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Related Experiment Video

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Using a Combination of Indirect Calorimetry, Infrared Thermography, and Blood Glucose Levels to Measure Brown Adipose Tissue Thermogenesis in Humans
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Thermogenic effect from nutritionally enriched coffee consumption.

Jay R Hoffman1, Jie Kang, Nicholas A Ratamess

  • 1The College of New Jersey, Ewing, NJ. hoffmanj@tcnj.edu.

Journal of the International Society of Sports Nutrition
|May 27, 2008
PubMed
Summary
This summary is machine-generated.

Nutritionally enriched coffee may boost resting energy expenditure and increase systolic blood pressure in sensitive individuals. This study investigated the effects of JavaFit coffee on physiological responses in healthy adults.

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Area of Science:

  • Nutritional Science
  • Human Physiology
  • Sports Medicine

Background:

  • Investigating the metabolic and cardiovascular effects of novel dietary supplements is crucial for understanding their impact on human health.
  • Nutritionally enriched coffee, containing ingredients like caffeine, Garcinia Cambogia, Citrus Aurantium, and chromium, is marketed for potential health benefits.
  • Limited research exists on the specific physiological responses to such multi-ingredient beverages in active populations.

Purpose of the Study:

  • To evaluate the impact of a nutritionally enriched coffee (JavaFit) on resting energy expenditure and cardiovascular parameters.
  • To compare the effects of JavaFit coffee against a standard caffeinated coffee in healthy, physically active individuals.

Main Methods:

  • A randomized, double-blind study involving ten healthy subjects.
  • Subjects consumed either JavaFit coffee or regular caffeinated coffee and rested for three hours.
  • Measurements included resting oxygen uptake (VO2), respiratory exchange ratio (RER), heart rate (HR), and blood pressure (BP).

Main Results:

  • While initial analysis showed no overall significant differences, seven out of ten subjects responded positively to JavaFit, exhibiting a 12% increase in VO2.
  • Responders to JavaFit showed a significant increase in systolic blood pressure compared to regular coffee.
  • No significant differences were observed in heart rate or diastolic blood pressure between the two coffee types.

Conclusions:

  • Nutritionally enriched coffee may enhance resting energy expenditure in individuals sensitive to its ingredients.
  • The consumption of this enriched coffee appears to influence cardiovascular dynamics, specifically by increasing systolic blood pressure.
  • Further research is warranted to understand individual variability in response to such supplements.