Validation and Assessment of a Posture Measurement System with Magneto-Inertial Measurement Units
| Autor: | Emiliano Schena, Carlo Massaroni, Paola Saccomandi, Marco Bravi, Michelangelo Morrone, Silvia Sterzi, Davide Paloschi, Sandra Miccinilli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Lordosis
range of movement Computer science Movement Posture posture monitoring Kyphosis TP1-1185 Sitting motion capture system Biochemistry Motion capture lordosis Article Analytical Chemistry Pelvis kyphosis Units of measurement Inertial measurement unit medicine Humans Computer vision Electrical and Electronic Engineering Instrumentation wearable systems Sitting Position business.industry System of measurement Chemical technology Work (physics) medicine.disease inertial sensors Atomic and Molecular Physics and Optics Biomechanical Phenomena Artificial intelligence business |
| Zdroj: | Sensors, Vol 21, Iss 6610, p 6610 (2021) Sensors (Basel, Switzerland) Sensors Volume 21 Issue 19 |
| ISSN: | 1424-8220 |
| Popis: | Inappropriate posture and the presence of spinal disorders require specific monitoring systems. In clinical settings, posture evaluation is commonly performed with visual observation, electrogoniometers or motion capture systems (MoCaps). Developing a measurement system that can be easily used also in non-structured environments would be highly beneficial for accurate posture monitoring. This work proposes a system based on three magneto-inertial measurement units (MIMU), placed on the backs of seventeen volunteers on the T3, T12 and S1 vertebrae. The reference system used for validation is a stereophotogrammetric motion capture system. The volunteers performed forward bending and sit-to-stand tests. The measured variables for identifying the posture were the kyphosis and the lordosis angles, as well as the range of movement (ROM) of the body segments. The comparison between MIMU and MoCap provided a maximum RMSE of 5.6° for the kyphosis and the lordosis angles. The average lumbo-pelvic contribution during forward bending (41.8 ± 8.6%) and the average lumbar ROM during sit-to-stand (31.8 ± 9.8° for sitting down, 29.6 ± 7.6° for standing up) obtained with the MIMU system agree with the literature. In conclusion, the MIMU system, which is wearable, inexpensive and easy to set up in non-structured environments, has been demonstrated to be effective in posture evaluation. |
| Databáze: | OpenAIRE |
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