Publication: Effect of releasing quadratus lumborum muscle on hip and knee muscle length in asymptomatic individuals
Issued Date
2021-04-01
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ISSN
15329283
13608592
13608592
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2-s2.0-85104347343
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Bodywork and Movement Therapies. Vol.26, (2021), 542-547
Suggested Citation
Yaowapa Jairakdee, Wunpen Chansirinukor, Tippawan Sitti Effect of releasing quadratus lumborum muscle on hip and knee muscle length in asymptomatic individuals. Journal of Bodywork and Movement Therapies. Vol.26, (2021), 542-547. doi:10.1016/j.jbmt.2020.11.008 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/77097
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Title
Effect of releasing quadratus lumborum muscle on hip and knee muscle length in asymptomatic individuals
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Abstract
Background: Quadratus lumborum muscle (QL) is one of several muscles subject to tightness and relevant to symptoms in the back and hip. Although releasing the tight QL seems to resolve these symptoms in clinic, no study has investigated the effects of such releasing on the length of the hip and knee muscles. Objective: To compare muscle length of the hip and knee joints between pre- and post-releasing the QL. Methods: A quasi-experimental design (one-group pretest-posttest design) was conducted. Thirty asymptomatic participants with mean age of 20.40 years took part in the study. An examiner assessed the participants’ pelvic transverse gliding movement in standing and rotation of the upper trunk in supine to perceive the end feel of tissue resistance. The side with perceived more muscle tension was selected for receiving muscle release. Before manually releasing the QL, the participant was in the modified Thomas test position and pre-test range of motion (ROM) of hip flexion, hip abduction, and knee flexion angles was measured using a standard goniometer. After releasing the QL, the aforementioned angles were measured for post-test ROM. Results: The hip flexion angle was significantly reduced after releasing the QL (p < 0.05), whereas no statistically significant differences were found for the other 2 angles (p > 0.05). Conclusion: The length of iliopsoas muscle was increased after releasing the QL. The findings may be due to continuous fascial connection and similar attachment of the origins of these 2 muscles. Clinical trial registration number: NCT03016559.