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NCT Number: NCT07727941

The Effect of Eccentric Isokinetic Exercise in Shoulder Tendinopathies

To evaluate the effects of an eccentric isokinetic exercise program on shoulder pain, function, and ultrasonographic supraspinatus muscle architecture in patients with rotator cuff tendinopathy, and to compare outcomes with a standardized home exercise program.

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Key information

Conditions

Rotator Cuff Tendinopathy Rehabilitation Exercise

Age range

20 year–50 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Prof. Dr. Cemil Taşcıoğlu City Hospital, Istanbul, şişli, Turkey (Türkiye)

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About this study

This study aims to evaluate the effects of eccentric isokinetic exercise on pain, shoulder function, and supraspinatus muscle architecture parameters in individuals diagnosed with rotator cuff tendinopathy. The study's primary hypothesis is that controlled eccentric isokinetic loading will induce measurable architectural adaptations in the supraspinatus muscle, in addition to clinical improvement.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Being between the ages of 20 and 50

  • Having a diagnosis of rotator cuff tendinopathy based on medical history, physical examination, and MRI findings
  • Having full shoulder joint range of motion
  • Absence of upper extremity deformity that would interfere with ultrasonographic measurement
  • Having provided written informed consent

Exclusion criteria

Glenohumeral instability

  • Adhesive capsulitis (stages 2-3)
  • Radiographic evidence of calcific tendinitis or significant bursitis •Cervical radiculopathy Upper extremity or spinal deformities
  • History of surgery involving the shoulder, cervical spine, or back
  • Neurological or systemic disease (rheumatological, metabolic, etc.)
  • Physical therapy for the shoulder, neck, or back region within the last 6 months
  • Corticosteroid injection into the affected shoulder within the last 6 months
  • Exposure to intensive repetitive shoulder movements in sports or occupational activities
  • Use of medications that could affect exercise performance or metabolic response

Treatment and study plan

Exercise group

Other

Eccentric isokinetic exercise in rotator cuff tendinopathy

Eccentric exercise

Device

The isokinetic group performed eccentric exercises on the Humac Norm II device three times weekly for four weeks, in addition to a standardized shoulder exercise program.

Primary outcomes

  1. To evaluate the effects of an eccentric isokinetic exercise program on shoulder compare outcomes

    Time frame: 6 mounth

    To evaluate the effects of an eccentric isokinetic exercise program on shoulder pain, function, and ultrasonographic supraspinatus muscle architecture in patients with rotator cuff tendinopathy, and to compare outcomes with a standardized pain was assessed using VAS. The VAS is an ordinal scale that rates pain from 0 to 10. Low scores indicate low pain, while high scores indicate severe pain.

  2. Western Ontario Rotator Cuff Index

    Time frame: 3 months

    It assesses the impact of shoulder pain on five key domains: physical symptoms, sports and recreation, work function, lifestyle, and emotional well-being. The questionnaire takes less than 10 minutes to complete, features 21 items, and is scored out of 2100 points, with higher scores indicating greater dysfunction.

  3. Ultrasonographic measurement

    Time frame: 3 months

    Supraspinatus muscle thickness was measured in millimeters using ultrasonography. High values indicate good function.

Sponsors and collaborators

Lead sponsor

Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization

Other

Registry information

Official study title

The Effect of Eccentric Isokinetic Exercise on Shoulder Function, Pain, and Muscle Architecture in Shoulder Tendinopathies

Acronym: eccentric

Important dates

Study start
2025
Primary completion
2025
Study completion
2026
First posted
Jul 27, 2026
Registry last updated
Jul 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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