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- Title
Experimentally Induced Pain Results in Reduced Activity of the Rotator Cuff Muscles in Healthy Subjects.
- Authors
Cooper, Jennifer L.; Karduna, Andrew R.
- Abstract
Shoulder pain is a complex, prevalent problem that is multifactorial in nature. While there are many potential causes, one common suspect is the rotator cuff musculature. The purpose of the present study was to induce pain in the supraspinatus muscle of healthy subjects and observe the resulting changes in muscle activity. Eight muscles on 23 subjects were assessed using electromyography: anterior, middle, and posterior deltoid; pectoralis major; upper trapezius; latissimus dorsi; serratus anterior; supraspinatus; and infraspinatus. It was hypothesized that the rotator cuff muscles would display reduced activity during pain, and that reductions in activity would remain after the pain had dissipated. Both of the rotator cuff muscles measured did indeed display reduced activity in a majority of the dynamic, isometric, and maximal contractions. Many of those reductions remained after the pain had subsided.
- Subjects
SUPRASPINATUS muscles; PAIN; SERRATUS anterior muscles; TRAPEZIUS muscle; MUSCULOSKELETAL system physiology; PECTORALIS muscle; LATISSIMUS dorsi (Muscles); DELTOID muscles; BIOMECHANICS; ELECTROMYOGRAPHY; ROTATOR cuff
- Publication
Journal of Applied Biomechanics, 2024, Vol 40, Issue 1, p73
- ISSN
1065-8483
- Publication type
Article
- DOI
10.1123/jab.2022-0006