Reliability of levator scapulae index in subjects with and without scapular downward rotation syndrome |
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| Affiliation: | 1. Applied Kinesiology and Ergonomic Technology Laboratory, Department of Physical Therapy, The Graduate School, Yonsei University, Baekwoon-kwan, 1 Yonseidae-gil, Wonju, Kangwon-do, South Korea;2. Department of Physical Therapy, College of Health and Welfare, Woosong University, #17-2, Jayang-dong, Dong-gu, Daejeon, South Korea;1. Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea;2. Shinwoo Industry Co., Ltd., Incheon 404-819, Republic of Korea;1. Rehabilitation Medicine, School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Republic of Korea;2. Department of Human Factors Engineering, Ulsan National Institute of Science and Technology, Republic of Korea;1. Department of Physiotherapy, Ariel University, Israel;2. Department of Orthopaedic Surgery, Tel-Aviv Medical Center, Tel-Aviv, Israel;1. Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium;2. Department of Physical Medicine and Orthopedic Surgery, University Hospital, Ghent, Belgium;1. School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan;2. Physical Therapy Center, National Taiwan University Hospital, Taipei, Taiwan |
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| Abstract: | ObjectivesThe objective of this study was to introduce levator scapulae (LS) measurement using a caliper and the levator scapulae index (LSI) and to investigate intra- and interrater reliability of the LSI in subjects with and without scapular downward rotation syndrome (SDRS).DesignTwo raters measured LS length twice in 38 subjects (19 with SDRS and 19 without SDRS).Main outcome measuresFor reliability testing, intraclass correlation coefficients (ICCs), standard error of measurement (SEM), and minimal detectable change (MDC) were calculated.ResultsIntrarater reliability analysis resulted with ICCs ranging from 0.94 to 0.98 in subjects with SDRS and 0.96 to 0.98 in subjects without SDRS. These results represented that intrarater reliability in both groups were excellent for measuring LS length with the LSI. Interrater reliability was good (ICC: 0.82) in subjects with SDRS; however, interrater reliability was moderate (ICC: 0.75) in subjects without SDRS. Additionally, SEM and MDC were 0.13% and 0.36% in subjects with SDRS and 0.35% and 0.97% in subjects without SDRS. In subjects with SDRS, low dispersion of the measurement errors and MDC were shown.ConclusionsThis study suggested that the LSI is a reliable method to measure LS length and is more reliable for subjects with SDRS. |
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| Keywords: | Levator scapulae Intraclass coefficients Standard error of measurement |
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