Academics

Changes in
Metabolic Rate and Perceptual Indicators After Acute Ingestion of Paraxanthine

Changes in
Metabolic Rate and Perceptual Indicators After Acute Ingestion of Paraxanthine

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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.

Location
Exercise and Performance Nutrition Laboratory (Fieldhouse 126)
209 S. Kingshighway
St. Charles, MO 63301

Number of Visits
8

Time Commitment
Visits 1: 30 Minutes
Visits 2-8: 4 Hours Each

Compensation
$500 (Direct Deposit)

Point of Contact
Joesi Krieger and Kristen Gross
epnl@lindenwood.edu

Research Sample Needed

  • 20 recreationally active men and women

Inclusion Criteria

  • 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).

Exclusion Criteria

  • 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.