Muscle Fatigability and Trip-specific Fall Risk in Adults With Knee Osteoarthritis

NCT ID: NCT06229691

Last Updated: 2025-09-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-05-14

Study Completion Date

2025-08-27

Brief Summary

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The goal of this clinical trial is to learn about how fatigue affects the risk of falling in adults aged 55-70 years with and without knee osteoarthritis. The main questions this trial aims to answer are:

* Does fatigue increase the risk of tripping while walking? and
* Does fatigue increase the risk of falling in response to a trip while walking? Participants will
* Complete questionnaires
* Wear a device that measures physical activity for 5-7 days
* Complete a 30 minute walk on a treadmill
* Complete the following before and after the treadmill walk:

* Computer test to measure mental fatigue
* Maximal strength testing
* Balance test

Researchers will compare adults with and without knee osteoarthritis to see if fall risk in adults with knee osteoarthritis is affected more by walking activity compared to adults without knee osteoarthritis.

Detailed Description

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Conditions

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Osteoarthritis, Knee

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Healthy

Group Type EXPERIMENTAL

30 minute treadmill walk

Intervention Type BEHAVIORAL

Participants will walk on a treadmill at their preferred speed for 30 minutes. One minute "challenge" periods will occur at minutes 7, 17, and 27, when the treadmill speed will increase by 50%. This walk will induce a magnitude of muscle fatigue corresponding to an individual participant's fatigability.

Knee osteoarthritis

Group Type EXPERIMENTAL

30 minute treadmill walk

Intervention Type BEHAVIORAL

Participants will walk on a treadmill at their preferred speed for 30 minutes. One minute "challenge" periods will occur at minutes 7, 17, and 27, when the treadmill speed will increase by 50%. This walk will induce a magnitude of muscle fatigue corresponding to an individual participant's fatigability.

Interventions

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30 minute treadmill walk

Participants will walk on a treadmill at their preferred speed for 30 minutes. One minute "challenge" periods will occur at minutes 7, 17, and 27, when the treadmill speed will increase by 50%. This walk will induce a magnitude of muscle fatigue corresponding to an individual participant's fatigability.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

For adults with knee osteoarthritis:

* presence of occasional to frequent knee pain
* knee pain that is primarily in the medial knee joint compartment
* minimal morning joint stiffness

For all participants:

* able to walk continuously for 30 minutes without an assistive device

Exclusion Criteria

* fracture or surgery within 1 year
* history of joint replacement
* lower-extremity joint injections within 3 months
* history of stroke or other neurological condition
* cardiovascular or pulmonary conditions that limit daily activity or that preclude participation in exercise
* history of major lower extremity or back injury or pain (except for knee osteoarthritis)
* history of lower extremity amputation
* use an orthotic or prosthetic to walk
* use of beta blockers or other medications that affect fatigue
* use of medications that affect balance
* diabetic neuropathy
* acute illness or the presence of lesions on the torso or lower extremities
* BMI greater than 35
* body weight over 265 lbs
Minimum Eligible Age

55 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute of General Medical Sciences (NIGMS)

NIH

Sponsor Role collaborator

University of Delaware

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Delaware

Newark, Delaware, United States

Site Status

Countries

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United States

Other Identifiers

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U54GM104941

Identifier Type: NIH

Identifier Source: secondary_id

View Link

1924071

Identifier Type: -

Identifier Source: org_study_id

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