Fig. 3
From: Improving stand-to-sit maneuver for individuals with spinal cord injury
Typical progression of the stand-to-sit maneuver from quiet standing (a) through initiation (b), early and late descent (c-d) and terminal impact (e-f). Coupling (top figure) required controlling the hips by means of upper limbs for knee flexion which resulted in greater forward trunk movement during STS than with the hydraulic damping mechanism (bottom figure) where knee flexion was controlled by the mechanism alone