Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children
AbstractThis 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. View Full-Text
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Hurter, L.; Fairclough, S.J.; Knowles, Z.R.; Porcellato, L.A.; Cooper-Ryan, A.M.; Boddy, L.M. Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children. Children 2018, 5, 172.
Hurter L, Fairclough SJ, Knowles ZR, Porcellato LA, Cooper-Ryan AM, Boddy LM. Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children. Children. 2018; 5(12):172.Chicago/Turabian Style
Hurter, Liezel; Fairclough, Stuart J.; Knowles, Zoe R.; Porcellato, Lorna A.; Cooper-Ryan, Anna M.; Boddy, Lynne M. 2018. "Establishing Raw Acceleration Thresholds to Classify Sedentary and Stationary Behaviour in Children." Children 5, no. 12: 172.
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