Breast size impacts spine motion and postural muscle activation
| Autor: | Alison Schinkel-Ivy, Janessa D.M. Drake |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Movement
medicine.medical_treatment Posture Population Physical Therapy Sports Therapy and Rehabilitation Electromyography medicine.disease_cause Young Adult 03 medical and health sciences 0302 clinical medicine medicine Back pain Humans Orthopedics and Sports Medicine Breast Muscle Skeletal skin and connective tissue diseases education education.field_of_study Rehabilitation medicine.diagnostic_test Poor posture business.industry Torso Organ Size 030229 sport sciences Anatomy Trunk Healthy Volunteers Spine medicine.anatomical_structure Female medicine.symptom business 030217 neurology & neurosurgery |
| Zdroj: | Journal of Back and Musculoskeletal Rehabilitation. 29:741-748 |
| ISSN: | 1878-6324 1053-8127 |
| Popis: | Background While it is generally accepted that large breast sizes in females contribute to back pain and poor posture, the effects of breast size on spinal motion and muscle activation characteristics are poorly understood. Objective This study examined the relationship between breast size, spine motion, and trunk muscle activation. Methods Fifteen university-aged females, free of back pain symptoms, were tested. Breast sizes were calculated, and three-dimensional spine motion and activation from five trunk muscles bilaterally were measured during standing and trunk flexion movements. Correlations between breast size and motion and muscle activation measures were assessed. Results Head and trunk angles were strongly, negatively correlated to breast size during upright standing; thoracic angles were moderately, positively correlated to breast size during thoracic flexion movements. Trunk muscles showed positive, moderate-strength relationships with breast size during upright standing and some trunk movements. Conclusions These findings provide a preliminary indication that increasing breast sizes are associated with altered postures and increased muscle activation in a non-clinical population, and constitute a baseline for the study of females with a full range of breast sizes. Further research is required to confirm the generalizability of these findings to other sizes, in order to inform strategies for the prevention or reduction of back pain, as well as diagnosis, treatment, and rehabilitation techniques associated with breast size and back pain. |
| Databáze: | OpenAIRE |
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