Calibration and evaluation of an objective measure of physical activity in pre-school children

Sirard, John R., Trost, Stewart G., Pfeiffer, Karin A., Dowda, Marsha and Pate, Russell R. (2005) Calibration and evaluation of an objective measure of physical activity in pre-school children. Journal of Physical Activity and Health, 2 3: 345-347.

Author Sirard, John R.
Trost, Stewart G.
Pfeiffer, Karin A.
Dowda, Marsha
Pate, Russell R.
Title Calibration and evaluation of an objective measure of physical activity in pre-school children
Journal name Journal of Physical Activity and Health   Check publisher's open access policy
ISSN 1543-3080
1543-5474
Publication date 2005-07
Sub-type Critical review of research, literature review, critical commentary
Volume 2
Issue 3
Start page 345
End page 347
Total pages 3
Place of publication Champaign, IL, United States
Publisher Human Kinetics Publishers
Language eng
Subject 1106 Human Movement and Sports Science
Formatted abstract
Background:
The purposes of this study were 1) to establish accelerometer count cutoffs to categorize activity intensity of 3 to 5-y old-children and 2) to evaluate the accelerometer as a measure of children’s physical activity in preschool settings.

Methods:

While wearing an ActiGraph accelerometer, 16 preschool children performed five, 3-min structured activities. Receiver Operating Characteristic (ROC) curve analyses identified count cutoffs for four physical activity intensities. In 9 preschools, 281 children wore an ActiGraph during observations performed by three trained observers (interobserver reli-ability = 0.91 to 0.98).

Results:
Separate count cutoffs for 3, 4, and 5-y olds were established. Sensitivity and specificity for the count cutoffs ranged from 86.7% to 100.0% and 66.7% to 100.0%, respectively. ActiGraph counts/15 s were different among all activities (P < 0.05) except the two sitting activities. Correlations between observed and ActiGraph intensity categorizations at the preschools ranged from 0.46 to 0.70 (P < 0.001).

Conclusions:

The ActiGraph count cutoffs established and validated in this study can be used to objectively categorize the time that preschool-age children spend in different physical activity intensity levels.
Keyword Accelerometer
Measurement
Young children
Validity
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
 
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