The Effects of Eccentric-focused Exercise on Posterior Shoulder Tightness in Symptomatic Overhead Athletes

Posterior Shoulder Tightness Clinical Trial

Official title:

The Effects of Eccentric-focused Exercise on Shoulder Mobility, Rotator Cuff Strength, Pain and Dysfunction, Scapular Kinematics and Muscle Activation in Symptomatic Overhead Athletes With Posterior Shoulder Tightness

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05305196
• Other study ID #: YM110191F
• Status: Recruiting
• Phase: N/A
• Start date: November 9, 2022
• Est. completion date: August 31, 2023

Study information

• Verified date: March 2023
• Source: National Yang Ming University
• Contact: ShaoYang Huang, Master
• Phone: (886)939878335
• Email: kevinhuang870618[@]gmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The aim of this study is to investigate the effects of shoulder eccentric exercise training on shoulder mobility, rotator cuff strength, pain and dysfunction, scapular kinematics and muscle activation in symptomatic overhead athletes with posterior shoulder tightness.

Description:

Overhead athletes commonly have posterior shoulder tightness due to repetitively high tensile loading during overhead throwing. However, intervention studies focused on posterior shoulder tightness in people with subacromial pain are still limited. Additionally, eccentric exercise was thought to improve the eccentric strength and neuromuscular control of posterior shoulder muscles to endure repetitively eccentric loading, which may improve posterior shoulder tightness and decrease the risk of subacromial pain. Nevertheless, no previous study investigated the influence of eccentric exercise on posterior shoulder tightness in overhead athletes. The aim of this study is to investigate the effects of shoulder eccentric exercise training on shoulder mobility, rotator cuff strength, pain and dysfunction, scapular kinematics and muscle activation in symptomatic overhead athletes with posterior shoulder tightness.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 40
• Est. completion date: August 31, 2023
• Est. primary completion date: August 22, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 20 Years to 50 Years

Eligibility

Inclusion Criteria:

• Participate in overhead sports over 4 hours per week
• Age between 20 to 50 years old
• Glenohumeral joint range of motion deficit: Shoulder internal rotation loss more than 15 degrees compared to the non-dominant side and total arc of motion loss more than 5 degrees or/and horizontal adduction range of motion lo more than 15 degrees compared to the non-dominant side
• Shoulder impingement syndrome criteria

Exclusion Criteria:

• History of shoulder dislocation, fracture and operation
• History of direct contact in upper extremities or cervical region in the past one month
• Shoulder pain or neurological symptom caused by cervical problem
• VAS more than 5 during shoulder elevation
• Receive treatment for posterior shoulder tightness in the past 3 months

Related Conditions & MeSH terms

• Posterior Shoulder Tightness

Intervention

Other:
• Eccentric-focused exercises
Three eccentric-focused exercises: Shoulder external rotator eccentric contraction in shoulder abduction 90 degree Shoulder external rotator eccentric contraction in shoulder abduction 0 degree Shoulder abductor eccentric contraction in shoulder abduction 90 degree
• Stretching exercises
Modified sleeper stretch Modified cross-body stretch
• Hot pack
Hot pack application on shoulder region
• Massage
Massage for upper trapezius

Locations

Country	Name	City	State
Taiwan	National Yang Ming Chiao Tung University	Taipei	Beitou

Sponsors (1)

Lead Sponsor	Collaborator
National Yang Ming University

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Shoulder range of motion (measured with goniometer)	Shoulder external rotation, internal rotation, horizontal adduction range of motion in shoulder flexion 90 degrees	4 weeks
Primary	Rotator cuff functional strength ratio (Pro 4, Biodex Medical Systems, Inc., Shirley, NY, USA)	Eccentric strength of shoulder external rotator and concentric strength of shoulder internal rotator are measured with isokinetic	4 weeks
Primary	Shoulder pain	Pain is measured with Visual Analogue scale (VAS) Score range from 0 to 10. Scoring of 0 represents no pain and scoring of 10 represents pain as bad as it could possibly be.	4 weeks
Primary	Shoulder function	Shoulder function is measured with Disability of the Arm, Shoulder and Hand questionnaire (DASH) Score range from 0 to 100. The higher of the score, the more disability.	4 weeks
Primary	Shoulder endurance test	Participants will be instructed to execute a shoulder endurance test with the theraband®. Participants are asked to place their tested arm in a shoulder forward flexion 90-degree position, holding a 1-m long theraband® fixed at shoulder height on a graduated stick. Then, they are asked to pull the theraband® from the starting position to a 90-90 ending position at an alternated cadence given by a metronome. Males were asked to pull a green theraband® (2.1 kg) and females a red theraband ® (1.7 kg).	4 weeks
Secondary	Electromagnetic tracking system (Liberty electromagnetic tracking system, Polhemus , Colchester, VT,)	Scapular kinematics during shoulder elevation task in scapular plane	4 weeks
Secondary	Surface electromyography (TeleMyo 2400T G2, Noraxon USA Inc., Scottsdale, AZ, USA)	Muscle activation of infraspinatus, upper trapezius, lower trapezius and serratus anterior during shoulder elevation task in scapular plane	4 weeks