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CompletedNCT03186287Updated Apr 17, 2020

Effectiveness of Eccentric and Concentric Strength Training in Patients With Subacromial Impingement Syndrome

An interventional study of Eccentric training and Concentric training in Subacromial Impingement Syndrome, sponsored by Dokuz Eylul University. Completed at 1 site in Turkey. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-04-17.

Sponsored by Dokuz Eylul University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
45
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to investigate and compare the effects of eccentric and concentric strength training on pain, strength, joint position sense and function in patients with subacromial impingement syndrome.

02

Conditions studied

  • Subacromial Impingement Syndrome
03

In context

Shoulder Impingement Syndrome

304 studies on the registry are indexed under Shoulder Impingement Syndrome; 55 are open to participants now.

This study's enrollment of 45 is below the median of 54 across 261 interventional studies indexed under Shoulder Impingement Syndrome.

Browse Shoulder Impingement Syndrome studies →

Lead sponsor

Dokuz Eylul University is the lead sponsor of 252 studies on the registry; 32 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Diagnosis of subacromial impingement syndrome
  • Complaints associated with subacromial impingement syndrome for at least 3 months
  • No extra pain with 90 degree abduction-90 degree external rotation position of the shoulder
  • Ability to complete the entire study procedure

Exclusion criteria

Exclusion Criteria:

  • Severe pain; shoulder pain is > 7/10
  • History of upper extremity fracture
  • History of shoulder, cervical and thoracic surgery
  • Having shoulder instability or frozen shoulder diagnosis
  • History of shoulder injuries, trauma and / or shoulder symptoms requiring treatment during the last 1 year (except than subacromial impingement syndrome)
  • Full-thickness rotator cuff tear
  • Systemic musculoskeletal disease
  • Neck and shoulder pain with cervical spine movement
  • Chest deformity or scoliosis diagnosis
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
45 participants (actual)

Study arms

  • Experimental
    Eccentric training group

    The participants in this group will actively perform eccentric phase of resistive shoulder exercises. Additionally they will receive standard physiotherapy.

    Other: Eccentric training · Other: Standard physiotherapy

  • Experimental
    Concentric training group

    The participants in this group will actively perform concentric phase of resistive shoulder exercises. Additionally they will receive standard physiotherapy.

    Other: Concentric training · Other: Standard physiotherapy

  • Active comparator
    Control group

    The participants in this group will receive only standard physiotherapy.

    Other: Standard physiotherapy

Interventions

  • OtherEccentric training

    Eccentric phase of resistive shoulder exercises will be performed three sets of 15 repetitions once a day for 12 weeks using therabands. Participants will be supervised by the physiotherapist 3 days a week for the first 6 weeks, 2 days a week for the next 3 weeks and 1 day a week for the last 3 weeks.

  • OtherConcentric training

    Concentric phase of resistive shoulder exercises will be performed three sets of 15 repetitions once a day for 12 weeks using therabands. Participants will be supervised by the physiotherapist 3 days a week for the first 6 weeks, 2 days a week for the next 3 weeks and 1 day a week for the last 3 weeks.

  • OtherStandard physiotherapy

    The participants will receive standard physiotherapy. The standard physiotherapy exercises will be supervised by the physiotherapist, same as intervention exercises.

06

What researchers measure

Primary outcomes

  1. Shoulder Function

    Change of Constant Murley Score

    Time frame: Baseline, 12 weeks and 24 weeks

Secondary outcomes

  1. Pain intensity

    Change of visual analog scale score in activity and rest

    Time frame: Baseline, 12 weeks and 24 weeks

  2. Upper extremity function

    Change of disabilities of the arm, shoulder, and hand (DASH) score

    Time frame: Baseline, 12 weeks and 24 weeks

  3. Isometric strength

    Change of shoulder abduction and external rotation isometric strength (in kg, with hand held dynamometer)

    Time frame: Baseline, 12 weeks and 24 weeks

  4. Eccentric strength

    Change of shoulder abduction and external rotation eccentric strength (in kg, with hand held dynamometer)

    Time frame: Baseline, 12 weeks and 24 weeks

  5. Joint position sense

    Change of shoulder joint repositioning angle errors (with bubble inclinometer)

    Time frame: Baseline, 12 weeks and 24 weeks

07

Study locations

1 site
  • Dokuz Eylul University, School of Physical Therapy and Rehabilitation
    İzmir, Balçova 35340, Turkey
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 17, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03186287
Lead sponsor
Dokuz Eylul University
Responsible party
Damla Karabay (MSc, Izmir Katip Celebi University) — Principal investigator
First posted
Jun 14, 2017
Start date
Sep 21, 2017
Primary completion
Mar 16, 2020
Completion
Mar 16, 2020
Last update
Apr 17, 2020

Study contacts

Damla KARABAY, MSc
principal investigator · Izmir Katip Celebi University
Sevgi Sevi YESILYAPRAK, PhD
study director · Dokuz Eylul University
Mehmet ERDURAN, MD
study director · Dokuz Eylul University
Cem OZCAN, MD
study director · Izmır Katip Celebi University Atatürk Training and Research Hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2020. You cannot join it, but the record below documents what was studied.

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