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Development of a sit-to-stand assistive device with pressure sensor for elderly and disabled: a feasibility test

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Abstract

Elderly patients face difficulty in performing the sit-to-stand motion; hence, their dependency on assistive devices for activities of daily living is increasing. However, the existing devices do not provide support according to the individual’s characteristics. This study aimed to develop a sit-to-stand motion assistive chair that detects the user’s weight using a load sensor and assists them to stand up by adjusting the speed themselves as per their weight and preference. Additionally, we investigated the feasibility of the developed device. A device for assisting patients in the sit-to-stand motion in rising up from the chair by electrical motorization was developed. This device senses the load on the seat plate using the load sensor and transmits it to the display through which the users can control the speed themselves using the speed control device. To test its feasibility, the electromyographic muscle activation was analyzed for the erector spinae, quadriceps, tibialis anterior, and gastrocnemius muscles in the sit-to-stand motion using this device in five healthy adults. When compared with the non-use of the device, the use of the developed assistive chair device significantly decreased the muscle activation of the erector spinae, quadriceps, tibialis anterior, and gastrocnemius by 37.27%, 20.44%, 14.50%, and 10.56% on the left and by 17.98%, 24.48%, 32.61%, and 6.05% on the right, respectively. The assistive device with a pressure sensor can effectively assist elderly patients with reduced muscle strength and balance in performing the sit-to-stand motion.

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Funding

Authors state no funding involved.

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Authors and Affiliations

  1. Department of Physical Therapy, Kangwon National University, Samcheok, Republic of Korea

    Kyeongbong Lee

  2. Department of Physical Therapy, Graduate School of Kyungnam University, Changwon, Republic of Korea

    SinHo Ha

  3. Department of Naval Architecture and Ocean System Engineering, Kyungnam University, Changwon, Republic of Korea

    Kwangkook Lee

  4. Department of Physical Therapy, Woosuk University, Wanju, Republic of Korea

    SoungKyun Hong

  5. Department of Occupational Therapy, Dongseo University, Pusan, Republic of Korea

    HyeonHui Shin

  6. Department of Physical Therapy, Kyungnam University, Changwon, Republic of Korea

    GyuChang Lee

Authors
  1. Kyeongbong Lee
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  2. SinHo Ha
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  3. Kwangkook Lee
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  4. SoungKyun Hong
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  5. HyeonHui Shin
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Correspondence to GyuChang Lee.

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Ethical approval

The protocol for the research project has been approved by the Kyungnam University ethics committee within which the work was undertaken. The research conforms to the provisions of the Declaration of Helsinki in 1995. All participants gave informed consent for the research, and that their anonymity was preserved.

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Lee, K., Ha, S., Lee, K. et al. Development of a sit-to-stand assistive device with pressure sensor for elderly and disabled: a feasibility test. Phys Eng Sci Med 44, 677–682 (2021). https://doi.org/10.1007/s13246-021-01015-0

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  • DOI: https://doi.org/10.1007/s13246-021-01015-0

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