From: Infant trunk posture and arm movement assessment using pressure mattress, inertial and magnetic measurement units (IMUs)
Opto
2IMUs
1UA
1FA
Travelled path P [cm]
3766
4146
4429
4181
Average speed S [ c m/s]
4.5
4.9
5.2
5.0
Average speed norm [%]
100
110
118
111