1998
DOI: 10.1152/jappl.1998.85.2.709
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Abstract: The effect of addition of different dosages of caffeine (Caf) to a carbohydrate-electrolyte solution (CES) on metabolism, Caf excretion, and performance was examined. Subjects (n = 15) ingested 8 ml/kg of water placebo (Pla-W), 7% CES (Pla-CES), or 7% CES with 150, 225, and 320 mg/l Caf (CES-150, CES-225, and CES-320, respectively) during a warm-up protocol (20 min) and 3 ml/kg at one-third and two-thirds of a 1-h time trial. Performance was improved with Caf supplementation: 62.5 +/- 1.3, 61.5 +/- 1.1, 60.4 +… Show more

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Cited by 213 publications
(221 citation statements)
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“…In contrast to the above, the effects of caffeine supplementation on endurance performance are more clearly defined (10,20); with doses of 3 -6 mg•kg -1 producing positive effects (1.2 -4.2%) in time trial events lasting 5 -60 mins (8,9,26,32,39,42). Although the effects of caffeine were originally purported to emanate from a glycogen-sparing mechanism of action, the absence of a (maltodextrin: My Protein, Manchester, UK).…”
Section: Introductionmentioning
confidence: 99%
“…In contrast to the above, the effects of caffeine supplementation on endurance performance are more clearly defined (10,20); with doses of 3 -6 mg•kg -1 producing positive effects (1.2 -4.2%) in time trial events lasting 5 -60 mins (8,9,26,32,39,42). Although the effects of caffeine were originally purported to emanate from a glycogen-sparing mechanism of action, the absence of a (maltodextrin: My Protein, Manchester, UK).…”
Section: Introductionmentioning
confidence: 99%
“…Caffeine coingested with a carbohydrate (CHO) solution has been shown to have no additive effects on substrate use and exercise performance in 3 studies (32,37,62). However, caffeine has also been shown to improve 1-hour time trial cycling performance in a dose-dependent manner, when added to a 7% CHO-electrolyte drink, without having any effects on fat oxidation (39). A recent study showed that caffeine may exert ergogenic properties during exercise, when ingested in combination with a CHO solution, perhaps by increasing exogenous CHO oxidation or intestinal absorption (66).…”
mentioning
confidence: 99%
“…Current results provide additional supportive evidence that caffeine would not compromise fluid balance during and after exercise. [7,[14][15][16] Early literature has suggested that caffeine ingestion exceeding a threshold of 250 -300 mg could result in an acute increase in urine production. [4] Our results suggested that a mean dose of 460 mg caffeine (6 mg/kg of body mass) -enough to enhance physical and cognitive performance [2] -did not alter urine production.…”
Section: Discussionmentioning
confidence: 99%
“…[15] Likewise, following cycling exercise, a moderate dose of 320 mg of caffeinated drinks did not induce additional acute body water loss compared with no caffeine. [16] The influence of exercise on the diuretic effect of caffeine is further evidenced by a study that showed that a large dose of caffeine (8.7 mg/kg of body mass; mean 586 mg) exerted a diuretic effect at rest but not during exercise. [17] This suggests that exercise is a mediating factor on caffeineinduced diuresis in healthy young males.…”
Section: Discussionmentioning
confidence: 99%