Validation of thigh-based accelerometer estimates of postural allocation in 5-12 year-olds.

ABSTRACT:

Objectives

To validate activPAL3™ (AP3) for classifying postural allocation, estimating time spent in postures and examining the number of breaks in sedentary behaviour (SB) in 5-12 year-olds.

Design

Laboratory-based validation study.

Methods

Fifty-seven children completed 15 sedentary, light- and moderate-to-vigorous intensity activities. Direct observation (DO) was used as the criterion measure. The accuracy of AP3 was examined using a confusion matrix, equivalence testing, Bland-Altman procedures and a paired t-test for 5-8y and 9-12y.

Results

Sensitivity of AP3 was 86.8%, 82.5% and 85.3% for sitting/lying, standing, and stepping, respectively, in 5-8y and 95.3%, 81.5% and 85.1%, respectively, in 9-12y. Time estimates of AP3 were equivalent to DO for sitting

SUBMITTER: van Loo CM 

PROVIDER: S-EPMC5361055 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature