Reliability of accelerometer-determined physical activity and sedentary behavior in school-aged children: a 12-country study.

T V BarreiraJ M SchunaC Tudor-LockeJ-P ChaputT S ChurchM FogelholmG HuR KuriyanA KurpadE V LambertC MaherJ MaiaV MatsudoT OldsV OnyweraO L SarmientoM StandageM S TremblayP ZhaoP T Katzmarzyk

Published in: International journal of obesity supplements (2015)

It was rare that only 4 days from all participants would be enough to achieve desirable reliability estimates. However, asking participants to wear the device for 7 days and requiring ⩾4 days of data to include the participant in the analysis might be an appropriate approach to achieve reliable estimates for most accelerometer-derived metrics.

Keyphrases

physical activity
body mass index
young adults
sleep quality
electronic health record
machine learning