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Date Permissions Signed
12-8-2020
Date of Award
Fall 2020
Document Type
Masters Thesis
Department or Program Affiliation
Department of Health and Human Development
Degree Name
Master of Science (MS)
Department
Health and Human Development
First Advisor
Suprak, David N. (David Nathan)
Second Advisor
Brilla, Lorraine R., 1955-
Third Advisor
San Juan, Jun G.
Abstract
The purpose of this study was to measure differences in scapular kinematics and muscular activation, associated with shoulder stabilization and the oblique sling, as a result of changes in hip position. Scapular kinematics and muscular activation of the latissimus dorsi, infraspinatus, upper trapezius, lower trapezius, serratus anterior, and the contralateral gluteus maximus were measured during scapular plane humeral elevation. Subjects (n=25 male and female) were required to elevate the dominant arm up to 120º while remaining in the scapular plane and performed the following conditions in randomized order: standing bilateral hip extension, seated bilateral hip flexion, and seated unilateral hip flexion of the contralateral leg. A 3-way ANOVA was conducted to assess the interaction between degree of humeral elevation, condition, and muscle. Results I: Acute enhancement of scapular kinematics and muscle activation was not of statistical significance. The findings of this study do not support the involvement of the thoracolumbar fascia in force transmission between the gluteus maximus and the contralateral shoulder. Results II: Enhancement of scapular kinematics and muscle activation was of statistical significance. Since hip position affects shoulder motion practitioners might consider this in the rehabilitation of generalized shoulder injuries.
Type
Text
Keywords
Fascia, scapular kinematics, oblique sling, muscle activation, shoulder, hip
Publisher
Western Washington University
OCLC Number
1228455596
Subject – LCSH
Kinematics; Shoulder joint--Range of motion; Scapula--Physiological aspects; Muscles--Physiological aspects
Format
application/pdf
Genre/Form
masters theses
Language
English
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.
Rights Statement
http://rightsstatements.org/vocab/NKC/1.0/
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Recommended Citation
Pine, Sarah Elizabeth, "The Effects of Hip Position on Scapular Kinematics and Muscle Activation in the Oblique Sling: A Simulated Study" (2020). WWU Graduate School Collection. 1001.
https://cedar.wwu.edu/wwuet/1001