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Development of raw acceleration cut-points for wrist and hip accelerometers to assess sedentary behaviour and physical activity in 5-7 year old children

Crotti, M, Foweather, L, Rudd, JR, Hurter, L, Schwarz, S and Boddy, LM Development of raw acceleration cut-points for wrist and hip accelerometers to assess sedentary behaviour and physical activity in 5-7 year old children. Journal of Sports Sciences. ISSN 0264-0414 (Accepted)

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Abstract

The purpose of the study was to validate sedentary behaviour (SB), moderate-to-vigorous physical activity (MVPA) and vigorous physical activity (VPA) accelerometer cut-points for wrist and hip-worn ActiGraph devices in 5-7 year old children. Forty-nine (n=27 girls) 5-7 year-old children were recruited. Participants wore an ActiGraph GT9X accelerometer, recording data at 100Hz subsequently downloaded in 1s epochs, on both wrists and the right hip during a standardised protocol (10 tasks ranging from lying to running), and during recess. Cut-points were generated using ROC analysis using direct observation as a criterion reference in the cut-point generation group (n=22, 50% girls). Subsequently, cut-points were modified using Confidence intervals equivalency analysis until optimal cut-points were identified. Cut-points were then cross-validated using a cross-validation group (n=10, 60% girls). SB cut-points were 36mg (Sensitivity(Sn)=79.8%, Specificity(Sp)=56.8%) for non-dominant wrist, 39mg (Sn=75.4%, Sp=70.2%) for dominant wrist and 20mg (Sn=78%, Sp=50.1%) for hip. MVPA cut-points were 189mg (Sn=82.6%, Sp=78%) for non-dominant wrist, 181mg (Sn=79.1%, Sp=76%) for dominant wrist and 95mg (Sn=79.3%, Sp=75.6%) for hip. VPA cut-points were 536mg (Sn=75.1%, Sp=68.7%) for non-dominant wrist, 534mg (Sn=67.6%, Sp=95.6%) for dominant wrist and 325mg (Sn=78.2%, Sp=96.1%) for hip. All accelerometer placements demonstrated adequate levels of accuracy for SB and PA assessment.

Item Type: Article
Uncontrolled Keywords: 1106 Human Movement and Sports Sciences, 1302 Curriculum and Pedagogy
Subjects: R Medicine > RJ Pediatrics
R Medicine > RJ Pediatrics > RJ101 Child Health. Child health services
G Geography. Anthropology. Recreation > GV Recreation Leisure > GV561 Sports
Divisions: Sports & Exercise Sciences
Publisher: Taylor & Francis
Date Deposited: 14 Feb 2020 13:04
Last Modified: 14 Feb 2020 13:15
URI: http://researchonline.ljmu.ac.uk/id/eprint/12253

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