A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture
The Perception Neuron Studio (PNS) is a cost-effective and widely used inertial motion capture system. However, a comprehensive analysis of its upper-body motion capture accuracy is still lacking, before it is being applied to biomechanical research. Therefore, this study first evaluated the validit...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Online Access: | https://www.mdpi.com/1424-8220/22/18/6954 |
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| author | Yiwei Wu Kuan Tao Qi Chen Yinsheng Tian Lixin Sun |
| author_facet | Yiwei Wu Kuan Tao Qi Chen Yinsheng Tian Lixin Sun |
| author_sort | Yiwei Wu |
| collection | DOAJ |
| description | The Perception Neuron Studio (PNS) is a cost-effective and widely used inertial motion capture system. However, a comprehensive analysis of its upper-body motion capture accuracy is still lacking, before it is being applied to biomechanical research. Therefore, this study first evaluated the validity and reliability of this system in upper-body capturing and then quantified the system’s accuracy for different task complexities and movement speeds. Seven participants performed simple (eight single-DOF upper-body movements) and complex tasks (lifting a 2.5 kg box over the shoulder) at fast and slow speeds with the PNS and OptiTrack (gold-standard optical system) collecting kinematics data simultaneously. Statistical metrics such as CMC, RMSE, Pearson’s r, R<sup>2</sup>, and Bland–Altman analysis were utilized to assess the similarity between the two systems. Test–retest reliability included intra- and intersession relations, which were assessed by the intraclass correlation coefficient (ICC) as well as CMC. All upper-body kinematics were highly consistent between the two systems, with CMC values 0.73–0.99, RMSE 1.9–12.5°, Pearson’s r 0.84–0.99, R<sup>2</sup> 0.75–0.99, and Bland–Altman analysis demonstrating a bias of 0.2–27.8° as well as all the points within 95% limits of agreement (LOA). The relative reliability of intra- and intersessions was good to excellent (i.e., ICC and CMC were 0.77–0.99 and 0.75–0.98, respectively). The paired <i>t</i>-test revealed that faster speeds resulted in greater bias, while more complex tasks led to lower consistencies. Our results showed that the PNS could provide accurate enough upper-body kinematics for further biomechanical performance analysis. |
| first_indexed | 2024-03-09T22:34:05Z |
| format | Article |
| id | doaj.art-ac0088cc26cd4fb282e034ceb8d7cb08 |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-09T22:34:05Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ac0088cc26cd4fb282e034ceb8d7cb082023-11-23T18:52:02ZengMDPI AGSensors1424-82202022-09-012218695410.3390/s22186954A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion CaptureYiwei Wu0Kuan Tao1Qi Chen2Yinsheng Tian3Lixin Sun4AI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing 100084, ChinaAI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing 100084, ChinaSports Engineering Research Center, China Institute of Sport Science, Beijing 100061, ChinaAI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing 100084, ChinaAI Sports Engineering Lab, School of Sports Engineering, Beijing Sport University, Beijing 100084, ChinaThe Perception Neuron Studio (PNS) is a cost-effective and widely used inertial motion capture system. However, a comprehensive analysis of its upper-body motion capture accuracy is still lacking, before it is being applied to biomechanical research. Therefore, this study first evaluated the validity and reliability of this system in upper-body capturing and then quantified the system’s accuracy for different task complexities and movement speeds. Seven participants performed simple (eight single-DOF upper-body movements) and complex tasks (lifting a 2.5 kg box over the shoulder) at fast and slow speeds with the PNS and OptiTrack (gold-standard optical system) collecting kinematics data simultaneously. Statistical metrics such as CMC, RMSE, Pearson’s r, R<sup>2</sup>, and Bland–Altman analysis were utilized to assess the similarity between the two systems. Test–retest reliability included intra- and intersession relations, which were assessed by the intraclass correlation coefficient (ICC) as well as CMC. All upper-body kinematics were highly consistent between the two systems, with CMC values 0.73–0.99, RMSE 1.9–12.5°, Pearson’s r 0.84–0.99, R<sup>2</sup> 0.75–0.99, and Bland–Altman analysis demonstrating a bias of 0.2–27.8° as well as all the points within 95% limits of agreement (LOA). The relative reliability of intra- and intersessions was good to excellent (i.e., ICC and CMC were 0.77–0.99 and 0.75–0.98, respectively). The paired <i>t</i>-test revealed that faster speeds resulted in greater bias, while more complex tasks led to lower consistencies. Our results showed that the PNS could provide accurate enough upper-body kinematics for further biomechanical performance analysis.https://www.mdpi.com/1424-8220/22/18/6954inertial motion capture systemupper-body kinematicsbiomechanicsvalidityreliability |
| spellingShingle | Yiwei Wu Kuan Tao Qi Chen Yinsheng Tian Lixin Sun A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture Sensors inertial motion capture system upper-body kinematics biomechanics validity reliability |
| title | A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture |
| title_full | A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture |
| title_fullStr | A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture |
| title_full_unstemmed | A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture |
| title_short | A Comprehensive Analysis of the Validity and Reliability of the Perception Neuron Studio for Upper-Body Motion Capture |
| title_sort | comprehensive analysis of the validity and reliability of the perception neuron studio for upper body motion capture |
| topic | inertial motion capture system upper-body kinematics biomechanics validity reliability |
| url | https://www.mdpi.com/1424-8220/22/18/6954 |
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