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Effects of forward head and rounded ...

Thigpen, Charles A.

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Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination./
Author:	Thigpen, Charles A.
Description:	271 p.
Notes:	Adviser: Darin Padua.
Contained By:	Dissertation Abstracts International67-02B.
Subject:	Health Sciences, Occupational Health and Safety. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3207361
ISBN:	9780542545320

Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination.
Thigpen, Charles A.

Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination. - 271 p.

Adviser: Darin Padua.

Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2006.

Forward head and rounded shoulder posture (FHRSP) has been identified as a potential risk factor for the development of shoulder pain. The mechanism through which forward head and rounded shoulder can facilitate shoulder injury is not well understood. Altered scapular kinematics, muscle activity, and shoulder joint coordination due to FHRSP may lead to the development of shoulder pain. However, there is little evidence to support the influence of FHRSP on scapular kinematics, muscle activity, and shoulder joint coordination. Therefore, the purpose of this study was to compare scapular kinematics, muscle activity, and shoulder joint coordination in individuals with and without FHRSP.

ISBN: 9780542545320Subjects--Topical Terms:

1017799
Health Sciences, Occupational Health and Safety.

Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination.
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020 $a 9780542545320
035 $a (UMI)AAI3207361
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040 $a UMI $c UMI
100 1 $a Thigpen, Charles A. $3 1293186
245 1 0 $a Effects of forward head and rounded shoulder posture on scapular kinematics, muscle activity, and shoulder coordination.
300 $a 271 p.
500 $a Adviser: Darin Padua.
500 $a Source: Dissertation Abstracts International, Volume: 67-02, Section: B, page: 0850.
502 $a Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2006.
520 $a Forward head and rounded shoulder posture (FHRSP) has been identified as a potential risk factor for the development of shoulder pain. The mechanism through which forward head and rounded shoulder can facilitate shoulder injury is not well understood. Altered scapular kinematics, muscle activity, and shoulder joint coordination due to FHRSP may lead to the development of shoulder pain. However, there is little evidence to support the influence of FHRSP on scapular kinematics, muscle activity, and shoulder joint coordination. Therefore, the purpose of this study was to compare scapular kinematics, muscle activity, and shoulder joint coordination in individuals with and without FHRSP.
520 $a Eighty volunteers without shoulder pain were classified as having FHRSP or ideal posture. An electromagnetic tracking system together with hard-wired surface electromyography was used to collect three-dimensional scapular kinematics concurrently with muscle activity of the upper and lower trapezius as well as the serratus anterior during loaded shoulder flexion and an overhead reaching task. Separate mixed model analyses of variance were used to compare three dimensional scapular kinematics, muscle activity, and shoulder joint coordination during the ascending and descending phases of the loaded flexion and overhead reaching tasks.
520 $a Individuals with FHRSP displayed significant increases in scapular upward rotation, internal rotation, and anterior tipping during the loaded flexion and reaching tasks. Significant decreases in serratus anterior muscle activation during the ascending phase of the flexion and reaching tasks were also noted. These scapular kinematic and muscle activation patterns are similar to those reported in individuals with shoulder pain. Additionally, uncoupled scapulohumeral coordination strategies were also observed for scapular upward rotation and anterior tipping. The observed uncoupling suggests an out-of-phase relationship between the humerus and these scapular rotations in individuals with FHRSP. Considered together, these results suggest FHRSP influences scapular kinematics, muscle activity, and shoulder joint coordination. FHRSP and its effects on shoulder kinematics, muscle activity, and shoulder coordination should be examined as a potential risk factor in the development of shoulder pain. Assessment and treatment of FHRSP should be considered in the prevention and interventions of shoulder pain.
590 $a School code: 0153.
650 4 $a Health Sciences, Occupational Health and Safety. $3 1017799
650 4 $a Health Sciences, Recreation. $3 1018003
650 4 $a Health Sciences, Rehabilitation and Therapy. $3 1017926
690 $a 0354
690 $a 0382
690 $a 0575
710 2 0 $a The University of North Carolina at Chapel Hill. $3 1017449
773 0 $t Dissertation Abstracts International $g 67-02B.
790 $a 0153
790 1 0 $a Padua, Darin, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3207361