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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2098780/

|J Int Soc Sports Nutr. 2007; 4: 10. |PMCID: PMC2098780 |
|Published online 2007 October 5. doi: 10.1186/1550-2783-4-10. | |

Copyright © 2007 Taylor et al; licensee BioMed Central Ltd.
Acuteeffects of ingesting Java Fit™ energy extreme functional coffee on resting energy expenditure and hemodynamic responses in male and female coffee drinkers
Lemuel W Taylor,1 Colin D Wilborn,2 Travis Harvey,3 Jennifer Wismann,4 and Darryn S Willoughby[pic]4
1Exercise Biochemistry Laboratory, Department of Health, Leisure, and Exercise Science, the University of West Florida, Pensacola, FL, USA2Department of Exercise and Sport Science, University of Mary-Hardin Baylor, Belton, TX, USA
3Department of Physical Education Center for Physical Development Excellence, United States Military Academy, West Point, NY 10996 USA
4Exercise and Biochemical Nutrition Laboratory, Center for Exercise, Nutrition, and Preventive Health Research, Department of Health, Human Performance, and Recreation, BaylorUniversity, Waco, TX, USA
[pic]Corresponding author.
Lemuel W Taylor: ltayloriv@uwf.edu[pic]; Colin D Wilborn: cwilborn@umhb.edu[pic]; Travis Harvey: Travis.Harvey@usma.edu[pic]; Jennifer Wismann: Jen_Wismann@baylor.edu[pic]; Darryn S Willoughby: Darryn_Willoughby@baylor.edu[pic]
Received August 28, 2007; Accepted October 5, 2007.
This is an Open Access article distributed under the terms ofthe Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
[pic]This article has been cited by other articles in PMC.

Abstract
Background
The purpose of this study was to examine the effects of a functional coffee beverage containingadditional caffeine, green tea extracts, niacin and garcinia cambogia to regular coffee to determine the effects on resting energy expenditure (REE) and hemodynamic variables.
Methods
Subjects included five male (26 ± 2.1 y, 97.16 ± 10.05 kg, 183.89 ± 6.60 cm) and five female (28.8 ± 5.3 y, 142.2 ± 12.6 lbs) regular coffee drinkers. Subjects fasted for 10 hours and were assessed for 1 hour prior (PRE)and 3 hours following 1.5 cups of coffee ingestion [JavaFit™ Energy Extreme (JF) ~400 mg total caffeine; Folgers (F) ~200 mg total caffeine] in a double-blind, crossover design. REE, resting heart rate (RHR), and systolic (SBP) and diastolic (DBP) blood pressure was assessed at PRE and 1, 2, and 3-hours post coffee ingestion. Data were analyzed by three-factor repeated measures ANOVA (p < 0.05).Results
JF trial resulted in a significant main effect for REE (p < 0.01), SBP (p < 0.01), RER (p < 0.01), and VO2 (p < 0.01) compared to F, with no difference between trials on the RHR and DBP variables. A significant interaction for trial and time point (p < 0.05) was observed for the variable REE. The JF trial resulted in a significant overall mean increase in REE of 14.4% (males = 12.1%,females = 17.9%) over the observation period (p < 0.05), while the F trial produced an overall decrease in REE of 5.7%. SBP was significantly higher in the JF trial; however, there was no significant increase from PRE to 3-hours post.
Conclusion
Results from this study suggest that JavaFit™ Energy Extreme coffee is more effective than Folgers regular caffeinated coffee at increasing REE in regularcoffee drinkers for up to 3 hours following ingestion without any adverse hemodynamic effects.

Background
The popularity of thermogenic supplements containing caffeine and other herbal products has increased over the past few years. In the U.S., approximately 110 million Americans drink coffee daily, while another 51 million are occasional coffee drinkers. Coffee generally contains caffeine in...