The effect of different dosages of caffeine on endurance performance time
Pasman WJ, van Baak MA, Jeukendrup AE, de Haan A
International journal of sports medicine · 111 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 1995-05-01 · Int J Sports Med · vol. 16 · número 04 · págs. 225–230
- Editorial
- Thieme Medical Publishers (Germany)
- Citado
- 260 citas · más que el 89% de estudios similares · 2.3× el promedio de su campo
- Referencias
- 0 trabajos
- Acceso
- Acceso abierto (copia en repositorio)
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Muscle metabolism and nutrition
- Palabras clave
- caffeine, endurance performance, caffeine dosage, dose-response relationship, cyclists, free fatty acids, glycerol, doping limits, ergogenic aids, exhaustive exercise
- MeSH
- humans, glycerol, caffeine, fatty acids, nonesterified, double-blind method, physical endurance, dose-response relationship, drug, bicycling, adult
4 autores
- Wilrike J. Pasman🇳🇱Maastricht University
- Marleen A. van Baak🇳🇱Maastricht University
- Asker Erik Jeukendrup🇳🇱Maastricht University
- ARNOLD DE HAAN🇳🇱Vrije Universiteit Amsterdam
Resumen
El texto original del estudio, en el idioma en que se publicó.
The effect of different dosages of caffeine (0-5-9-13 mg.kg body weight-1) on endurance performance was examined. Nine well-trained cyclists participated in this study (VO2max 65.1 +/- 2.6 ml.kg-1.min-1). Caffeine capsules were administered in random order and double-blind. One hour after capsule ingestion, subjects cycled until exhaustion at 80% Wmax on an electromagnetically braked cycle ergometer. Blood samples were taken before, during and after the exercise test. Before and after the test a urine sample was obtained. A significant increase in endurance performance was found for all caffeine tests compared to placebo (endurance time 47 +/- 13, 58 +/- 11, 59 +/- 12 and 58 +/- 12 min for 0, 5, 9 and 13 mg.kg-1 body weight, respectively). No differences were found in endurance performance between the three caffeine dosages which indicates that no dose-response relation of caffeine and endurance performance was found. An increased free fatty acid and glycerol concentration was found after caffeine consumption compared with placebo. The mean urinary caffeine concentrations after exercise were 4.8 +/- 1.8, 8.9 +/- 5.2 and 14.9 +/- 6.9 micrograms.ml-1 urine for 5, 9 and 13 mg of caffeine.kg-1 body weight. Only the lowest dose of caffeine resulted in urine caffeine concentrations below the doping limit of the International Olympic Committee of 12 micrograms.ml-1 urine in all individuals. It is concluded that caffeine is an ergogenic aid that stimulates endurance performance. A dose-response relation between caffeine and endurance time was not found for the dose-range investigated.(ABSTRACT TRUNCATED AT 250 WORDS)
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