Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Strength training with blood-flow restriction after ACL reconstruction

Official title: Clinical-randomized Trial of the Effect of Rehabilitation Therapy Using Strength and Blood Flow Restriction Training on Muscular Fitness and Regeneration After Anterior Cruciate Ligament Reconstruction

Run by University Hospital, Bonn · NCT07043569 · Data updated 2026-11-12

This trial will test whether adding blood flow restriction to light strength training helps people recovering from ACL reconstruction regain muscle, strength, and knee function during outpatient rehabilitation.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment30 (estimated)
SponsorUniversity Hospital, Bonn
Academic / other
Locations1 site (Bonn, North Rhine-Westphalia)
StatusRecruiting
StartedJune 20, 2025
Main results expectedJuly 31, 2026
Study endsDecember 31, 2026
Registry record updatedDecember 8, 2025
Trial IDNCT07043569 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are people who have had ACL reconstruction and are able to participate in outpatient rehabilitation without vascular implants or active lower-limb inflammation and who do not have sickle cell disease.

Probably not a fit

Patients with sickle cell anemia, prior iatrogenic vascular changes in the lower limbs (such as stents or bypasses), active inflammation of the lower extremities, or those unable to attend outpatient sessions are unlikely to benefit or be eligible.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a randomized clinical trial comparing outpatient resistance training with real blood flow restriction (BFR) to resistance training with sham-BFR after anterior cruciate ligament reconstruction. Participants follow a sports-science controlled, low-load strength program with either external venous occlusion or a sham procedure, and outcomes include muscle mass regeneration, strength, and knee functional measures. The intervention builds on prior positive results of BFR used as prehabilitation in knee arthroplasty and applies the approach to post-ACL reconstruction rehabilitation. The trial is run at the Bonn Center for Outpatient Rehabilitation within the University Hospital Bonn and enrolls patients able to attend outpatient sessions.

Why it matters

Potential benefit: If successful, this approach could help patients regain muscle and strength faster using lower-load exercises, potentially improving recovery and knee function during rehab.

How similar studies have gone: Previous work from the same group showed positive effects of BFR as prehabilitation before knee arthroplasty and BFR has produced low-load strength gains similar to high-load training in other settings, though its use specifically after ACL reconstruction is less well established.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ACL reconstruction
* Ability to take part in an outpatient rehabilitation

Exclusion Criteria:

* Sickle Cell anemia
* iatrogenic changes in the vessels of the lower limbs (stents, bypasses)
* inflammation of the lower extremities

Where it's running

  • University Hospital Bonn
    Bonn, North Rhine-Westphalia, Germany
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.