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BMC Musculoskeletal Disorders
Published in: BMC Musculoskeletal Disorders 1/2019

Open Access 01-12-2019 | Spinal Muscular Atrophy | Research article

Reliability of four tests to assess body posture and the range of selected movements in individuals with spinal muscular atrophy

Authors: Agnieszka Stępień, Maria Jędrzejowska, Katarzyna Guzek, Witold Rekowski, Jolanta Stępowska

Published in: BMC Musculoskeletal Disorders | Issue 1/2019

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Abstract

Background

The majority of individuals with spinal muscular atrophy (SMA) experience progressive skeletal deformities which may affect the quality of life and mobility. To date, no studies have evaluated the reliability of tests assessing body posture and joint mobility in SMA patients. The purpose of this study was to assess the reliability of Cervical Rotation test (CR), Supine Angle of Trunk Rotation test (SATR), Hip Extension test (HE) and Pelvic Obliquity test (PO) developed to evaluate the musculoskeletal system in SMA individuals.

Methods

Thirty individuals (12 girls and 18 boys) aged 4–15 with SMA type II (n = 24) and III (n = 6) confirmed by genetic examinations were qualified for the study. The participants were examined twice by three physiotherapists on the same day. The examination included four tests, i.e. CR, SATR, HE and PO tests aimed at assessing ranges of rotation in the cervical spine, chest deformities, ranges of hip extension and pelvis position while sitting. Statistical calculations were made with the use of statistical software IBM SPSS Statistics version 20. Reliability was assessed using the Intraclass Correlation Coefficient (ICC).

Results

Intraobserver reliability was excellent for CR (ICC range 0.839–0.911), SATR (ICC range 0.918–0.939 - the upper part of the sternum; ICC range 0.951–0.975 - the lower part of the sternum), HE (ICC range 0.988–0,991) and PO (ICC range 0.896–0.935) tests.
The interobserver ICC reached the excellent values in CR (ICC range 0.912–0.920), SATR (ICC = 0.888 - the upper part of the sternum, ICC = 0.951 - the lower part of the sternum), HE (ICC range 0.922–0.923) and PO (ICC = 0.928) tests.

Conclusions

CR, SATR, HE and PO tests are reliable and may be used for examining individuals with SMA. The application of these tests provides a possibility to detect early changes in the musculoskeletal system in children and adolescents and to assess the effectiveness of the implemented pharmacotherapy and rehabilitation.
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Metadata
Title
Reliability of four tests to assess body posture and the range of selected movements in individuals with spinal muscular atrophy
Authors
Agnieszka Stępień
Maria Jędrzejowska
Katarzyna Guzek
Witold Rekowski
Jolanta Stępowska
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2019
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/s12891-018-2389-8

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