Does posture of the cervical spine influence dorsal neck muscle activity when lifting?
| Autor: | Michael Peolsson, Tim McNamara, Gwendolen Jull, Eivind Marstein, Shaun O'Leary, Anneli Peolsson, Espen Sjaaberg, Damien Nolan |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Male Dorsum Weight Lifting Posture Physical Therapy Sports Therapy and Rehabilitation Cohort Studies Young Adult Neck Muscles Reference Values Image Processing Computer-Assisted Humans Medicine Prospective Studies Range of Motion Articular Muscle activity business.industry Healthy subjects Ultrasonography Doppler General Medicine Anatomy Neck muscles Cervical spine Biomechanical Phenomena Neutral spine body regions Forward head posture Upper limb activities Cervical Vertebrae Female business human activities Muscle Contraction |
| Zdroj: | Manual Therapy. 19:32-36 |
| ISSN: | 1356-689X |
| Popis: | Previous studies have shown that postural orientations of the neck, such as flexed or forward head postures, are associated with heightened activity of the dorsal neck muscles. While these studies describe the impact of variations in neck posture alone, there is scant literature regarding the effect of neck posture on muscle activity when combined with upper limb activities such as lifting. The purpose of this study was to evaluate the effect of three different neck postures on the activity of the different layers of the dorsal neck muscles during a lifting task. Ultrasound measurements of dorsal neck muscle deformation were compared over two time points (rest, during lift) during a lifting task performed in three different neck postural conditions (neutral, flexed and forward head posture) in 21 healthy subjects. Data were analysed by post-process speckle tracking analysis. Results demonstrated significantly greater muscle deformation induced by flexed and forward head postures, compared to the neutral posture, for all dorsal neck muscles at rest (p |
| Databáze: | OpenAIRE |
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