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Concurrent Validity Of The Actigraph Gt3x+ And Activpal For Assessing Sedentary Behaviour In 2-3-Year-Old Children Under Free-Living Conditions, Joao Rafael Rodrigues Pereira, Eduarda Sousa-Sa, Zhiguang Zhang, Dylan P. Cliff, Rute Santos
Concurrent Validity Of The Actigraph Gt3x+ And Activpal For Assessing Sedentary Behaviour In 2-3-Year-Old Children Under Free-Living Conditions, Joao Rafael Rodrigues Pereira, Eduarda Sousa-Sa, Zhiguang Zhang, Dylan P. Cliff, Rute Santos
Faculty of Social Sciences - Papers (Archive)
Objectives
ActiGraph accelerometer cut-points are commonly used to classify sedentary behaviour (SB) in young children. However, they vary from 5counts/5 s to 301counts/15 s, resulting in different estimates and inconsistent findings. The aim was to examine the concurrent validity of ActiGraph GT3X + cut-points against the activPAL for measuring SB in 2–3-year-olds during free-living conditions.
Design
Observational validation-study.
Methods
Sixty children were fitted with the activPAL and ActiGraph simultaneously for at least 2 h. Nine ActiGraph cut-points ranging from 60 to 1488 counts per minute were used to derive SB. Bland & Altman plots and equivalent tests were performed to …
Predictive Validity And Classification Accuracy Of Actigraph Energy Expenditure Equations And Cut-Points In Young Children, Xanne Janssen, Dylan P. Cliff, John J. Reilly, Trina Hinkley, Rachel A. Jones, Marijka Batterham, Ulf Ekelund, Soren Brage, Anthony D. Okely
Predictive Validity And Classification Accuracy Of Actigraph Energy Expenditure Equations And Cut-Points In Young Children, Xanne Janssen, Dylan P. Cliff, John J. Reilly, Trina Hinkley, Rachel A. Jones, Marijka Batterham, Ulf Ekelund, Soren Brage, Anthony D. Okely
Faculty of Social Sciences - Papers (Archive)
Objectives
Evaluate the predictive validity of ActiGraph energy expenditure equations and the classification accuracy of physical activity intensity cut-points in preschoolers.
Methods
Forty children aged 4–6 years (5.3±1.0 years) completed a ~150-min room calorimeter protocol involving age-appropriate sedentary, light and moderate-to vigorous-intensity physical activities. Children wore an ActiGraph GT3X on the right mid-axillary line of the hip. Energy expenditure measured by room calorimetry and physical activity intensity classified using direct observation were the criterion methods. Energy expenditure was predicted using Pate and Puyau equations. Physical activity intensity was classified using Evenson, Sirard, Van Cauwenberghe, Pate, Puyau, and Reilly, ActiGraph cut-points. …