Journal of the Ergonomics Society of Korea (대한인간공학회지)

Ergonomics Society of Korea (대한인간공학회)
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Evaluation of Seat Pan Inclination During Sit-to-stand for Development of Elderly Lifting-chair

  • Hong, Jae-Soo (Gerontechnology Center, Korea Institute of Industrial Technology) ;
  • Kim, Jong-Hyun (Gerontechnology Center, Korea Institute of Industrial Technology) ;
  • Chun, Keyoung-Jin (Gerontechnology Center, Korea Institute of Industrial Technology)
  • Received : 2010.12.13
  • Accepted : 2011.02.14
  • Published : 2011.04.30
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Abstract

Objective: The aim of this study is to set the design direction of the lift chair's tilting seat for development. Background: Great attention has been shown to the development of senior friendly product, because of increasing elderly population rapidly in Korea. Therefore, we need to study on sit-to-stand(STS) motion of elderly systematically for developing lift chair that is one of senior friendly products. Method: In this study, we analyzed joint moment(knee, hip) and muscle activity (Erector spinae, Rectus femoris, Vastus lateralis) on STS motion of elderly(female, 60~70: 7) and young people(female, 20~30: 7) using 3 dimension motion capture camera, force plate, wireless EMG. Results: The results of muscle activity showed a similar trend but the results of joint moment were a lot of differences between the young and the elderly. Conclusion: The results of knee joint moment suggest the angle(10~30deg)-adjustable seat that can be better than to find the optimal seat's angle. Application: The method and results of this study are expected to develop senior friendly product and verification as well as be available to various application.

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References

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