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Table 3 Travelled path P and average speed S results for referential motion capture system (Optotrak) and various IMU sensor placements

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