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Contralateral Resistance Training During Immobilization in Patients With Acromioclavicular Joint Injury

NCT07628361 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 16

Last updated 2026-06-08

No results posted yet for this study

Summary

This randomized controlled trial aims to compare the effects of contralateral eccentric and concentric resistance training performed during the immobilization period following acromioclavicular joint injury. Immobilization is commonly prescribed after injury but may lead to reductions in muscle mass, neuromuscular function, force production, and upper-limb functionality.

Contralateral resistance training, also known as cross-education training, involves exercising the non-injured limb to induce beneficial adaptations in the immobilized limb through neural mechanisms. While both eccentric and concentric exercise may produce contralateral effects, their relative effectiveness in a clinical population remains unclear.

Participants with acute acromioclavicular joint injury requiring sling immobilization will be randomly assigned to either a contralateral eccentric training group or a contralateral concentric training group. During immobilization, participants will perform supervised resistance training with the non-injured upper limb. Following immobilization, all participants will receive the same standardized rehabilitation program.

Neuromuscular function, muscle morphology, force production, upper-limb function, and quality of life will be assessed before immobilization, after immobilization, and following rehabilitation. The findings may contribute to the development of more effective rehabilitation strategies for patients recovering from upper-limb injuries requiring temporary immobilization.

Conditions

  • Acromioclavicular Joint Injury
  • Acromioclavicular Joint Dislocation

Interventions

BEHAVIORAL

Contralateral Eccentric Resistance Training

Supervised unilateral eccentric elbow flexor training performed with the non-injured limb during sling immobilization (2-4 weeks). Training is performed 3 times/week, 5 sets of 8-12 repetitions at 60-90% 1RM, with 4-second contractions and 3-minute rest intervals between sets.

BEHAVIORAL

Contralateral Concentric Resistance Training

Supervised unilateral concentric elbow flexor training performed with the non-injured limb during sling immobilization (2-4 weeks). Training is performed 3 times/week, 5 sets of 8-12 repetitions at 60-90% 1RM, with 4-second contractions and 3-minute rest intervals between sets.

Sponsors & Collaborators

  • Universidad Nacional Andres Bello

    lead OTHER

Principal Investigators

  • Claudio Chamorro Lange, PhD · Universidad Nacional Andres Bello

  • Luis Peñailillo Escaráte, PhD · Universidad Nacional Andres Bello

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
36 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-01-01
Primary Completion
2027-07-01
Completion
2027-07-01

Countries

  • Chile

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07628361 on ClinicalTrials.gov