title: Effect of nutritionally enriched coffee consumption on aerobic and anaerobic exercise performance.
abstract: The purpose of this study was to compare nutritionally enriched JavaFit coffee (JF) to commercially available decaffeinated coffee (P) with regard to impact on endurance and anaerobic power performance in a physically active, college-aged population. Ten subjects (8 men, 2 women) performed two 30-second Wingate anaerobic power tests and 2 cycle ergometer tests (75% VO2 max) to exhaustion. Mean VO2 was measured during each endurance exercise protocol. Excess postexercise oxygen consumption (EPOC) and respiratory exchange ratio (RER) were recorded for 30 minutes following all exercise sessions. Area under the curve analysis was used to compare EPOC between JF and P for all exercise sessions. No differences were seen between JF and P in any of the power performance measures. However, time to exhaustion was significantly (p = 0.05) higher in JF (35.3 +/- 15.2 minutes) compared with P (27.3 +/- 10.7 minutes). No difference between JF and P were seen in EPOC in either the aerobic or anaerobic exercise sessions. A significant (p < 0.05) difference in average 30-minute postanaerobic power exercise RER was seen between JF (0.87 +/- 0.04) and P (0.83 +/- 0.03), but not following endurance exercise. A nutritionally-enriched coffee beverage appears to enhance time to exhaustion during aerobic exercise, but does not provide an ergogenic benefit during anaerobic exercise.
authors.affiliation: The College of New Jersey, Ewing, New Jersey 08628, USA. hoffmanj@tcnj.edu
authors.forename: Jay R
authors.initials: JR
authors.lastname: Hoffman
authors.forename: Jie
authors.initials: J
authors.lastname: Kang
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Ratamess
authors.forename: Peter F
authors.initials: PF
authors.lastname: Jennings
authors.forename: Gerald T
authors.initials: GT
authors.lastname: Mangine
authors.forename: Avery D
authors.initials: AD
authors.lastname: Faigenbaum
mesh_terms: D000328:Adult; D015308:Anaerobic Threshold / Q000187:drug effects; D019540:Area Under Curve; D002857:Chromium; D002957:Citrus; D003069:Coffee; D018592:Cross-Over Studies; D019587:Dietary Supplements; D004311:Double-Blind Method; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D029760:Garcinia; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000187:drug effects; D011659:Pulmonary Gas Exchange / Q000187:drug effects
chemical_list: D003069:Coffee; D002857:Chromium