Hemiplegia is commonly associated with a decrease in trunk adjustment ability. In particular, it causes a decrease in the activities of the lateral trunk muscles, and an increase in the asymmetry between the left and the right side, as well as paralysis of the trunk muscles. Additional complications are a decrease in the simultaneous contraction of the trunk muscles and a tendency to fall toward the paretic side, triggering problems, such as qualitative degradation of gait2). Physical therapy interventions are needed for these motor disorders to enable patients with brain damage to live independent lives.