Contralateral (opposite-arm) training during sling immobilization after shoulder injury
Official title: Effects of Contralateral Eccentric and Concentric Resistance Training During Immobilization on Neuromuscular Function, Functional Recovery, and Quality of Life in Patients With Acromioclavicular Joint Injury: A Randomized Controlled Trial
Run by Universidad Nacional Andres Bello · NCT07628361 · Data updated 2026-11-12
A random assignment compares contralateral eccentric vs. contralateral concentric resistance training in the non-injured arm while the injured arm is immobilized for a shoulder AC joint injury.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 36 Years |
| Sex | All |
| Enrollment | 16 (estimated) |
| Sponsor | Universidad Nacional Andres Bello Academic / other |
| Locations | 1 site (Santiago, Providencia) |
| Status | Recruiting |
| Started | January 1, 2026 |
| Main results expected | July 1, 2027 |
| Study ends | July 1, 2027 |
| Registry record updated | June 8, 2026 |
| Trial ID | NCT07628361 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18-36 with acute AC joint injury requiring sling immobilization for about 2–4 weeks.
✕Probably not a fit
Patients who do not respond to cross-education or have contraindications to resistance training may not experience benefits.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
In this randomized trial, patients with acute acromioclavicular joint injury requiring sling immobilization are assigned to either eccentric or concentric resistance training of the non-injured arm during the immobilization period. The study aims to see if training the healthy arm can help preserve strength and neuromuscular function in the injured arm through cross-education. Interventions are supervised and occur during the immobilization window, with assessments conducted before and after immobilization to evaluate upper-limb performance. The trial addresses gaps in understanding which contraction mode provides greater cross-education benefits for patients recovering from AC joint injuries.
Why it matters
Potential benefit: If successful, the approach could reduce strength loss and improve early shoulder function during immobilization.
How similar studies have gone: Previous evidence supports cross-education effects in healthy and clinical populations, but the optimal contraction mode in this specific injury context is not yet established.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Men and women aged 18 to 36 years. * Diagnosis of acute acromioclavicular joint injury confirmed by an orthopedic surgeon. * Physician-prescribed upper-limb immobilization using a sling for approximately 2 to 4 weeks, with or without surgical repair. * Ability to understand study procedures and provide written informed consent. * Medical clearance to participate in the rehabilitation and resistance training program. Exclusion Criteria: * Previous surgery or severe musculoskeletal injury affecting either upper limb within the previous 12 months. * Neurological disorders affecting motor function or neuromuscular performance. * Contraindications to transcranial magnetic stimulation according to established safety guidelines. * Current participation in another clinical trial or structured upper-limb rehabilitation program. * Cognitive impairment or inability to comply with study procedures. * Pregnancy. * Any medical condition that, in the opinion of the investigators, may compromise participant safety or study participation.
Where it's running
-
Clínica Indisa
Santiago, Providencia, Chile Recruiting
Study contacts
- Study coordinator: Omar E Valdés Tapia, PT, MSc, PhD(c)
- Email: o.valdestapia@uandresbello.edu
- Phone: +569 74082822
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.