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.


    Access

    Download


    Export, share and cite



    Title :

    Validation and assessment of a posture measurement system with magneto-inertial measurement units


    Contributors:

    Publication date :

    2021-01-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Evaluation of spinal posture during gait with inertial measurement units

    Digo, E. / Pierro, G. / Pastorelli, S. et al. | BASE | 2020

    Free access

    Calibrating multiple inertial measurement units

    NAVIN SIDDHARTH RATAPANI / ADAMS DEREK / BOSSE MICHAEL CARSTEN et al. | European Patent Office | 2024

    Free access

    CALIBRATING MULTIPLE INERTIAL MEASUREMENT UNITS

    NAVIN SIDDHARTH RATAPANI / ADAMS DEREK / BOSSE MICHAEL CARSTEN et al. | European Patent Office | 2023

    Free access

    CALIBRATING MULTIPLE INERTIAL MEASUREMENT UNITS

    NAVIN SIDDHARTH / ADAMS DEREK / BOSSE MICHAEL et al. | European Patent Office | 2023

    Free access

    Micromechanical inertial measurement units (MMIMU)

    SITOMER, JAMES / CONNELLY, JAMES / MARTIN, JACOB | AIAA | 1993