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Cuffed legs, lighter pedaling: can restricted blood flow make exercise easier for aging bodies?

NCT ID NCT07825987

Symptom relief Sponsor: University Hospital, Bonn Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Researchers at University Hospital Bonn are testing whether low-load cycling with blood flow restriction can help adults over 70 move better and feel better day to day. Participants pedal twice a week for six weeks while wearing thigh cuffs that are individually calibrated to partially restrict blood flow. A comparison group cycles with cuffs set to a low, non-restrictive pressure. The team measures changes in mobility and quality of life, along with walking speed, strength, and body composition.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
individualized blood flow restriction during low-load cycling, using thigh cuffs calibrated to each person's limb occlusion pressure
What this could lead to
If it works, this could offer older adults a gentler way to build strength and stay mobile, using light cycling rather than heavy weights.
What could go wrong
The trial is small, with about 20 participants, and runs for six weeks, so any benefits may be short-lived or hard to confirm. Cuff pressure can cause discomfort or bruising, and people with certain heart or blood vessel conditions cannot take part.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

20 people

The number who actually took part.

Started

Jan 2023

Finished

Mar 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

70 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age \> 70 years * Community-dwelling * Written informed consent * Medical clearance for participation in exercise training with blood flow restriction (BFR) Exclusion Criteria: * Acute or chronic malignancy * Immunosuppression * Acute or chronic systemic infection * Sickle cell anemia * Previous vascular surgery of the lower extremities (e.g., bypass grafting or stent implantation)

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy ageing

Contacts and locations

Locations

  • Cellitinnen-Krankenhaus St. Marien

    Cologne, North Rhine-Westphalia, 50668, Germany

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