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

Hurter, L; Fairclough, SJ; Knowles, ZR; Porcellato, LA; Cooper-Ryan, AM; Boddy, LM

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.

Citation

Hurter, L., Fairclough, S., Knowles, Z., Porcellato, L., Cooper-Ryan, A., & Boddy, L. (2018). Establishing raw acceleration thresholds to classify sedentary and stationary behaviour in children. Children, 5(12), 172. https://doi.org/10.3390/children5120172

• 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
• 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