title: Evaluation of low-cost, objective instruments for assessing physical activity in 10-11-year-old children.
abstract: This study compared step counts detected by four, low-cost, objective, physical-activity-assessment instruments and evaluated their ability to detect moderate-to-vigorous physical activity (MVPA) compared to the ActiGraph accelerometer (AG). Thirty-six 10-11-year-old children wore the NL-1000, Yamax Digiwalker SW 200, Omron HJ-151, and Walk4Life MVP concurrently with the AG during school hours on a single day. AG MVPA was derived from activity count data using previously validated cut points. Two of the evaluated instruments provided similar group mean MVPA and step counts compared to AG (dependent on cut point). Low-cost instruments may be useful for measurement of both MVPA and steps in children's physical activity interventions and program evaluation.
authors.affiliation: Department of Human Movement Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53201-0413, USA. teresalhart@gmail.com
authors.forename: Teresa L
authors.initials: TL
authors.lastname: Hart
authors.forename: Timothy
authors.initials: T
authors.lastname: Brusseau
authors.forename: Pamela Hodges
authors.initials: PH
authors.lastname: Kulinna
authors.forename: James J
authors.initials: JJ
authors.lastname: McClain
authors.forename: Catrine
authors.initials: C
authors.lastname: Tudor-Locke
mesh_terms: D000054:Acceleration; D000704:Analysis of Variance; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D018670:Monitoring, Ambulatory / Q000191:economics / Q000295:instrumentation*; D016138:Walking / Q000502:physiology*