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Journal of the Korean Academy of Rehabilitation Medicine 2004;28(5):488-493.
Gait Analysis Using Accelerometer in Stroke Patients.
Lee, Ju Hyun , Park, Si Woon , Kim, Dong A , Jang, Soon Ja , Kim, Young Ho , Yi, Jin bock
1Department of Rehabilitation Medicine, National Rehabilitation Hospital, Korea. ljuhyun003@hanmail.net
2Department of Biomedical Engineering, Research Institute of Medical Engineering, Research Institute for Instruments and Rehabilitation Engineering, Yonsei University, Korea.
3Department of Prosthetics and Orthotics, Hanseo University, Korea.
가속도계를 이용한 뇌졸중 환자의 보행분석
이주현, 박시운, 김동아, 장순자, 김영호1, 이진복2
국립재활병원 재활의학과, 1연세대학교 의공학과 의공학연구소 의용계측 및 재활공학 연구센터, 2한서대학교 의료보장구학과
Abstract
Objective
The aim of this study is to evaluate the acceleration of the center of mass (COM) of the body in stroke patients.
Method
Seventeen stroke patients and 9 normal subjects were participated. Three dimensional gait analysis was used to classify gait phases for the reference. The accelerometer held over the COM were used to record vertical and medio- lateral accelerations of the COM of the body. Modified Ashworth scale and Brunnstrom stage were used to evaluate the clinical status of stroke patients.
Results
In normal subjects, the acceleration showed symmetric pattern. The maximum peak of vertical acceleration occurred in loading response. In stroke patients, theacceleration wave was characterized by asymmetry and polyphasicity. Maximum peak in affected side was higher than that in unaffected side (p<0.05). There were significant correlations between several elements of hemiplegic gait and the correspondent acceleration values; interval of successive peak I in vertical acceleration vs. step time, walking velocity and swing symmetry ratio vs. mean peak I, swing symmetry ratio vs. affected side peak I, step length symmetry ratio vs. peak I symmetry ratio.
Conclusion
The accelerometer can be an easy and useful way to evaluate gait characteristics in stroke patients. (J Korean Acad Rehab Med 2004; 28: 488-493)
Key Words: Gait analysis, Accelerometer, Stroke


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