Differences in Scapular Orientation Between Standing and Sitting Postures at Rest and in 120° Scaption: A Cross-Sectional Study
MetadataShow full item record
Background: Scapular orientation may be influenced by static body posture (sitting and standing) and contribute to the development of shoulder pain. Therefore, a consistent body posture should be considered when assessing scapular orientation as well as enhancing optimal scapular positioning. Objective: To determine whether there are differences in scapular orientation between standing, neutral sitting, and habitual sitting, while adjusting for spinal posture. Design: A single group randomized repeated measures study. Setting: University laboratory. Participants: Twenty-eight participants with shoulder pain were recruited from the community. Methods: Scapular orientation between standing and seated positions was compared, with the arm by the side and at 120° of glenohumeral scaption. Thoracic kyphosis and lumbar lordosis angles were used as covariates. Main Outcome Measurements: Scapular elevation, lateral translation, upward rotation, and posterior tilt. Results: Scapular orientation was marginally but significantly different between sitting postures for lateral translation (mean 0.5 cm; 95% confidence interval [95% CI] 0.2-0.7 cm); P < .001), upward rotation (mean 3°; 95% CI 1.1-5.0°; P < .001), and posterior tilt (mean 2.3°; 95% CI 0.2-4.3°; P = .009) in the arm by side position. A small-but-significant difference between standing and neutral sitting was found for upward rotation (mean 1.8°; 95% CI 0-3.7°; P = .02), and between standing and habitual sitting for lateral translation (mean 0.6 cm; 95% CI 0-1.1 cm; P =.02) in the arm by side position. Conclusions: The results of this study suggest that scapular orientation can be slightly affected by body posture, although the clinical relevance is uncertain. To enhance scapular upward rotation or posterior tilt, it may be preferable to place the patient in neutral sitting.
Showing items related by title, author, creator and subject.
Differences in Scapular Orientation Between Standing and Sitting Postures at Rest and in 120 degrees Scaption: A Cross-Sectional StudyMcKenna, Leanda; Cornwall, X.; Williams, Sian (2017)Background: Scapular orientation may be influenced by static body posture (sitting and standing) and contribute to the development of shoulder pain. Therefore, a consistent body posture should be considered when assessing ...
Lumbar spine side bending is reduced in end range extension compared to neutral and end range flexion posturesEbert, Ryan; Campbell, Amity; Kemp-Smith, Kevin; O'Sullivan, Peter (2014)Lumbar side bending movements coupled with extension or flexion is a known low back pain (LBP) risk factor in certain groups, for example, athletes participating in sports such as hockey, tennis, gymnastics, rowing and ...
The influence of changes in trunk and pelvic posture during single leg standing on hip and thigh muscle activation in a pain free populationPrior, S.; Mitchell, T.; Whiteley, R.; O'Sullivan, Peter; Williams, B.; Racinais, S.; Farooq, A. (2014)Background: Thigh muscle injuries commonly occur during single leg loading tasks and patterns of muscle activation are thought to contribute to these injuries. The influence trunk and pelvis posture has on hip and thigh ...