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Intra-Rater Test-Retest Reliability of Ely`s Test Using Smartphone in Patients With Lumbar Extension-Rotation Syndrome

한국전문물리치료학회지 2012년 19권 4호 p.46 ~ 54
박규남, 하성민, Chung Sung-dae, 김시현, 장준혁,
소속 상세정보
박규남 ( Park Kyue-nam ) - Yonsei University Graduate School Department of Physical Therapy
하성민 ( Ha Sung-Min ) - Yonsei University College of Health Science Laboratory of Kinetic Ergocise based on Movement Analysis
 ( Chung Sung-dae ) - Yonsei University Graduate School Department of Physical Therapy
김시현 ( Kim Si-hyun ) - Yonsei University Graduate School Department of Physical Therapy
장준혁 ( Jang Jun-hyeok ) - Haeundae Jaseng Hospital of Oriental Medicine

Abstract


Ely’s test is commonly used to assess rectus femoris muscle flexibility. however, a reliability limit of this test was demonstrated by a previous study. In this study, we present an alternative method using an application for a digital horizontal level in a smartphone (DHLS) to complement the reliability limit of Ely’s test. The aim of this study was to examine the reliability of Ely’s test using DHLS on the pelvis, compared to using visual observation (VO) of pelvic and hip motions. Nineteen patients with lumbar extension-rotation syndrome were recruited for this study. An examiner examined the rectus femoris flexibility (both pass/fail and goniometer scoring) through Ely’s test using both DHLS and VO. A retest session was completed two hours later for within-day reliability and seven days later for between-day intra-rater test-retest reliability. Results showed higher Kappa values for pass/fail scoring and higher intraclass correlation coefficient values for goniometer scoring in Ely’s test using DHLS, compared to using VO. Measurement error and Bland and Altman plots further demonstrated the degree of intra-rater variance during Ely’s test using DHLS in a clinical setting, compared to using VO. These results demonstrated that Ely’s test using DHLS showed acceptable reliability compared to using VO. Ely’s test using DHLS could be widely used for measuring the rectus femoris muscle flexibility in patients with lumbar extension-rotation syndrome, although the inter-rater reliability needs to be established first.

키워드

Digital horizontal level;Ely`s test;Reliability;Smartphone

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