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Fitness-Tracker-Style wristband could help patients build muscle before joint surgery

NCT ID NCT05986617

Disease control Sponsor: University of Iowa Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 Jun 30, 2026 · Last updated Jul 01, 2026 · Updated 1 time

Summary

This study tests whether a wearable bioimpedance wristband (like a fitness tracker) helps people with severe obesity and knee osteoarthritis improve their body composition—gaining muscle and losing fat—before joint replacement surgery. All participants receive coaching on body composition, but half also use the wristband to track their progress. The goal is to see if the wristband leads to better changes in muscle and fat compared to coaching alone.

What this could mean

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

Active substance
InBody Band 2 (wearable bioimpedance wristband)
What this could lead to
If it works, this could point toward a practical tool to help people with severe obesity gain muscle and lose fat before joint replacement surgery, potentially improving surgical outcomes.
What could go wrong
This is a small, early-stage study with only 60 participants, so results may not apply broadly. The wristband may not provide enough benefit over standard coaching alone.

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

60 people

The number who actually took part.

Started

Jul 2023

Finished

Oct 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

18 to 99 years

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: * Adults \>/= 18 years * BMI \> 40kg/m2 * Presenting to bariatric arthroplasty clinic with desire for total joint arthroplasty procedure * Owns a smartphone capable of handling iOS or Google Play apps * Has a wrist circumference less than or equal to 7.7" Exclusion Criteria: * Has a pacemaker or other electronic pacemaker placement * Inability to complete study protocols * Inability to stand unsupported for 60-90 seconds * Does not own a smart phone capable of handling iOS or Google Play apps * Has a wrist circumference greater than 7.7"

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Conditions

The condition(s) this trial relates to.

morbid obesity Obesity obesity disorder osteoarthritis, knee

As listed by the trial registrant

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

Knee osteoarthritis Obesity

Contacts and locations

Locations

  • University of Iowa Hospitals & Clinics

    Iowa City, Iowa, 52242, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.