查看文章

A walker-assisted Sit-to-Stand (STS) motion of stroke patients was analyzed by simulating the motion using a musculoskeletal human model. The STS motion experiment was conducted on stroke patients and healthy adults with and without a walker using motion capture cameras and force sensors. A simulation model was developed using a musculoskeletal human model and measured motion and dynamic data for the kinematic and dynamic analysis of the lower limbs. The support provided by a walker did not affect the joint angles during the STS motion but resulted in longer total motion duration and earlier seat-off relative to the total duration in both groups. While the hip extension moment was dramatically reduced by using a walker for all subjects, the dynamic unbalance of the knee extension moment of stroke patients still remains. Activations of the hip extensor, knee extensor, and ankle plantar-flexor muscles …