Table 2. Pearson correlation coefficients for proxies for the level of physical activity.

	L1DBA	L2DBA	L1Jerk	L2Jerk
L1DBA	1.000
L2DBA	0.994	1.000
L1Jerk	0.797	0.799	1.000
L2Jerk	0.797	0.803	0.994	1.000

Note:

Correlations determined using a total of ~1,500 h of acceleration data recorded at 20 Hz sampling frequency with a triaxial accelerometer mounted on the left hind leg of 48 different dairy cows during standing (all activities in upright posture; data from Brouwers et al. (2023)). L1DBA, L1 norm of the dynamic body acceleration vector; L2DBA, L2 norm of the dynamic body acceleration vector; L1Jerk, the L1 norm of the jerk vector; L2Jerk, L2 norm of the jerk vector.