Title of article :
Comparing Shoulder Joint Functional Range of Motion in Overhead Athletes with and without Shoulder Impingement Syndrome: A Cross-Sectional Study
Author/Authors :
Saadatian, Aboozar Department of Sport Injury and Corrective Exercises - Faculty of Physical Education Sport Sciences - Shahid Bahonar University of Kerman , Sahebozamani, Mansour Department of Sport Injury and Corrective Exercises - Faculty of Physical Education Sport Sciences - Shahid Bahonar University of Kerman , Amiri Khorasani, Mohammad Taghi Department of Sport Biomechanics - Faculty of Sport Science - Shahid Bahonar University of Kerman , Karimi, Mohammad Taghi Orthotics and Prosthetics Department - School of Rehabilitation Sciences - Shiraz University of Medical Sciences , Sadeghi, Mohammad Department of Physical Therapy - Faculty of Allied Medicine - Kerman University of Medical Sciences
Abstract :
Background: The shoulder complex is known as one of the most mobile joints of
body whose frequently use for overhead movements causes changes in the shoulder
joint range of motion. Sub-acromial impingement syndrome (SIS) is one of the
most common causes of shoulder pain affecting shoulder joint range of motion.
The purpose of this study was to compare shoulder joint functional range of
motion in overhead athletes with and without Shoulder impingement syndrome.
Methods: The current research is a cross-sectional study, in which 63 male
overhead athletes (30 subjects without impingement syndrome (age: 28.12±6.13
y/o) and 33 subjects with impingement syndrome (age: 26.83±4.81 y/o)) threw a
handball ball three times, while seating on a chair. A 6-camera Vicon Motion
Capture system recorded the markers placed on the upper limb and trunk during
each of the throwing conditions. To evaluate the range of motion, a whole-body
kinematic model was used in OpenSim software, with inverse kinematics used
to obtain adequate joint angles (shoulder joint abduction as well as internal and
external rotation).
Results: The results indicated that the external rotation and abduction range
of motion were greater in the athletes with shoulder impingement syndrome in
comparison to those without impingement syndrome (P <0/001 and p= 0.04,
respectively), while their internal rotation range of motion were more limited
than that of athletes without impingement syndrome (p<0/001).
Conclusion: Overhead athletes with impingement syndrome have greater
glenohumeral external rotation and abduction and less internal rotation in the
throwing shoulder in comparison to athletes without impingement syndrome.
These findings can be used to screen and identify high-risk athletes and help
the therapists to make more appropriate therapeutic plans in order to assist the
injured athlete to return to sports as soon as possible.
Keywords :
Shoulder joint , Functional range of motion , Overhead athlete , Impingement syndrome
Journal title :
Astroparticle Physics
