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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Biofreeze | Experimental | 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. |
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| Placebo | Sham Comparator | 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. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Biofreeze | Drug | 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. |
| Measure | Description | Time Frame |
|---|---|---|
| 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. | 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 |
| 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. | 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 |
| 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. | 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 |
| 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. | Step length will be measured for both topical applications at initial walk (T1) and post-topical walk (T2), in one session, lasting 30 minutes |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sport and Spine Rehab | Rockville | Maryland | 20878 | United States |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Feb 12, 2020 | Mar 3, 2020 | 1 | ||
| May 5, 2020 |
Participants will be randomly assigned 1 of 2 topicals, Gel A or Gel B. Upon completion of study procedures they will return for a second testing session and receive the other topical
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The participant, investigator, and statistician will be blind to the intervention received
| Placebo | Drug | 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. |
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| May 27, 2020 |
| 2 |
| Jul 31, 2024 | Aug 26, 2024 | 3 |