The effect of sensorimotor training on shoulder range of motion and round shoulder posture of male volleyball players with scapular dysknesia

Subject Areas :

Tohid Partoie ¹ , Sajad Roshani ² , Hadi Abbaszadeh Ghanati ³ , Paulo Marchetti ⁴

1 - Department of Physiology Education Sports Sciences, Urmia University, Urmia, Iran.
2 -
3 - Department of biomechanics and sport pathology, kharazmi university of Tehran, Tehran, Iran.
4 - Department of kinesiology, California state university- Northridge, CA, USA

Received: 2024-10-01 Accepted : 2024-10-07 Published : 0001-01-01

Keywords: Scapular dysknesia, Volleyball, Posture,

Abstract :

Introduction: Shoulder movement disorders are common in volleyball players. The aim of this study was the effect of sensorimotor exercises on shoulder range of motion and forward shoulder position of male volleyball players with scapular dysknesia.

research methodology: In this semi-experimental study, 30 male volleyball players with scapular dyskinesia were divided into two equal control and training groups. The training group performed the sensorimotor training program for 8 weeks and 3 sessions per week. . Before and after the training intervention, the range of motion was evaluated using a goniometer and the round shoulder position was evaluated using photography and Quinoa software. ANCOVA test was used to check the changes in the effect of exercise intervention in the post-test.

Findings: The results of ANOCVA test in examining the range of motion of internal rotation (p=0.001) and external rotation (p=0.001) indicated the significance of the effect of sensorimotor training. Also, the results showed that exercise intervention has a significant effect on improving the round  shoulder position (p=0.001).

Conclusion: Sensorimotor training are a suitable intervention to improve the position of the shoulder and improve the posture of the shoulder girdle. After improving the position of the shoulder, the range of motion of the internal and external rotation of the shoulder improves in volleyball players. Therefore, performing these exercises is recommended to volleyball coaches and athletes.

References:

1. Ahmadzadeh H, Roshani S, Rouhani A. Comparison of the rounded shoulder, kyphosis postures, and glenohumeral range of motion in patients with primary and secondary frozen shoulder. Journal of Bodywork and Movement Therapies. 2024;40:6-10
2. Bayattork M, Seidi F, Minoonejad H, McClure P, Mozafaripoor E. Intra-rater and inter-rater reliability and agreement of the scapular dyskinesis test in young men with forward head and round shoulder posture. Journal of Rehabilitation Sciences & Research. 2019;6(4):169-73.
3. Ben Kibler W. The role of the scapula in athletic shoulder function. The American journal of sports medicine. 1998;26(2):325-37.
4. Clarsen B, Bahr R, Andersson SH, Munk R, Myklebust G. Reduced glenohumeral rotation, external rotation weakness and scapular dyskinesis are risk factors for shoulder injuries among elite male handball players: a prospective cohort study. British journal of sports medicine. 2014;48(17):1327-33.
5. Cools A, Declercq G, Cambier D, Mahieu N, Witvrouw E. Trapezius activity and intramuscular balance during isokinetic exercise in overhead athletes with impingement symptoms. Scandinavian journal of medicine & science in sports. 2007;17(1):25-33.
6. Ebaugh DD, Spinelli BA. Scapulothoracic motion and muscle activity during the raising and lowering phases of an overhead reaching task. Journal of Electromyography and Kinesiology. 2010;20(2):199-205..
7. Firouzjah MH, Firouzjah EMAN, Ebrahimi Z. The effect of a course of selected corrective exercises on posture, scapula-humeral rhythm and performance of adolescent volleyball players with upper cross syndrome. BMC Musculoskeletal Disorders. 2023;24(1):489.
8. Gruber M, Gruber SB, Taube W, Schubert M, Beck SC, Gollhofer A. Differential effects of ballistic versus sensorimotor training on rate of force development and neural activation in humans. The Journal of Strength & Conditioning Research. 2007;21(1):274-82.
9. Hajihosseini E, Norasteh AA, Daneshmandi H. Comparison of isometric strength and functional stability of shoulder girdle muscles in volleyball women players with and without scapular dyskinesia. Journal of Health Promotion Management. 2019;8(5):24-32.
10. Hannah DC, Scibek JS, Carcia CR. Strength profiles in healthy individuals with and without scapular dyskinesis. International journal of sports physical therapy. 2017;12(3):305.
11. Karimi R, Mohammad Ali Nasab Firouzjah E. The effect of a period of scapular stabilization exercises on pain, shoulder position and performance of volleyball players with scapular dyskinesia. Journal of Rehabilitation Sciences & Research. 2023.
12. Manokas S, Amasay T, Arbel V, editors. The effect of scapular dyskinesis on upper quarter y-balance test performance. International Journal of Exercise Science: Conference Proceedings; 2020.
13. Merolla G, De Santis E, Sperling JW, Campi F, Paladini P, Porcellini G. Infraspinatus strength assessment before and after scapular muscles rehabilitation in professional volleyball players with scapular dyskinesis. Journal of shoulder and elbow surgery. 2010;19(8):1256-64.
14. Page P, Frank CC, Lardner R. Assessment and treatment of muscle imbalance. (No Title). 2010.
15. Reeser JC, Joy EA, Porucznik CA, Berg RL, Colliver EB, Willick SE. Risk factors for volleyball-related shoulder pain and dysfunction. Pm&r. 2010;2(1):27-36.
16. Wang C-H, McClure P, Pratt NE, Nobilini R. Stretching and strengthening exercises: their effect on three-dimensional scapular kinematics. Archives of physical medicine and rehabilitation. 1999;80(8):923-9.