Evaluation of Seat Pan Inclination During Sit-to-stand for Development of Elderly Lifting-chair Hong, Jae-Soo; Kim, Jong-Hyun; Chun, Keyoung-Jin;
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.
Development of Non-Motorized Lifting Chair For the Elderly, Journal of Society of Korea Industrial and Systems Engineering, 2015, 38, 4, 226
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