Infant trunk posture and arm movement assessment using pressure mattress, inertial and magnetic measurement units (IMUs)

Table 1 Acceleration, jerk, and velocity based motor pattern parameter results for referential motion capture (Optotrak) and IMU data

	Optotrak	Forearm IMU
Root mean square acceleration [m/s²]	0.77	0.89
Root mean square jerk [m/s³]	12.08	10.48
Normalized mean absolute jerk [m/s³]	7.98	6.86
Pearson R acceleration	0.79
Pearson R jerk	0.76
Pearson R hand velocity forearm IMU	0.93
Pearson R hand velocity 2 IMUs per arm	0.95

ISSN: 1743-0003