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    Development of an instrumented chair to identify the phases of the sit-to-stand movement

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    Authors
    Shukla, Brajesh K.
    Jain, Hiteshi
    Singh, Sandeep
    Vijay, Vivek
    Yadav, Sandeep
    Hewson, David
    Affiliation
    Indian Institute of Technology Jodhpur
    University of Bedfordshire
    Issue Date
    2020-11-30
    Subjects
    instrumented chair
    sit-to-stand
    geriatric functional screening
    sensor fusion
    RGB
    dynamic time warping
    
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    Other Titles
    8th European Medical and Biological Engineering Conference Proceedings of the EMBEC 2020, November 29 – December 3, 2020 Portorož, Slovenia
    Abstract
    Instrumented versions of functional geriatric screening tests have been developed to improve clinical precision. Several different instrumented versions of the Sit-to-Stand (iSTS) test have been developed using a range of sensors such as accelerometers and cameras. An instrumented chair equipped with load cells and an ultrasound sensor was developed to detect phases of the STS (Sit to Stand). The chair was designed to be able to detect all the phases of the STS, including when the person was not in contact with the chair. Performance of the iSTS chair was compared between an RGB camera approach, and a data-fusion approach using the load-cell and ultrasound equipped chair. Ten adult subjects were tested performing the 5STS at two self-selected speeds. The accuracy of the load cell equipped chair was 70%, while the RGB camera achieved 76% accuracy. The ultrasound version of the chair and the fusion of the RGB and load cells technique both achieved significantly better accuracy at 86% and 89%, respectively. The new version of the instrumented chair obtained a high degree of accuracy in detecting the different phases of the STS and is suitable to detect STS phases without requiring additional sensors. Future work will test older subjects and aim to develop new parameters based on the phases of the STS as indicators of physical performance.
    Citation
    Shukla BK, Jain H, Singh S, Vijay V, Yadav SK, Hewson DJ (2021) 'Development of an instrumented chair to identify the phases of the sit-to-stand movement', 8th European Medical and Biological Engineering Conference - Portorož, Springer Science and Business Media Deutschland GmbH.
    Publisher
    Springer Science and Business Media Deutschland GmbH
    URI
    http://hdl.handle.net/10547/624731
    DOI
    10.1007/978-3-030-64610-3_44
    Additional Links
    https://link.springer.com/chapter/10.1007%2F978-3-030-64610-3_44
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ISBN
    9783030646097
    ae974a485f413a2113503eed53cd6c53
    10.1007/978-3-030-64610-3_44
    Scopus Count
    Collections
    Health

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