Development of raw acceleration cut-points for wrist and hip accelerometers to assess sedentary behaviour and physical activity in 5–7-year-old children
Crotti, 2020
Description
Three sets of cut-points for classifying physical activity intensity from Euclidean Norm Minus One (ENMO) were generated using receiver operating characteristics (ROC) analysis for children wearing an ActiGraph on the right hip and each wrist. Sensitivity and specificity ranged from 27.4 to 82.6% and 50.1 to 96.1%, respectively.
Development/Validation
Sample: 32 children, 5-7 y of age
Setting: Inside and outside of school
Activities: Playground free-play, overground walking/running, sports/exercise, stationary
Criterion: Direct observation and compendium
Accelerometer(s): ActiGraph GT9X on right hip, each wrist
Validation approach: Holdout of 10 participants
Instructions
ENMO per 1-sec are calculated as square root of the sum of the squared acceleration in each axis, minus one, with negative values rounded up to zero. Below are the developed cut-points.
Source Information
Reference:
Crotti, M., Foweather, L., Rudd, J. R., Hurter, L., Schwarz, S., & Boddy, L. M. (2020). Development of raw acceleration cut-points for wrist and hip accelerometers to assess sedentary behaviour and physical activity in 5–7-year-old children. Journal of Sports Sciences, 38(9), 1036-1045. https://doi.org/10.1080/02640414.2020.1740469 Link to Paper
Corresponding author: Matteo Crotti, M.Crotti@2016.ljmu.ac.uk
Contact
Kimberly Clevenger at accelerometerrepository@gmail.com