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
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Shoulder range of motion (measured with goniometer)
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 20 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •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
排除标准
- •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
研究组 & 干预措施
Eccentric-focused exercise group
Three eccentric-focused exercises addition to the general treatment group
干预措施: Hot pack (Other)
Eccentric-focused exercise group
Three eccentric-focused exercises addition to the general treatment group
干预措施: Massage (Other)
General treatment group
hot pack application on shoulder region upper trapezius massage two stretching exercises (modified sleeper stretch and modified cross-body stretch)
干预措施: Stretching exercises (Other)
General treatment group
hot pack application on shoulder region upper trapezius massage two stretching exercises (modified sleeper stretch and modified cross-body stretch)
干预措施: Hot pack (Other)
General treatment group
hot pack application on shoulder region upper trapezius massage two stretching exercises (modified sleeper stretch and modified cross-body stretch)
干预措施: Massage (Other)
Eccentric-focused exercise group
Three eccentric-focused exercises addition to the general treatment group
干预措施: Stretching exercises (Other)
Eccentric-focused exercise group
Three eccentric-focused exercises addition to the general treatment group
干预措施: Eccentric-focused exercises (Other)
结局指标
主要结局
Shoulder range of motion (measured with goniometer)
时间窗: 4 weeks
Shoulder external rotation, internal rotation, horizontal adduction range of motion in shoulder flexion 90 degrees
Rotator cuff functional strength ratio (Pro 4, Biodex Medical Systems, Inc., Shirley, NY, USA)
时间窗: 4 weeks
Eccentric strength of shoulder external rotator and concentric strength of shoulder internal rotator are measured with isokinetic
Shoulder pain
时间窗: 4 weeks
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.
Shoulder function
时间窗: 4 weeks
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.
Shoulder endurance test
时间窗: 4 weeks
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).
次要结局
- Surface electromyography (TeleMyo 2400T G2, Noraxon USA Inc., Scottsdale, AZ, USA)(4 weeks)
- Electromagnetic tracking system (Liberty electromagnetic tracking system, Polhemus , Colchester, VT,)(4 weeks)