Calibration of GENEActiv accelerometer wrist cut-points for the assessment of physical activity intensity of preschool aged children
Roscoe, 2017
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Last update: January 15, 2022. Updates will occur every 3 months.
Description
Description
Cut-points for classifying physical activity intensity from signal magnitude vector were generated using receiver operating characteristics (ROC) analysis for children wearing GENEActiv monitors on the non-dominant wrist. Sensitivity and specificity ranged from 10 to 100% and 10 to 90%, respectively.
Development/Validation
Development/Validation
Sample: 21 children, 4-5 y of age
Setting: Laboratory
Activities: Stationary, treadmill walking/running
Criterion: MetaMax 3B (VO2)
Accelerometer(s): GENEActiv on each wrist
Validation approach: Comparison to criterion
Instructions
Instructions
Signal magnitude vector per 1-sec was calculated as square root of the sum of the squared acceleration in each axis, minus gravity. Below are the developed cut-points. However, as noted in the R package GGIR, these cut-points are sensitive to sampling rate, so they provide a scaled version which can be applied to any raw acceleration data.
Source Information
Source Information
Reference:
Roscoe, C. M., James, R. S., & Duncan, M. J. (2017). Calibration of GENEActiv accelerometer wrist cut-points for the assessment of physical activity intensity of preschool aged children. European Journal of Pediatrics, 176(8), 1093-1098. https://doi.org/10.1007/s00431-017-2948-2 Link to Paper.
Corresponding author: Clare Roscoe, roscoec@uni.coventry.ac.uk
Contact
Contact
Kimberly Clevenger at accelerometerrepository@gmail.com
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