- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00504010
The Role of Arnica on Muscle Pain Following Eccentric Exercise (Arnica)
Study Overview
Status
Intervention / Treatment
Detailed Description
Design: The design is a randomized, placebo-controlled, double-blind trial. Each participant will receive 2 containers of gel. One container will be marked "LEFT" and one "RIGHT." One container will contain a commercially available arnica gel formulation, and the other will contain a placebo gel, identical in appearance to the arnica. Subjects will not know which container contains which product. Each participant will also be given a form containing an analog pain scale for each leg. The participant will rate his or her pain in each leg separately on the day before exercise. Each subject will then be asked to perform calf raises using the following protocol:
- The participant removes shoes.
- Active range of motion of the ankle is measured bilaterally using a goniometer.
- He or she places the metatarsal portion of his or her foot on a step that is 7 inches above the floor. Handrails are provided for safety and comfort
- He or she then performs heel lifts by rising up on the stair using the foot on the stair, holds this for 2 seconds, then maximally dorsiflexes the foot for a count of 2 seconds. A metronome set to generate a tone every 2 seconds guides the pace of this.
- This is repeated 25 times, or until the subject is unable to complete a full cycle.
- He or she then performs the same sequence using the other leg.
- A second set of 20 repetitions is performed in each leg, followed by a final 15 repetitions.
- The gel is applied immediately after exercise to both lower legs. Subjects are instructed not to wash off the leg for at least one hour after application.
- The pain score is completed for each leg 24 hours later, and the gel is applied to each leg. Again, subjects are instructed to leave the gel undisturbed for at least one hour.
- Approximately 48 hours later the subject returns for measurement of ankle range of motion, again completes a pain score and applies the gel for a final time. Subjects are instructed to leave the gel on the legs for at least one hour.
- To measure muscle tenderness, a 1cm sphere is placed on the subject's mid-calf, and compressed by a standardized 5 pound weight. The subject provides a tenderness score for each leg using the same pain score.
- A final pain score is completed by each subject at approximately 72 hours.
Neither subjects nor the researchers doing the data collection or analysis will know which gel is associated with which formulation (placebo vs. Arnica). Controls are within-subjects.
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
-
-
Texas
-
Houston, Texas, United States, 77074
- Memorial Family Medicine
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- age 18 or older
- two fully functional legs
Exclusion Criteria:
- allergy or sensitivity to the ester family
- open wound or inflammatory condition on legs
- chronic or acute leg pain
- neuropathy involving one or both legs
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: 1
arnica containing cream
|
Applied to lower extremity once a day for 3 days
|
Placebo Comparator: 2
carrier cream without arnica
|
placebo cream applied to leg daily for 3 days
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Muscle soreness
Time Frame: 24 - 72 hours
|
24 - 72 hours
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Muscle tenderness
Time Frame: 48 hours
|
48 hours
|
Range of motion of ankle joint
Time Frame: 48 hours
|
48 hours
|
Collaborators and Investigators
Investigators
- Principal Investigator: David W Bauer, MD, Memorial Hermann
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- HSC-MH-07-0202
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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