We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov Menu

Study on Magnetic Field Therapy to Improve Chronic Lumbar Pain (LBP)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00444990
Recruitment Status : Unknown
Verified September 2007 by Weintraub, Michael I., MD, FACP, FAAN.
Recruitment status was:  Recruiting
First Posted : March 8, 2007
Last Update Posted : September 21, 2007
Information provided by:
Weintraub, Michael I., MD, FACP, FAAN

March 6, 2007
March 8, 2007
September 21, 2007
February 2007
Not Provided
VAS Pain scores/ SF 15 Pain descriptors/ PGIF/
Same as current
Complete list of historical versions of study NCT00444990 on ClinicalTrials.gov Archive Site
Autonomic nervous system functions and range of motion
Same as current
Not Provided
Not Provided
Study on Magnetic Field Therapy to Improve Chronic Lumbar Pain
A Double-Blind, Randomized, Placebo-Controlled Study on Magnetic Field Therapy to Improve Chronic Lumbar Pain (Lbp)


The objective of this study is to determine if treatment with a flex pad impregnated with static/permanent magnets that can penetrate over 70 mm may improve the quality of chronic lumbar pain with reduction of pain scores.


The researchers hypothesis that the application of a flex pad active magnetic therapy vs. sham if utilized daily during waking hours can reduce back pain and/or radicular pain. The null hypothesis is that treatment of subjects with chronic back pain with exposure to static/permanent magnetic fields have no measurable effect on chronic back pain scores and will be equal to the underlying placebo.


This is a double-blind, randomized, placebo-controlled study which will consist of two treatment groups. Treated subjects will receive a static/permanent magnetic flex pad with a nominal strength of less than 1000 Gauss. Control subjects will receive physically identical flex pad without magnet with a nominal surface field strength of 0 Gauss (placebo). The magnets will be contained in a pad with a Velcro cover and subjects will wear the pad attached to their undergarments/skin during waking hours. Dr. Weintraub will examine participants initially to look for presence or absence of radiculitis, range of motion, presence of absence of spasm, etc. The primary outcome measures will be reduction of chronic low back pain in comparison with prior baseline scores. It is recognized that these changes are subjective in nature. Patients will maintain their VAS scores on a monthly basis and at the end of the study, individuals will return all forms and be reevaluated by Dr. Weintraub. They will be asked specific questions regarding PGIC for bias, etc.

Phase 4
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Low Back Pain
Device: Magnetic Flex Pad
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Unknown status
December 2007
Not Provided

Inclusion Criteria:

  • Female or male subjects age 18-80.
  • Capable of understanding and complying with study protocols.
  • Chronic lumbar pain for at least six months

Exclusion Criteria:

  • Unable to understand informed consent (mental retardation, psychosis, communicative impairment).
  • Cardiac pacemaker or other mechanical internal devices.
  • Tumor in the spine/history of malignancy or tumor.
  • Pregnancy.
  • Prior spine surgery.
Sexes Eligible for Study: All
18 Years to 85 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
United States
Not Provided
Not Provided
Not Provided
Not Provided
Weintraub, Michael I., MD, FACP, FAAN
Not Provided
Principal Investigator: Michael I. Weintraub, MD Phelps Memorial Hospital
Weintraub, Michael I., MD, FACP, FAAN
September 2007

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP