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Discrepancies in accelerometer-measured physical activity in children due to cut-point non-equivalence and placement site

Routen, A.C.; Upton, D.; Edwards, M.G.; Peters, D.M.

Discrepancies in accelerometer-measured physical activity in children due to cut-point non-equivalence and placement site Thumbnail


Authors

A.C. Routen

D. Upton

M.G. Edwards

D.M. Peters



Abstract

This study examined dissonance in physical activity (PA) between two youth-specific hip-derived intensity cut-points for the Actiwatch (AW), and compared PA between hip and wrist placements using site-specific cut-points. Twenty-four children aged 11.2 ± 0.5 years wore the AW on the right hip and non-dominant wrist during a typical school day. Minutes of sedentary behaviour and vigorous activity were greater using Puyau et al. (2002) cut-points, but light, moderate, and moderate-to-vigorous (MVPA) were greater when derived using Puyau et al. (2004) cut-points (P < 0.01). Total hip activity counts were lower than wrist. Sedentary minutes were greater at the hip, but minutes of light, vigorous and MVPA were lower (P < 0.01). Moderate minutes were greater at the hip, but differed only when applying the Puyau et al. (2004) cut-points (P < 0.01). In conclusion, data comparisons between two hip derived AW cut-points and between hip and wrist data are inappropriate. Future researchers using the AW at the hip should present data reduced using both published cut-points. As hip and wrist data differ, the wrist placement is preferable as it will likely increase children's compliance to monitoring protocols due to reduced obtrusiveness compared to the hip.

Citation

Routen, A., Upton, D., Edwards, M., & Peters, D. (2012). Discrepancies in accelerometer-measured physical activity in children due to cut-point non-equivalence and placement site. Journal of Sports Sciences, 30(12), 1303-1310. https://doi.org/10.1080/02640414.2012.709266

Journal Article Type Article
Publication Date Aug 1, 2012
Deposit Date Feb 8, 2013
Publicly Available Date Feb 4, 2014
Journal Journal of Sports Sciences
Print ISSN 0264-0414
Electronic ISSN 1466-447X
Publisher Taylor and Francis Group
Peer Reviewed Peer Reviewed
Volume 30
Issue 12
Pages 1303-1310
DOI https://doi.org/10.1080/02640414.2012.709266
Keywords Body site, Motion sensor, Intensity thresholds, Participant compliance, Actiwatch.

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