Assessment of Upper Body Slip on Electrically Adjustable Bed

This paper show the effects on the body slip according to the lengths of seat section and the initial angle of upper leg section. We first develop a sample mattress support platform whose lengths of seat and leg sections are changeable. Then experiments are performed with six subjects. To verify the effects to body slip, each initial condition of the experiments are selected based on the anthropometric data of human body. Then the experimental results are verified by a statistics method. From the experimental results we propose ideal lengths of the mattress support platform and a guideline to care the elderly persons at home.