A new approach for the analysis of accelerometer data measured on preschool children

Oliver, Melody, Schluter, Philip John and Schofield, Grant (2011) A new approach for the analysis of accelerometer data measured on preschool children. Journal of Physical Activity and Health, 8 2: 296-304.

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Author Oliver, Melody
Schluter, Philip John
Schofield, Grant
Title A new approach for the analysis of accelerometer data measured on preschool children
Journal name Journal of Physical Activity and Health  (ERA 2012 Listed)    (ERA 2010 Rank B)   Check publisher's open access policy
Publication date 2011-02
Sub-type Article
Volume number 8
Issue number 2
ISSN 1543-3080
1543-5474
Start page 296
End page 304
Total pages 9
Place of publication Champaign, IL, United States
Publisher Human Kinetics
Collection year 2012
Language eng
Formatted abstract Background:
Accelerometers are widely used to quantify physical activity (PA) in preschoolers, yet no 'best practice' method for data treatment exists. The purpose of this study was to develop a robust method for data reduction using contemporary statistical methods and apply it to preschoolers' accelerometer data.

Methods:
Children age 2 to 5 years were recruited in Auckland, New Zealand, and asked to wear accelerometers over 7 days. Average daily PA rates per second were derived for participants, estimated using negative binomial generalized estimating equation (GEE) models. Overall participant rates were derived and compared using normal GEE models. Descriptive information for data analyzed were compared with that derived using traditional data inclusion approaches.

Results:
Data were gathered from 78 of the 93 enrolled children over a median of 7 days. Daily PA rates ranged from 1.27 to 17.64 counts per second (median 5.70). Compared with traditional approaches, this method had many advantages, including improved data retention, the computation of a continuous measure, and facilitating powerful multivariable regression analyses, while providing similar descriptive information to existing methods.

Conclusion:
PA rates were successfully calculated for preschoolers' activity description and advantages of the approach identified. This method holds promise for future use and merits further application and enhancement. © 2011 Human Kinetics, Inc.
Keyword Accelerometry
Measurement
Methods
Motion sensors
Physical activity assessment
Youth
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Issue Theme: Physical Activity in Children and Adolescents: Assessment and Determinants

Document type: Journal Article
Sub-type: Article
Collections: Official 2012 Collection
School of Nursing and Midwifery Publications
 
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Created: Wed, 23 Feb 2011, 09:52:44 EST by Vicki Percival on behalf of School of Nursing and Midwifery