Comparison of the Effects of Concentric and Eccentric Full Can Exercises on Supraspinatus Muscle Architecture in Individuals With Partial Rotator Cuff Tears
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 60
- 试验地点
- 2
研究概览
简要总结
This study aims to compare the effects of concentric and eccentric full can exercises on supraspinatus muscle architecture in individuals with partial rotator cuff tears.
Rotator cuff tears are a common cause of shoulder pain and functional limitation. The supraspinatus muscle plays a key role in shoulder movement and stability, and its structure may be affected in individuals with partial tears.
Exercise-based rehabilitation is widely used in the conservative management of these conditions. The full can exercise is commonly prescribed to selectively activate the supraspinatus muscle. However, the effects of different contraction types, specifically concentric and eccentric exercises, on muscle structure and clinical outcomes are not fully understood.
In this study, participants will be randomly assigned to either a concentric or eccentric full can exercise group. Both groups will receive a standard physiotherapy program, including therapeutic ultrasound and transcutaneous electrical nerve stimulation (TENS), in addition to the assigned exercise protocol.
The intervention will last for 6 weeks, with sessions performed three times per week. Outcomes will be assessed before and after the intervention.
The primary outcome is the change in supraspinatus muscle pennation angle measured by ultrasound imaging. Secondary outcomes include muscle architecture parameters, pain intensity, range of motion, muscle strength, functional status, and kinesiophobia.
The findings of this study may help improve exercise selection in the rehabilitation of individuals with rotator cuff tears.
详细描述
Study Design and Setting This study is designed as a prospective, randomized, assessor-blinded, parallel-group clinical trial. The study will be conducted at Firat University Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, and Fethi Sekin City Hospital, Department of Physical Medicine and Rehabilitation.
Participants A total of 60 individuals aged between 18 and 65 years with a diagnosis of partial supraspinatus tendon tear confirmed by ultrasound or magnetic resonance imaging will be included. Participants will be randomly allocated into two groups (n=30 per group).
Randomization and Blinding Participants will be assigned to groups using a computer-generated randomization sequence. Allocation will be concealed using sealed, opaque envelopes. Outcome assessments will be performed by a blinded assessor.
Interventions
Both groups will receive a standard physiotherapy program including:
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 (Outcomes Assessor)
盲法说明
Outcome assessments will be performed by a physiotherapist who is blinded to group allocation. Participants and care providers will not be blinded due to the nature of the exercise interventions.
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Aged between 18 and 65 years
- •Diagnosed with partial supraspinatus tendon tear confirmed by ultrasound or magnetic resonance imaging
- •Shoulder pain lasting at least 3 months
- •Pain intensity ≥3 on the Visual Analog Scale (VAS)
- •Willing to participate and provide informed consent
排除标准
- •Full-thickness rotator cuff tear
- •History of shoulder surgery
- •Shoulder instability
- •Neurological disorders
- •Rheumatological diseases
- •Corticosteroid injection within the last 3 months
- •Inability to adhere to the exercise program
研究组 & 干预措施
Concentric Exercise Group
Participants will receive a standard physiotherapy program including ultrasound, TENS, and shoulder rehabilitation exercises, combined with concentric full can exercises. The concentric phase (lifting) will be emphasized, while the eccentric phase will be minimally loaded.
干预措施: Concentric Full Can Exercise (Other)
Concentric Exercise Group
Participants will receive a standard physiotherapy program including ultrasound, TENS, and shoulder rehabilitation exercises, combined with concentric full can exercises. The concentric phase (lifting) will be emphasized, while the eccentric phase will be minimally loaded.
干预措施: Standard Physiotherapy Program (Other)
Eccentric Exercise Group
Participants will receive a standard physiotherapy program including ultrasound, TENS, and shoulder rehabilitation exercises, combined with eccentric full can exercises. The eccentric phase (lowering) will be emphasized, while the concentric phase will be minimally loaded.
干预措施: Eccentric Full Can Exercise (Other)
Eccentric Exercise Group
Participants will receive a standard physiotherapy program including ultrasound, TENS, and shoulder rehabilitation exercises, combined with eccentric full can exercises. The eccentric phase (lowering) will be emphasized, while the concentric phase will be minimally loaded.
干预措施: Standard Physiotherapy Program (Other)
研究者
Muharrem Gökhan Beydağı
Assistant Professor, PhD
Firat University