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CompletedNCT00007241Updated Jan 4, 2007

Muscle Strengthening Device for Knee Osteoarthritis

A Phase 2 interventional study of Isometric exercise in Osteoarthritis, sponsored by National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). Completed at 6 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2007-01-04.

Sponsored by National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
92
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Studies have shown that isometric strengthening helps people with osteoarthritis of the knee. Isometric strengthening is muscle-strengthening exercise without movement, in which a person applies a force against a resistant object--for example, pushing against a brick wall. This study will test the effectiveness of a portable isometric exercise device for home use that guides a person through an exercise program using various forms of feedback. We will look at whether people exercising with the device achieve better outcomes (results) in pain, stiffness, strength, and functional measures compared to people who do not use the device or people exercising according to printed material from arthritis organizations.

Read the detailed description

Previous studies have shown that isometric strengthening is beneficial in managing osteoarthritis of the knee. This type of exercise can decrease joint-related pain and stiffness while increasing strength and functional measures. However, individuals rarely adhere to isometric exercise for any lengthy period of time because there has not been a way to measure applied force and performance over time in the home setting. In addition, this type of exercise has often been described as "boring." We believe that being able to monitor one's progress is essential in maintaining adherence to an isometric exercise program. This study will examine the effectiveness of a portable isometric exercise device for home use that guides the user through an exercise protocol by means of various forms of feedback.

We hypothesize that individuals exercising with the device will achieve better outcomes in pain, stiffness, strength, and functional measures than a control group or a group exercising according to printed material from arthritis advocacy groups. We will randomly assign study participants meeting eligibility criteria to the exercise device group, exercise according to printed material group, or control group. We will conduct measures in all groups during a clinic visit at baseline, 2, 4, 6, and 8 weeks. As subjects in the exercise device group strengthen their leg muscles, a physical therapist will likely need to adjust upward the target force for different leg positions during every clinic visit, 2 weeks apart.

02

Conditions studied

  • Osteoarthritis

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Keywords

  • Osteoarthritis
  • Knee
  • OA
  • Isometric
  • Exercise
  • Strengthening
  • Joint-related pain
03

In context

Osteoarthritis

4,399 studies on the registry are indexed under Osteoarthritis; 583 are open to participants now.

This study's enrollment of 92 is above the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) is the lead sponsor of 100 studies on the registry; 12 are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 5 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Able to give conformed consent.
  • Age > 18.
  • Pain symptoms provoked by activity in the more symptomatic knee of between (and inclusive of) 3/10 and 8/10 on a verbal analog scale.

Exclusion criteria

Exclusion Criteria:

  • Participation in a strengthening program of the knees in the past month.
  • Uncontrolled or functionally limiting cardiac disease.
  • Uncontrolled hypertension.
  • Severe peripheral neuropathy (i.e., insensate to the Simmes 5.07 monofilament).
  • Knee flexion contracture greater than 10 degrees.
  • Intra-articular steroids in the past 3 months, or hyaluronic acid in the last 9 months.
  • Poor health that would impair compliance or assessment.
  • Arthroscopy of either knee in the past six months.
  • Lateral instability of > 15 degrees, or posterio-anterior instability of greater than 1 cm.
  • Knee pain due to pes anserine bursitis.
  • Active fibromyalgia.
  • Active alcohol or substance abuse.
  • Arthritis other than osteoarthritis in the more symptomatic knee.
  • Pregnancy.
  • History of cancer (other than skin cancer) not in remission.
  • Symptomatic spine, hip, ankle, or foot disease other than osteoarthritis that would interfere with assessment of the knee.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single
Enrollment
92 participants

Interventions

  • DeviceIsometric exercise
06

Study locations

6 sites
  • Clinical Research Consultants, Inc.
    Trumbull, Connecticut 06611, United States
  • Radiant Research, Inc.
    Moorestown, New Jersey 08057, United States
  • Rochester Clinical Research, Inc.
    Rochester, New York 14609, United States
  • Preventive Medical Technologies, Inc.
    Philadelphia, Pennsylvania 19104, United States
  • Radiant Research, Inc.
    Wyomissing, Pennsylvania 19610, United States
  • Omega Medical Research
    Warwick, Rhode Island 02886, United States
07

References and documents

Publications

  • Goldman RJ, Reinbold KA, Iglarsh ZA, Neustadter LM, Oatis CA, Schumacher HR. Phase I design and evaluation of an isometric muscle reeducation device for knee osteoarthritis rehabilitation. J Rehabil Res Dev. 2003 Mar-Apr;40(2):95-107. doi: 10.1682/jrrd.2003.03.0095. PubMed 15077636 ↗
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 4, 2007, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00007241
Lead sponsor
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
First posted
Dec 18, 2000
Start date
Sep 2001
Completion
Jul 2002
Last update
Jan 4, 2007

Study contacts

Kirk A. Reinbold, PhD
principal investigator · Preventive Medical Technologies, Inc.
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2003. You cannot join it, but the record below documents what was studied.

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