Crotti, M, Foweather, L, Rudd, JR, Hurter, L, Schwarz, S and Boddy, LM (2020) 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, 38 (9). pp. 1036-1045. ISSN 0264-0414

Preview	Text Development of raw acceleration cut-points for wrist and hip accelerometers to assess sedentary behaviour and physical activity in 5-7 year old children.pdf - Accepted Version Download (641kB) | Preview
Preview	Text Figures 1-4.pdf - Supplemental Material Download (231kB) | Preview
Preview	Text Supplementary Material 2.pdf - Supplemental Material Download (477kB) | Preview
	Spreadsheet Supplementary Material 1.xlsx - Supplemental Material Download (30kB)

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
Additional Information:	This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Sports Sciences on 30 Mar 2020, available online: http://www.tandfonline.com/10.1080/02640414.2020.1740469
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:	Sport & Exercise Sciences
Publisher:	Taylor & Francis
Date Deposited:	14 Feb 2020 13:04
Last Modified:	13 Jan 2022 11:30
DOI or ID number:	10.1080/02640414.2020.1740469
URI:	https://researchonline.ljmu.ac.uk/id/eprint/12253

View Item