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. 2019 Feb 4;7:2100310. doi: 10.1109/JTEHM.2019.2897306

TABLE 3. Accelerometer Derived Features.

Name Description
Magnitude Average - Time average of the magnitude vector
Maximum Magnitude - Maximum value of the magnitude vector
Minimum Magnitude - Minimum value of the magnitude vector
NARJ - Normalized average rectified jerk [30]
Power 1 - Power of the first dominant FFT coefficient
Power 2 - Power of the first dominant FFT coefficient
Frequency 1 - Frequency corresponding to the first dominant FFT coefficient
Frequency 2 - Frequency corresponding to the second dominant FFT coefficient
Movement Count - Number of events recorded in the hour