Research on the Standing Movement of the Elderly

Abstract

With the acceleration of the global aging process, the market for the elderly is getting more and more attention. Standing movement is one of the abilities that must be possessed in daily life, and it is also an important factor affecting the independent life of the elderly. As the elderly increase in age, lower limb strength decreases. In daily standing behavior, many elderly people have difficulty in standing, which may reduce the quality of life of the elderly and is not good for the mental health of the elderly. It can be seen that it is of great practical significance to investigate and design assisted standing products for the elderly. Therefore, this study conducted FTSST (five-times-sit-to-stand test) on the young and elderly groups, and found that the time of FTSST in the two groups was significantly different (P < 0.05), but in different genders was not. The method of combining motion capture technology and force plate was used to carry out STS experiments for the elderly. Standing behavior was divided into three phases. The time changes of each phase in the STS process were analyzed. The time spent in phase 3 was the longest. The phase 2 and phase 3 of the STS process need to be focused on. The relationship between GRF (ground reaction forces), joint angles, motion trajectories and assisted standing products was studied. The assistive angle of the assisted standing product was at least 53°. The assistive height of the assisted standing product should ensure that the hip could be lifted at least 250 mm. The standing speed was variable rather than uniform. Changes in GRF and joint angles provided human characteristics data and design references for the design of assisted standing products.