Journal of Acupuncture Research

Korean Acupuncture & Moxibustion Medicine Society (대한침구의학회)
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Test-retest Reliability and Intratest Repeatability of Measuring Lumbar Range of Motion Using Inertial Measurement Unit

관성측정장치를 이용한 요추 가동범위 측정방법의 반복성 및 검사자 내 검사-재검사 신뢰도 연구

  • Ahn, Ji Hoon (Department of Acupuncture and Moxibustion Medicine, DaeJeon Jaseng Hospital of Oriental Medicine) ;
  • Kim, Hyun Ho (Department of Biofunctional Medicine and Diagnostics, College of Korean Medicine, Kyung Hee University) ;
  • Youn, Woo Suck (Department of Human Informatics of Korean Medicine, Interdisciplinary Programs, Kyung Hee University) ;
  • Lee, Sun Ho (Department of Acupuncture and Moxibustion Medicine, DaeJeon Jaseng Hospital of Oriental Medicine) ;
  • Shin, You Bin (Department of Acupuncture and Moxibustion Medicine, DaeJeon Jaseng Hospital of Oriental Medicine) ;
  • Kim, Sang Min (Department of Acupuncture and Moxibustion Medicine, DaeJeon Jaseng Hospital of Oriental Medicine) ;
  • Park, Young Jae (Department of Biofunctional Medicine and Diagnostics, College of Korean Medicine, Kyung Hee University) ;
  • Park, Young Bae (Department of Biofunctional Medicine and Diagnostics, College of Korean Medicine, Kyung Hee University)
  • 안지훈 (대전자생한방병원 침구의학과) ;
  • 김현호 (경희대학교 한의과대학 진단.생기능의학과) ;
  • 윤우석 (경희대학교 한의과대학 한방인체정보의학과) ;
  • 이순호 (대전자생한방병원 침구의학과) ;
  • 신유빈 (대전자생한방병원 침구의학과) ;
  • 김상민 (대전자생한방병원 침구의학과) ;
  • 박영재 (경희대학교 한의과대학 진단.생기능의학과) ;
  • 박영배 (경희대학교 한의과대학 진단.생기능의학과)
  • Received : 2014.02.10
  • Accepted : 2014.03.10
  • Published : 2014.03.20
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Abstract

Objectives : The purpose of this study is to estimate the test-retest reliability and the intratest repeatability in measuring the lumbar range of motion of healthy volunteers with wireless microelectromechanical system inertial measurement unit(MEMS-IMU) system and to discuss the feasibility of this system in the clinical setting to evaluate the lumbar spine movement. Methods : 19 healthy male volunteers were participated, who got under 21 points at oswestry disability index(ODI) were adopted. Their lumbar motion were measured with IMU twice in consecutive an hour for the test-retest reliability study. Intratest repeatability was calculated in the two tests separately. The calculated intraclass correlation coefficients(ICC) were discussed and compared with the those of the previous studies. Results : Lumbar range of motion of flexion $41.45^{\circ}$, extension $16.34^{\circ}$, right lateral bending $16.41^{\circ}$ left lateral bending $13.63^{\circ}$ right rotation $-2.47^{\circ}$, left rotation $-0.61^{\circ}$. ICCs were 0.96~1.00(intratest repeatability) and 0.61~0.92(test-retest reliability). Conclusion : This study shows that MEMS-IMU system demonstrates a high test-retest reliability and intratest repeatability by calculated intraclass correlation coefficients. The results of this study represents that wireless inertial sensor measurement system has portable and economical efficiency. By MEMS-IMU system, we can measures lumbar range of motion and analyze lumbar motion effectively.

Keywords

References

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