Cited by 2,677Physical Activity and HealthContext-Aware Activity Recognition SystemsObesity, Physical Activity, Diet

Calibration of two objective measures of physical activity for children

Evenson, Kelly R., Catellier, Diane J., Gill, Karminder, Ondrak, Kristin S., McMurray, Robert G.·2008·Journal of Sports Sciences

Abstract

A calibration study was conducted to determine the threshold counts for two commonly used accelerometers, the ActiGraph and the Actical, to classify activities by intensity in children 5 to 8 years of age. Thirty-three children wore both accelerometers and a COSMED portable metabolic system during 15 min of rest and then performed up to nine different activities for 7 min each, on two separate days in the laboratory. Oxygen consumption was measured on a breath-by-breath basis, and accelerometer data were collected in 15-s epochs. Using receiver operating characteristic curve (ROC) analysis, cutpoints that maximised both sensitivity and specificity were determined for sedentary, moderate and vigorous activities. For both accelerometers, discrimination of sedentary behaviour was almost perfect, with the area under the ROC curve at or exceeding 0.98. For both the ActiGraph and Actical, the discrimination of moderate (0.85 and 0.86, respectively) and vigorous activity (0.83 and 0.86, respectively) was acceptable, but not as precise as for sedentary behaviour. This calibration study, using indirect calorimetry, suggests that the two accelerometers can be used to distinguish differing levels of physical activity intensity as well as inactivity among children 5 to 8 years of age.

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Crossref · 10.1080/02640410802334196

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Authors
Evenson, K. R., Catellier, D. J., Gill, K., Ondrak, K. S., & McMurray, R. G.
Affiliations
University of North Carolina at Chapel Hill (US)
Corresponding author
Evenson, Kelly R.
Venue
Journal of Sports Sciences
Published
2008-12-15
Volume
26
Issue
14
Pages
1557-1565
ISSN
  • 0264-0414 (ISSN-L)
  • 1466-447X
OpenAlex
W2141170928
Cited by
2,677
References
43
Citations by year
2026: 117 · 2025: 155 · 2024: 174 · 2023: 161 · 2022: 229 · 2021: 239 · 2020: 239 · 2019: 256 · 2018: 236 · 2017: 173 · 2016: 204 · 2015: 153 · 2014: 143 · 2013: 101 · 2012: 56
FWCI
8.60
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Sports Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of North Carolina at Chapel Hill
  • National Heart, Lung, and Blood Institute (U01HL066853)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
Keywords
accelerometer calibration, ActiGraph, Actical, physical activity intensity, children, sedentary behavior, oxygen consumption, indirect calorimetry, children aged 5-8
MeSH terms
Calibration, Calorimetry, Indirect, Equipment Design, Exercise Test, Female, Heart Rate, Humans, Male, Motor Activity, Oxygen Consumption, Physical Fitness, ROC Curve, Sensitivity and Specificity, Exercise, Actigraphy

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