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Journal of the Korean Academy of Rehabilitation Medicine 2001;25(2):227-235.
Kinetic Characteristics during Initiation of Gait in Stroke Patients.
Kim, Bong Ok , Kim, Tae Min , Chae, Jin Mok , Cho, Kang Hee
Department of Rehabilitation Medicine, College of Medicine, Chungnam National University
뇌졸중 환자의 보행시작중에 보이는 운동역학 특성
김봉옥, 김태민, 채진목, 조강희
충남대학교 의과대학 재활의학교실
Abstract

Objective
The aim of the present study was to understand biomechanical characteristics during the process of initiation of gait (IOG) from the standing position in hemiplegic patients.


Method
We recorded the ratio of the vertical forces of both limbs to body weight and the movement of net center of pressure (COP) on two force platforms during the process of initiation of gait (IOG) from standing in 10 normal control and 10 hemiplegic patients and processed these data using ELITE DMA acquisition program. All data were collected with uninvolved limb and involved limb and compared each other by independent samples t-test.


Results
1) In 10 hemiplegic patients, nine patients began taking a step with an uninvolved limb in the first, followed by an involved limb. 2) The period of IOG of the swing limb was 0.80 sec when patients walked with an uninvolved side and those of the stance limb was 1.60 sec with involved side. When the control group walked, the period of IOG of the swing limb was 0.70 sec and those of stance limb was 1.50 sec. The period of IOG of the swing limb in uninvolved side and those of the stance limb in involved side showed significant longer than control group. 3) The latency of IOG of swing and stance limb was significantly more prolonged than control groups. 4) Anteroposterior (AP) and mediolateral (ML) distance of net COP from release to unloading with uninvolved limb showed significant longer than control groups. 5) The velocity of net COP displacement from start to release with involved limb was significantly slower than control groups.


Conclusion
This pattern of IOG could be used as one of the tools to evaluate postural control during gait training in the hemiplegic patients with gait disabilities, and it can be used as a basis for specific therapeutic intervention, and it allows evaluation of the effectiveness of treatment.

Key Words: Initiation of gait (IOG), Center of pressure (COP), Release, Unloading


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