Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes
Background: Shoulder joint function and the athletic performance of overhead athletes are influenced by scapular dyskinesis (SD) due to its high prevalence among these athletes and the motor interaction between the scapula and the arm. The present study investigated the prediction of SD through t...
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Shiraz University of Medical Sciences
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doaj-a758a8d72328441381a1de1d5d0d0b6b2020-11-25T02:36:07ZengShiraz University of Medical SciencesJournal of Rehabilitation Sciences and Research 2345-61592345-61592018-09-0105037480Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead AthletesLeila Ghanbari0Mohammad Hossein Alizadeh1Hooman Minoonejad2Seyed Hossein Hosseini3Department of Sports Injuries and Corrective Exercises, Kish International Campus, University of Tehran, Kish Island, IranDepartment of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Medicines, University of Tehran, Tehran, IranDepartment of Sports Injuries and Corrective Exercises, Faculty of Physical Education and Sport Medicines, University of Tehran, Tehran, IranDepartment of Sport Biomechanics, Faculty of Physical Education and Sport Medicines, University of Guilan, Rasht, IranBackground: Shoulder joint function and the athletic performance of overhead athletes are influenced by scapular dyskinesis (SD) due to its high prevalence among these athletes and the motor interaction between the scapula and the arm. The present study investigated the prediction of SD through the electromyographic indices of scapulothoracic muscles in female overhead athletes. Methods: The present descriptive-correlational study was carried out on 60 female volleyball, handball, basketball, and badminton athletes. The lateral scapular slide test was used to examine their SD. The required electromyography and electrogoniometry data was recorded simultaneously to measure the activity and onset time of scapulothoracic muscles, including upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA). The collected data was analyzed using Spearman correlation and multiple regression tests. Results: Significant correlations were found between all electromyographic variables and SD (P<0.01). The regression effects of all predictive variables on SD were significant (P=0.001). In terms of predictive power, UT/SA co-contraction (β=0.765), UT/LT co-contraction (β=0.716), LT onset time (β=0.672), LT activity (β=0.612), and SA onset time (β=0.576) had the highest regression effects on SD, respectively. The analysis of the study model showed that there was a strong correlation (r=0.694) between the predictive variables and SD and that the independent variables predicted 48% of the variance. Conclusion: The presence of imbalance in the scapulothoracic muscles of overhead athletes with SD indicates that athletes should be monitored by coaches, physiotherapists, and physicians for SD screening. It is also necessary to carry out prospective studies to examine and explore other variables related to SD.http://jrsr.sums.ac.ir/index.php/jrsr/article/view/310/147ElectromyographyMuscle onset timeOverhead athletesScapular dyskinesisScapulothoracic muscles |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leila Ghanbari Mohammad Hossein Alizadeh Hooman Minoonejad Seyed Hossein Hosseini |
spellingShingle |
Leila Ghanbari Mohammad Hossein Alizadeh Hooman Minoonejad Seyed Hossein Hosseini Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes Journal of Rehabilitation Sciences and Research Electromyography Muscle onset time Overhead athletes Scapular dyskinesis Scapulothoracic muscles |
author_facet |
Leila Ghanbari Mohammad Hossein Alizadeh Hooman Minoonejad Seyed Hossein Hosseini |
author_sort |
Leila Ghanbari |
title |
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes |
title_short |
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes |
title_full |
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes |
title_fullStr |
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes |
title_full_unstemmed |
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes |
title_sort |
prediction of scapular dyskinesis through electromyographic indices of scapulothoracic muscles in female overhead athletes |
publisher |
Shiraz University of Medical Sciences |
series |
Journal of Rehabilitation Sciences and Research |
issn |
2345-6159 2345-6159 |
publishDate |
2018-09-01 |
description |
Background: Shoulder joint function and the athletic performance of overhead
athletes are influenced by scapular dyskinesis (SD) due to its high prevalence
among these athletes and the motor interaction between the scapula and the arm.
The present study investigated the prediction of SD through the electromyographic
indices of scapulothoracic muscles in female overhead athletes.
Methods: The present descriptive-correlational study was carried out on 60
female volleyball, handball, basketball, and badminton athletes. The lateral
scapular slide test was used to examine their SD. The required electromyography
and electrogoniometry data was recorded simultaneously to measure the activity
and onset time of scapulothoracic muscles, including upper trapezius (UT),
lower trapezius (LT), and serratus anterior (SA). The collected data was analyzed
using Spearman correlation and multiple regression tests.
Results: Significant correlations were found between all electromyographic
variables and SD (P<0.01). The regression effects of all predictive variables on SD
were significant (P=0.001). In terms of predictive power, UT/SA co-contraction
(β=0.765), UT/LT co-contraction (β=0.716), LT onset time (β=0.672), LT activity
(β=0.612), and SA onset time (β=0.576) had the highest regression effects on
SD, respectively. The analysis of the study model showed that there was a strong
correlation (r=0.694) between the predictive variables and SD and that the
independent variables predicted 48% of the variance.
Conclusion: The presence of imbalance in the scapulothoracic muscles of
overhead athletes with SD indicates that athletes should be monitored by
coaches, physiotherapists, and physicians for SD screening. It is also necessary
to carry out prospective studies to examine and explore other variables related
to SD. |
topic |
Electromyography Muscle onset time Overhead athletes Scapular dyskinesis Scapulothoracic muscles |
url |
http://jrsr.sums.ac.ir/index.php/jrsr/article/view/310/147 |
work_keys_str_mv |
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