LU IRB#: IRB-22-30
PI: Chad Kerksick, PhD
Description of Study
The purpose of this study is to examine the thermogenic effects of individual and combined dosages of caffeine and paraxanthine.
Exercise and Performance Nutrition Laboratory (Fieldhouse 126)
209 S. Kingshighway
St. Charles, MO 63301
Number of Visits
Visits 1: 30 Minutes
Visits 2-8: 4 Hours Each
$500 (Direct Deposit)
Point of Contact
Joesi Krieger and Kristen Gross
Research Sample Needed
- 20 recreationally active men and women
- Between the ages of 18-39 years.
- Healthy and free of disease.
- Is not taking any additional forms of nutritional supplementation (pre-workouts, creatine, beta-alanine, thermogenic supplements, etc.) for four weeks prior to beginning this study and for the entire duration of the study.
- Participating in at least 30 minutes of moderate exercise 3 days per week.
- Body mass index (BMI) between 18.5 – 25 kg/m2.
- If BMI is between 25 – 30 kg/ m2 body-fat percentage must be <32% (for females) and <25% (for males).
- Not currently restricting calories or completing a dieting program.
- Moderate caffeine consumers (approximately 200 mg of caffeine per day).
- Individuals <18 and >40 years of age.
- Currently being treated for or diagnosed with a cardiac, respiratory, circulatory, musculoskeletal, metabolic, obesity (defined as body mass index > 30 kg/m2), immune, autoimmune, psychiatric, hematological, neurological, or endocrinological disorder or disease will be excluded.
- Regular (>3 days/week) administration of thermogenic supplements or other weight loss aids in the past 60 days.
- Not meeting minimum exercise guidelines (30 minutes per day, 3 days per week) or exceeding 8 hours of exercise per week will be excluded.
- Daily intake of caffeine doses exceeding 300 mg/day.
- Participants who do not or are not willing to abstain from alcohol, nicotine, and caffeine for 12 hours prior to each visit will be excluded.
- Participants who do not or are not willing to abstain from exercise for 24 hours prior to each visit will be excluded.
- Participants who do not or are not willing to follow the prescribed dietary control leading up to each exercise bout will be excluded.
- Individuals who are pregnant, nursing, or trying to get pregnant.
Are You Eligible?
Information provided here reflects current IRB approval for this research. However, this information may be subject to change and updated accordingly.
- Economic Education Center
Exercise and Performance Nutrition Lab (EPNL)
Participate in Research
- A Pilot Study to Examine Changes in Resistance Training Adaptations After Leucine and Dileucine Ingestion
- A Randomized, Crossover Pilot to Examine the Acute Impact of Veillonella Supplementation on Exercise and Lactate Responses
- A Randomized Double-Blind Prospective Evaluation of the Cognitive Impacts of a Dietary Supplement in Healthy Adults
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