Scapular Muscle Recruitment and Isokinetic Force Production in Individuals with Impingement Syndrome
نویسندگان
چکیده
METHODS Recruitment patterns and latencies were determined by the electromyographic activity of the scapular stabilizer muscles (trapezius and serratus anterior) during shoulder elevation in the scapular plane. Isokinetic measures of muscular performance were determined by the antagonist/agonist work ratios of the medial (MR) and lateral rotators (LR) obtained with the dynamometer Biodex at speeds of 60 and 180°/s in the supine position. Descriptive statistics and tests for normality (Shapiro-Wilk) were performed for all outcome variables. ANOVA (2x2) was used to investigate side and group differences, as well as interactions, with a significance level of < 0.05.
منابع مشابه
Evaluation of isokinetic force production and associated muscle activity in the scapular rotators during a protraction-retraction movement in overhead athletes with impingement symptoms.
OBJECTIVES To determine if the muscle force and electromyographic activity in the scapular rotators of overhead athletes with impingement symptoms showed differences between the injured and non-injured sides. METHODS Isokinetic peak force was evaluated during protraction and retraction of the shoulder girdle, with simultaneous recording of electromyographic activity of the three trapezius mus...
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Background & Aims: Impingement syndrome is the most common injury and cause of movement limitations and pain in the shoulder area. The purpose of this study was to investigate the effect of eight weeks of focused scapular training on pain, electrical activity of shoulder muscles, and upper extremity performance in male volleyball players with shoulder impingement syndrome. Materials & Methods:...
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Objective Alteration of scapular position and motion is called scapular dyskinesis. Scapular dyskinesis is a common clinical problem. Strength of shoulder girdle muscles is important in shoulder motions and stability, so their weakness may lead to scapular dyskinesis. The aim of this study was to compare the maximum voluntary isometric force of shoulder girdle movements in subjects with and wit...
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BACKGROUND AND PURPOSE Several factors such as posture, muscle force, range of motion, and scapular dysfunction are commonly believed to contribute to shoulder impingement. The purpose of this study was to compare 3-dimensional scapular kinematics, shoulder range of motion, shoulder muscle force, and posture in subjects with and without primary shoulder impingement syndrome. SUBJECTS Forty-fi...
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Introduction: Internal Shoulder impingement is one of the most common problems in athletes with postural asymmetry. The present study aimed to investigate the effect of postural restoration exercises on patients' disabilities and the torque of the shoulder rotator muscles. Materials and Methods: In this clinical trial study, 23 patients with internal shoulder entrapment were randomly divided in...
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