Establishing raw acceleration thresholds to classify sedentary and stationary behaviour in children

Hurter, L, Fairclough, SJ, Knowles, ZR, Porcellato, LA, Cooper-Ryan, AM ORCID: https://orcid.org/0000-0002-8305-8587 and Boddy, LM 2018, 'Establishing raw acceleration thresholds to classify sedentary and stationary behaviour in children' , Children, 5 (12) , p. 172.

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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.

Item Type: Article
Schools: Schools > School of Health and Society > Centre for Health Sciences Research
Journal or Publication Title: Children
Publisher: MDPI
ISSN: 2227-9067
Related URLs:
Depositing User: AM Cooper-Ryan
Date Deposited: 20 Dec 2018 12:50
Last Modified: 20 Dec 2018 15:31
URI: http://usir.salford.ac.uk/id/eprint/49576

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