Validation of the GENEA Accelerometer
Esliger, 2011
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Last update: January 15, 2022. Updates will occur every 3 months.
Description
Description
Three sets of cut-points for classifying physical activity intensity from signal magnitude vector (gravity subtracted) were generated using receiver operating characteristics (ROC) analysis for adults wearing GENEA monitors on the right hip and each wrist. Sensitivity and specificity ranged from 73 to 99% and 56 to 99%, respectively.
Development/Validation
Development/Validation
Sample: 60 adults
Setting: Laboratory
Activities: Activities of daily living, treadmill and overground walking/running, stationary
Criterion: Cosmed K4b2 (VO2)
Accelerometer(s): GENEA on right hip, each wrist
Validation approach: Comparison with criterion
Instructions
Instructions
Signal magnitude vector (gravity subtracted) per 1-min 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:
Esliger, D. W., Rowlands, A. V., Hurst, T. L., Catt, M., Murray, P., & Eston, R. G. (2011). Validation of the GENEA Accelerometer. Medicine and Science in Sports and Exercise, 43(6), 1085-93. https://doi.org/10.1249/MSS.0b013e31820513be Link to Paper.
Corresponding author: Dale Esliger, dale.esliger@usask.ca
Contact
Contact
Kimberly Clevenger at accelerometerrepository@gmail.com
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