University of Vermont
Burlington, Vermont, 05405, United States
NCT Number: NCT02157675
This study is a randomized, double-blind, placebo-controlled, crossover design study in healthy subjects to determine the effects of a polyherbal supplement on the signs and symptoms of delayed onset muscle soreness (DOMS) induced by eccentric exercise of the arm.
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Notify Me18 year and older
All sexes
Interventional
Phase 4
Burlington, Vermont, 05405, United States
Approximately 30 subjects will be enrolled. The study includes a 19-day treatment period and a minimum 7-day washout period in which no test product is administered. Subjects will then crossover to a second 19-day treatment period to complete the study. Subjects receive test product (polyherbal capsule or placebo capsule) daily during the treatment periods. Two exercise test sessions followed up to 5 days will occur during the study using a modified seated arm-curl bench. Muscle strength is assessed on each day of the 5-day exercise test period. Safety is assessed during the study by collecting adverse events (AEs), clinical laboratory data (serum hematology and chemistry), and vital signs (blood pressure, pulse, respiration rate, temperature).
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
Time frame: Day 2 of each 5-day test period (ie, 48 hours after the eccentric exercise procedure to induce DOMS on Day 0)
This procedure utilizes 3 sets of 1 repetition of maximal isometric contractions of the arm recorded in pounds and averaged across the 3 sets.
Time frame: Up to 5 days following eccentric exercise.
Time frame: Days 1-4 of each test period after eccentric exercise
Pain will be assessed verbally during elbow flexion and extension using a 10-point Likert scale (with 1 = normal, no discomfort and 10 = very uncomfortable).
Time frame: Days 1-4 of each test period after eccentric exercise
Flexibility of the biceps muscle group will be evaluated with the arm hanging freely at the subject's side. The relaxed extension will be measured using an electronic level and electronic goniometer placed at the elbow.
Time frame: Days 1-4 of each test period after eccentric exercise
Girth measurements will be taken around the elbow.
Time frame: Days 1-4 of each test period after eccentric exercise
Muscle tenderness scores will be assessed using a standard manual muscle myometer. Decreasing force application after baseline indicates increasing tenderness, a reflection of muscle damage.
Time frame: Days 1-4 of each test period after eccentric exercise
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Industry
The Effects of a Polyherbal Supplement on the Signs and Symptoms of Delayed Onset Muscle Soreness: a 2-arm, Randomized, Double-blind, Placebo-controlled, Crossover Design Study
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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