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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