Off-campus Pacific University users: To download campus access theses and dissertations, please log into our proxy server with your PUNet ID and password.

Non-Pacific University users: Please talk to your librarian about requesting this thesis or dissertation through interlibrary loan.

Theses or dissertations that have a specific embargo period indicated below will not be available to anyone until the date indicated.

Date of Award

5-1998

Degree Type

Capstone Project (On-Campus Access Only)

Degree Name

Master of Science in Physical Therapy

First Advisor

John Medeiros, PhD, PT

Second Advisor

Richard Rutt, PhD, PT

Abstract

The purpose of this study was to determine the balance between the suprascapular and infrascapular muscles (SS :IS) to better direct clinicians in the development of shoulder rehabilitation programs. This was accomplished by using surface electromyography (SEMG) to identify common ratios during 3 exercises in seventy-three subjects without known shoulder pathology. Mean, standard deviation, standard error, and p-values were calculated for each of the three exercises. Subjeqts demonstrated suprascapular dominance with scaption (1.32:1) and infrascapular dominance with press-up (1 :5) and rowing (0.75:1). Standard error for scaption, press-up, and rowing were 0.1 , 0,.02, and 0.08 respectively. Rectified, smoothed and demeaned SEMG for each;: exercise revealed similar trace patterns among subjects suggesting common ratios within each exercise. Based on these results, success in shoulder rehabilitation programs may be enhanced when treatment is structured around restoring and maintaining the balance of scapular musculature, as opposed to blindly employing unfocused strengthening protocols.

Comments

The digital version of this project is currently unavailable to off-campus users not affiliated with Pacific University; however, it may be accessed on campus or through interlibrary loan (for eligible borrowers) from Pacific University Library. Pacific University Library is a free lender.

Share

COinS