGraph (AG) hip and wrist monitors and GENEActiv (GA) wrist monitors; (2) identify raw acceleration sedentary and stationary thresholds for the two brands and placements; and (3) validate the thresholds during a free-living period. Twenty-seven from 9- to 10-year-old children wore AG accelerometers on the right hip, dominant- and non-dominant wrists, GA accelerometers on both wrists, and an activPAL on the thigh, while completing seven sedentary and light-intensity physical activities, followed by 10 minutes of school recess. In a subsequent study, 21 children wore AG and GA wrist monitors and activPAL for two days of free-living. The main effects of activity and brand and a significant activity × brand × placement interaction were observed (all p < 0.0001). Output from the AG hip was lower than the AG wrist monitors (both p < 0.0001). Receiver operating characteristic (ROC) curves established AG sedentary thresholds of 32.6 mg for the hip, 55.6 mg and 48.1 mg for dominant and non-dominant wrists respectively. GA wrist thresholds were 56.5 mg (dominant) and 51.6 mg (non-dominant). Similar thresholds were observed for stationary behaviours. The AG non-dominant threshold came closest to achieving equivalency with activPAL during free-living.
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 17, 2018 |
Online Publication Date | Dec 19, 2018 |
Publication Date | Dec 19, 2018 |
Deposit Date | Dec 20, 2018 |
Publicly Available Date | Dec 20, 2018 |
Journal | Children |
Electronic ISSN | 2227-9067 |
Publisher | MDPI |
Volume | 5 |
Issue | 12 |
Pages | 172 |
DOI | https://doi.org/10.3390/children5120172 |
Publisher URL | https://doi.org/10.3390/children5120172 |
Related Public URLs | https://www.mdpi.com/journal/children |
Files
Hurter et al 2018 Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children.pdf
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Licence
http://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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