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Effects of two types of exercise on shoulder pain, function and muscular control in individuals with shoulder tendinitis

Isometric versus isotonic exercise in individuals with rotator cuff tendinopathy - effects on shoulder pain, function, and neuromuscular control: a randomized clinical trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-3pvdvfk
Enrollment
Unknown
Registered
2023-05-10
Start date
2022-07-01
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tendinopathy

Interventions

Characteristics of the study: This study is characterized as a randomized clinical trial, which will consist of two groups, and developed at the Department of Physiotherapy at the Federal University o
and 2) isotonic group, which will perform isotonic resistance training protocol for the RC musculature associated with a stretching and strengthening protocol focused on the periscapular musculature.
G11.427.410.698.277

Sponsors

Universidade Federal do Rio Grande do Norte
Lead Sponsor
Universidade Federal do Rio Grande do Norte
Collaborator

Eligibility

Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: individuals aged between 18 and 60 years, with shoulder pain for at least three months; at least one positive specific test in physical exam (Jobe test or resisted external rotation); and diagnosed with tendinopathy by an orthopedist through confirmed morphological alterations in the rotator cuff tendons (supraspinatus and/or infraspinatus) observed using nuclear magnetic resonance or ultrasonography

Exclusion criteria

Exclusion criteria: individuals that perform high-intensity sports with high shoulder demand; impaired long head of biceps; adhesive capsulitis; history of glenohumeral luxation or subluxation; history of clavicle, scapula, or humerus fracture; history of rotator cuff surgical intervention; signs of partial or complete rupture of rotator cuff; acromioclavicular joint osteoarthritis; neurologic or rheumatologic dysfunctions; corticoid application at least three months before the baseline evaluation; body mass index>28 kg/m2 since it may compromise quality of electromyography data; and individuals under treatment with fluoroquinolone antibiotics or diabetes because both may affect tendon metabolism.

Design outcomes

Primary

MeasureTime frame
It is expected to find a decrease in pain at rest and during arm elevation with and without load, verified through the numerical pain rating scale, from the observation of 2 points less pain at the end of the treatment, being more evident in the isometric group.

Secondary

MeasureTime frame
It is expected to find improvement in function, verified through the translated version of the Penn Shoulder Score Questionnaire (Penn) and the Western Ontario Rotator Cuff Index (WORC) from the observation of an improvement of 11.4 points on the Penn and a decrease of 245.26 mm in the WORC at the end of the treatment, being more evident in the isometric group.;It is expected to find an increase of 10% in isometric strength for arm elevation and 5% for lateral and medial rotation of the shoulder, verified through the dynamometer (Lafayette Instrument® - model 01165) at the end of treatment, being more evident in the isometric group.;It is expected to find increased electromyographic activity of 0.048, 0.010, 0.096 e 0.070 milliVolts, respectively, for the lower trapezius, infraespinatus, middle deltoid and serratus anterior during arm elevation and isometric lateral and medial shoulder rotations and for the load and unloaded arm elevation motor task, verified through an 8-channel signal conditioning module (MSC 1000) (EMG system do Brasil®) with an analog-digital converter – A/D (CAD, 12/36-60 K) with 12-bit resolution, at the end of the treatment, being more evident in the isometric group.

Countries

Brazil

Contacts

Public ContactCatarina de Oliveira Sousa

Universidade Federal do Rio Grande do Norte

catarina.sousa@ufrn.br+558433422385

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Feb 8, 2026