Table A1.

A total of 30 predictor variables including the translational and rotational acceleration along three axes (x, y, z) across each of the five sensors.

Variables	Variable Names	Descriptions
1	l1.acc.x	Left Wrist, Accelerometer, X-axis
2	l1.acc.y	Left Wrist, Accelerometer, Y-axis
3	l1.acc.z	Left Wrist, Accelerometer, Z-axis
4	l1.gyr.x	Left Wrist, Gyroscope, X-axis
5	l1.gyr.y	Left Wrist, Gyroscope, Y-axis
6	l1.gyr.z	Left Wrist, Gyroscope, Z-axis
7	l2.acc.x	Left Arm, Accelerometer, X-axis
8	l2.acc.y	Left Arm, Accelerometer, Y-axis
9	l2.acc.z	Left Arm, Accelerometer, Z-axis
10	l2.gyr.x	Left Arm, Gyroscope, X-axis
11	l2.gyr.y	Left Arm, Gyroscope, Y-axis
12	l2.gyr.z	Left Arm, Gyroscope, Z-axis
13	r1.acc.x	Right Wrist, Accelerometer, X-axis
14	r1.acc.y	Right Wrist, Accelerometer, Y-axis
15	r1.acc.z	Right Wrist, Accelerometer, Z-axis
16	r1.gyr.x	Right Wrist, Gyroscope, X-axis
17	r1.gyr.y	Right Wrist, Gyroscope, Y-axis
18	r1.gyr.z	Right Wrist, Gyroscope, Z-axis
19	r2.acc.x	Right Arm, Accelerometer, X-axis
20	r2.acc.y	Right Arm, Accelerometer, Y-axis
21	r2.acc.z	Right Arm, Accelerometer, Z-axis
22	r2.gyr.x	Right Arm, Gyroscope, X-axis
23	r2.gyr.y	Right Arm, Gyroscope, Y-axis
24	r2.gyr.z	Right Arm, Gyroscope, Z-axis
25	b.acc.x	Hip, Accelerometer, X-axis
26	b.acc.y	Hip, Accelerometer, Y-axis
27	b.acc.z	Hip, Accelerometer, Z-axis
28	b.gyr.x	Hip, Gyroscope, X-axis
29	b.gyr.y	Hip, Gyroscope, Y-axis
30	b.gyr.z	Hip, Gyroscope, Z-axis