Trunk kinematics related to generation and transfer of the trunk flexor momentum are associated with sit-to-stand performance in chronic stroke survivors.

Background: Stroke subjects show poorer sit-to-stand (STS) performance when compared to matched-healthy subjects, but it is still unclear the trunk role in this poorer performance.

Objectives: To compare the trunk kinematics related to the generation/transfer of the flexor momentum during the STS task between stroke and matched-healthy subjects, and to investigate if there were relationships between these variables and STS performance.

Methods: Eighteen chronic stroke survivors and 18 matched-healthy subjects were assessed.