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Active, not recruitingNCT03888820Updated Mar 25, 2019

Biofreeze® vs. a Placebo on Chronic Low Back Pain Walking Gait Characteristics and Pain

A Phase 4 interventional study of Biofreeze and Placebo in Chronic Low Back Pain, sponsored by Sport and Spine Rehab Clinical Research Foundation. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-03-25.

Sponsored by Sport and Spine Rehab Clinical Research Foundation · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Mar 2019, 7 years 6 months ago, but the record still lists the study as active, not recruiting.
  • Registered 4 months after the study started (first participant enrolled Mar 2018, registered Jul 2018).
Phase
Phase 4
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine the effect of Biofreeze® versus a placebo on walking gait characteristics and pain during walking in individuals with cLBP.

Read the detailed description

A convenience sample of 20 participants, 18 years or older with cLBP will be recruited for this study. Participants must have cLBP and be able to perform all study procedures. All interested participants will report in comfortable clothing and sneakers. After explanation of the study and consent, participants will complete the demographics questionnaire, NIH cLBP Minimal Dataset, 10-point Numeric Pain Rating Scale (NPRS), and the Roland-Morris Low Back Pain and Disability Questionnaire (RMDQ). Participants will then complete a 3-minute walking baseline assessment. Following the assessment, participants will rate their pain and be randomly assigned receive a blinded topical of either Biofreeze® or a Placebo. Both the participant and the investigator will be blind to assigned products. The dose of both gels will be 5 mL per side of the low back. The participant will wait 15 minutes, rate their pain, and repeat the 3-minute walking assessment and rate their pain again. Next, there will be a minimum of a 24-72-hour washout period at which time the participants will return and repeat the same protocol using the other topical.

02

Conditions studied

  • Chronic Low Back Pain
03

In context

Back Pain

2,373 studies on the registry are indexed under Back Pain; 284 are open to participants now.

This study's enrollment of 20 is below the median of 60 across 1,941 interventional studies indexed under Back Pain.

Browse Back Pain studies →

Lead sponsor

Sport and Spine Rehab Clinical Research Foundation is the lead sponsor of 15 studies on the registry; none are open to participants now.

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

  • must have cLBP and be able to perform all study procedures. CLBP will be defined as pain, muscle tension, or stiffness localized between the lower posterior margin of the rib cage and the horizontal gluteal fold lasting at least 12 weeks and has resulted in pain on at least half the days in the past 6 months

Exclusion criteria

Exclusion Criteria:

  • pregnancy, cancer, spinal or hip surgery, or a corticosteroid injection within the past 4 weeks
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    Biofreeze

    The Biofreeze® gel will contain 3.5% menthol while the placebo will be the same formula with menthol removed and a menthol fragrance added so it is non-distinguishable from the real Biofreeze® gel. The dose of both gels will be 5 mL applied to low back, which is consistent with previous studies who reported a treatment effect for topical gels containing menthol (1 mL of gel for every 200 cm2 of surface area). The treatment will be applied by the investigator using a gloved hand and syringe containing 5mL of gel. The gel will be applied to the low back from the lower ribs to the SI joint and iliac crests. The participant will wait 15 minutes, rate the pain in their low back.

    Drug: Biofreeze

  • Sham comparator
    Placebo

    The Biofreeze® gel will contain 3.5% menthol while the placebo will be the same formula with menthol removed and a menthol fragrance added so it is non-distinguishable from the real Biofreeze® gel. The dose of both gels will be 5 mL applied to low back, which is consistent with previous studies who reported a treatment effect for topical gels containing menthol (1 mL of gel for every 200 cm2 of surface area). The treatment will be applied by the investigator using a gloved hand and syringe containing 5mL of gel. The gel will be applied to the low back from the lower ribs to the SI joint and iliac crests. The participant will wait 15 minutes, rate the pain in their low back.

    Drug: Placebo

Interventions

  • DrugBiofreeze

    Biofreeze is a topical analgesic that uses the cooling effect of menthol, a natural pain reliever, to soothe minor muscle and joint pain. The product will be applied immediately after walking. The participant will wait 15 minutes prior to walking again.

  • DrugPlacebo

    The placebo is the Biofreeze product with all active ingredients removed. The product will be applied immediately after walking. The participant will wait 15 minutes prior to walking again.

06

What researchers measure

Primary outcomes

  1. Change in Numeric Pain Rating Scale

    Pain will be measures on a scale of 0 to 10, 0 being no pain at all and 10 representing the worst imaginable pain.

    Time frame: Pain will be measured at baseline, immediately following the 3 minute walk, 15 minutes after topical application, and after the second 3 minute walk for both topical applications

  2. Change in Knee Flexion

    Knee Flexion Range of Motion will be measured using the Woodway Walker View Treadmill which utilizes a 3D camera and will be measured during the last 30 seconds of the 3 minute walk.

    Time frame: Knee Flexion Range of Motion will be measured for both topical applications at initial walk (T1) and post-topical walk (T2) in one session, lasting 30 minutes

  3. Change in Hip Flexion

    Hip Flexion Range of Motion will be measured using the Woodway Walker View Treadmill which utilizes a 3D camera and will be measured during the last 30 seconds of the 3 minute walk.

    Time frame: Hip Flexion Range of Motion will be measured for both topical applications at initial walk (T1) and post-topical walk(T2), in one session, lasting 30 minutes

  4. Change in Step Length

    Step Length will be measured using the Woodway Walker View Treadmill which utilizes load cells within the treadmill belt and will be measured during the last 30 seconds of the 3 minute walk.

    Time frame: Step length will be measured for both topical applications at initial walk (T1) and post-topical walk (T2), in one session, lasting 30 minutes

07

Study locations

1 site
  • Sport and Spine Rehab
    Rockville, Maryland 20878, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 25, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03888820
Lead sponsor
Sport and Spine Rehab Clinical Research Foundation
Responsible party
Sponsor
First posted
Mar 25, 2019
Start date
Mar 1, 2018
Primary completion
Mar 30, 2019 (estimated)
Completion
Apr 30, 2019 (estimated)
Last update
Mar 25, 2019

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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