Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2018) 17, 7 - 16

Research article
The Effects of Double Oscillation Exercise Combined with Elastic Band Exercise on Scapular Stabilizing Muscle Strength and Thickness in Healthy Young Individuals: A Randomized Controlled Pilot Trial
Jieun Cho1, Kyeongbong Lee2, Minkyu Kim3, Joohee Hahn1, Wanhee Lee4 
Author Information
1 Department of Physical Therapy, The Graduate School, Sahmyook University,
2 Department of Physical & Rehabilitation, Samsung Medical Center,
3 Department of Physical Therapy, Myongji Choonhey Rehabilitation Hospital,
4 Department of Physical Therapy, College of Health and Welfare, Sahmyook University, Seoul, Republic of Korea

Wanhee Lee
✉ Department of Physical Therapy, Sahmyook University College of Health Science815, Hwarang-ro, Nowon-gu, Seoul, 01795 Rep. of Korea
Email: whlee@syu.ac.kr
Publish Date
Received: 30-11-2016
Accepted: 27-11-2017
Published (online): 01-03-2018
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ABSTRACT

This study aimed to investigate the effect of double oscillation exercise combined with elastic band exercise on the strength and thickness ratio of the scapular stabilizing muscles in healthy young individuals. A total of 30 subjects (17 male, 13 female) were randomly assigned to an elastic band exercise group (EBG) (n = 15) or an elastic band plus double oscillation exercise group (EB-DOG) (n = 15). A total of 28 subjects completed the experiment and evaluation. Patients in the EBG performed the elastic band exercise for shoulder flexion, extension, abduction, adduction, horizontal abduction/adduction, and internal/external rotation for 30 minutes/session, five times/week, for four weeks. Patients in the EB-DOG performed the elastic band exercise for 15 minutes and the double oscillation exercise in three planes of motion (frontal, sagittal, and transverse), using a Bodyblade® for 15 minutes/session, five times/week, for four weeks. Shoulder muscle strength was assessed using a manual muscle test device during maximal voluntary isometric contraction (MVIC), while the thicknesses of the scapular stabilizing muscles were assessed using rehabilitative ultrasound imaging both at rest and during MVIC. Both groups had significant effects on shoulder muscle strength, however, there was no significant difference between the two groups for change value of shoulder muscle strength (Bonferroni correction p < 0.005). Significant differences were observed in the group × time interactions for horizontal abduction, external rotation, and protraction. There was a statistically significant improvement in thickness ratio of LT and SA in the EB-DOG and no significant difference was founded in EBG (Bonferroni correction p < 0.006). In comparison between the two groups, EB-DOG showed a significant change in the thickness ratio of LT compared to EBG. In addition, significant differences were observed for the group × time interactions for the thickness ratio of the LT (F = 12.177, P = 0.002; Bonferroni correction p < 0.006). The double oscillation exercise combined with elastic band exercise more effectively increased the thickness of the shoulder stabilizing muscles compared with the resistance exercise alone.

Key words: Shoulder stabilizer, rotator cuff, oscillation exercises, upper extremity, muscle strength, ultrasonography


           Key Points
  • The double oscillation plus elastic band exercises significantly affected the thickness ratio of the shoulder stabilizing muscles.
  • The combination of resistance and oscillation exercises may be more effective on structural changes of the shoulder stabilizing muscles than resistance exercise alone.
  • Double oscillation exercises in the upper limb are effective in improving shoulder stability.
 
 
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