INTRODUCTION
Patients with hemiplegia resulting from stroke adopt an
asymmetric position that places a smaller load on the lower
extremity of the paretic side in a standing position due to
factors such as reduction of muscle strength, impaired sense
of balance, excessive stretch reflex, joint contraction of the
antagonistic muscles, and decrease in motor control ability.
An asymmetric posture triggers gait disturbance1)
. In particular,
patients who are hemiplegic resulting from stroke
have difficulty with balance and gait because of problems
with the lower extremities. As a result, they have disability
in standing and in their gait, and their postural sway in a
standing posture is twice as high as that of healthy people of
the same age range2)
. Also their limit of stability, defined as
the maximal distance the center of gravity and move while
maintaining balance without detaching the feet from the
ground, decreases3)
INTRODUCTIONPatients with hemiplegia resulting from stroke adopt anasymmetric position that places a smaller load on the lowerextremity of the paretic side in a standing position due tofactors such as reduction of muscle strength, impaired senseof balance, excessive stretch reflex, joint contraction of theantagonistic muscles, and decrease in motor control ability.An asymmetric posture triggers gait disturbance1). In particular,patients who are hemiplegic resulting from strokehave difficulty with balance and gait because of problemswith the lower extremities. As a result, they have disabilityin standing and in their gait, and their postural sway in astanding posture is twice as high as that of healthy people ofthe same age range2). Also their limit of stability, defined asthe maximal distance the center of gravity and move whilemaintaining balance without detaching the feet from theground, decreases3)
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