NCT06347692

Brief Summary

To date, the anti-gravity treadmill, as a representative method of lower body positive pressure treadmills, has been rarely reported for knee osteoarthritis rehabilitation. Purpose: This study aims to evaluate the effect of antigravity treadmill training on pain, gait characteristics, and function in patients with knee osteoarthritis.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
40

participants targeted

Target at P25-P50 for not_applicable knee-osteoarthritis

Timeline
Completed

Started Apr 2024

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 27, 2024

Completed
1 month until next milestone

First Posted

Study publicly available on registry

April 4, 2024

Completed
3 days until next milestone

Study Start

First participant enrolled

April 7, 2024

Completed
13 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 20, 2024

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

April 20, 2025

Completed
Last Updated

April 4, 2024

Status Verified

April 1, 2024

Enrollment Period

13 days

First QC Date

February 27, 2024

Last Update Submit

April 2, 2024

Conditions

Keywords

antigravity treadmillosteoarthritisgait characteristicspatient function

Outcome Measures

Primary Outcomes (5)

  • Assessment of patient pain

    The visual analogue scale is a reliable, valid, responsive, and frequently used pain outcome measure. It consists of a bidirectional 10 cm straight line with two labels, that is, "no pain" and "worst possible pain", located at either end of the line. Patients are instructed to draw a vertical mark on the line indicating their pain level.

    Pre and post 3 months intervention period

  • Evaluation of gait parameters (step length)

    Gait parameters were measured using walkway System. The researcher assessed step length in centimeters

    Pre and post 3 months intervention period

  • Evaluation of gait parameters (step time)

    Gait parameters were measured using walkway System. The researcher assessed step time in seconds

    Pre and post 3 months intervention period

  • Evaluation of gait parameters (velocity)

    Gait parameters were measured using walkway System. The researcher assessed velocity which is measured in centimeter/second

    Pre and post 3 months intervention period

  • Evaluation of patient function

    The Western Ontario and McMaster Universities Arthritis Index was used for assessing activities of daily living, functional mobility, gait, general health, and quality of life in patients with knee osteoarthritis. It has a total of 24 items and three subscales, namely pain (5 items), stiffness (2 items), and function (17 items), scored on a five-point ordinal scale, 0 - none, 1 - mild, 2 - moderate, 3 - severe, and 4 - extremely severe. Higher scores indicate worse pain, stiffness, and functional limitations.

    Pre and post 3 months intervention period

Study Arms (2)

control group

EXPERIMENTAL

The control group received a conventional physical therapy program.

Other: physical therapy exercise program

study group

EXPERIMENTAL

Conversely, in addition to the conventional physical therapy program provided to the control group, the antigravity treadmill group underwent antigravity treadmill training using the Alter G device.

Other: antigravity treadmill

Interventions

An Alter G treadmill (Alter G Pro 200, Alter G Inc, USA) was used to provide training to the patients in the antigravity treadmill group. The Alter G allows the patient to change their body weight from 20% to 100% in 1% increments. The air pressure inside the lower body positive pressure chamber can be adjusted from 0 to 2.0 kilopascal above atmospheric pressure. They are very comfortable to train in for long periods of time and have simple controls for adjusting body weight, speed, and inclination.

study group

Both groups received the same traditional physical therapy program for 12 weeks, three times a week, for 30 min each. The conventional physical therapy treatment consisted of acupuncture transcutaneous electrical nerve stimulation, Hot moist pack, Ultrasound and quadriceps setting

control group

Eligibility Criteria

Age50 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients should: (1) be ≥50 years old
  • Patients have been diagnosed with mild to moderate osteoarthritis by a physician and confirmed by radiograph imaging (Kellgren \& Lawrence grade 1-3)
  • Patients' body mass index greater than 30.

You may not qualify if:

  • Patients were excluded if they have a history of ankle, knee, or hip injury or medical operation
  • Have used knee injection for their knee osteoarthritis pain within the past year
  • Have a history of other medical conditions that would interfere with walking
  • Received physical therapy during the past 3 months for knee osteoarthritis
  • Had any metabolic, pulmonary, neuromuscular, neurological, and/or autoimmune disease.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Osteoarthritis, KneeOsteoarthritis

Condition Hierarchy (Ancestors)

ArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Masking Details
Patients were randomly assigned to either the antigravity treadmill group (n = 20) or the control group (n = 20 ) using an online randomization website (www.randomization.com). The control group received a conventional physical therapy program. The therapists responsible for measuring and assessing the outcomes remained blinded to the group assignments.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The study included 40 patients with knee osteoarthritis who were randomly assigned to one of two groups: the antigravity treadmill group (n=20) or the control group (n=20). For 12 weeks, the antigravity treadmill group received training on the Alter G treadmill (75% weight-bearing, 30 minutes per session, three times per week) combined with traditional physical therapy. During the same period, the control group received only traditional physical therapy. The Visual Analogue Scale, Walkway System, and the Western Ontario and McMaster Universities Arthritis Index were used to assess pain, spatiotemporal gait parameters, and patient function, respectively. All outcome measures were obtained pretreatment, post-treatment
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 27, 2024

First Posted

April 4, 2024

Study Start

April 7, 2024

Primary Completion

April 20, 2024

Study Completion

April 20, 2025

Last Updated

April 4, 2024

Record last verified: 2024-04

Data Sharing

IPD Sharing
Will not share