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A Canadian peer-reviewed journal of population health and health services research
January 2014
Impact of accelerometer epoch length on physical activity and sedentary behaviour outcomes for preschool-aged children
by Rachel C. Colley, Alysha Harvey, Kimberly P. Grattan and Kristi B. Adamo
The Canadian Health Measures Survey (CHMS) uses accelerometry to directly measure physical activity and sedentary behaviour. Accelerometers record movement data at defined intervals called "epochs." The epoch length used in research ranges from less than one second to one minute.
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