![]() ![]() Upper body kinematics were collected simultaneously at 100 Hz by the PNS and a passive optical motion capture system (OptiTrack, Natural Point, USA) with ten high-speed cameras. Seven male adults (age: 23.28 ± 1.25 years, height: 176.14 ± 8.01cm, weight: 76 ± 7.46 kg) participated in this study after signing informed consent forms. ![]() Therefore, the aim of this study was to first evaluate the validity and reliability of the upper body kinematics provided by the PNS through comparison to a gold-standard optical system and then verify if the system accuracy depends on the task complexity and movement speed. Its validity and reliability to quantify the lower body kinematics during functional movements have been proven, but those studies of the upper body are still lacking. As one of the most popular IMU-based motion capture system, the Perception Neuron system (PNS) has been widely applied within gaming and virtual reality interaction, film effects development and rehabilitation fields.
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