The effects of caffeine ingestion on time trial cycling performance
McNaughton LR, Lovell RJ, Siegler J, Midgley AW, Moore L, Bentley DJ
International journal of sports physiology and performance · 34 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
- 2008-06-01 · Int J Sports Physiol Perform · vol. 3 · número 2 · págs. 157–163
- Editorial
- Human Kinetics
- Citado
- 80 citas · más que el 83% de estudios similares · 1.9× el promedio de su campo
- Referencias
- 28 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Thermoregulation and physiological responses
- Palabras clave
- caffeine ingestion, cycling time trial, cycling performance, well-trained cyclists, blood lactate, heart rate, caffeine supplementation, endurance exercise
- MeSH
- humans, lactic acid, caffeine, central nervous system stimulants, double-blind method, oxygen consumption, time factors, bicycling, adolescent, adult, male, athletic performance, young adult
6 autores
- Lars Robert McNaughton🇬🇧University of Hull
- Ric J. Lovell🇬🇧University of Hull
- Jason Charles Siegler🇬🇧University of Hull
- Adrian Wayne Midgley🇬🇧University of Hull
- L. Moore🇬🇧University of Hull
- David J. Bentley🇦🇺UNSW Sydney
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
The purpose of this work was to determine the effects of caffeine on high intensity time trial (TT) cycling performance in well-trained subjects.
Subjects
Six male cyclists with the following physical characteristics (mean +/- SD) age 30.7 +/- 12, height 179.3 +/- 7.5 cm, mass 70.0 +/- 7.5 kg, VO2max 65.0 +/- 6.3 mL.kg-1.min-1 undertook three 1-h TT performances, control (C), placebo (P) and caffeine (CAF), on a Velotron cycle ergometer conducted in a double-blind, random fashion. Subjects rested for 60 min and were then given CAF or P in a dose of 6 mg.kg-1 body mass and then commenced exercise after another 60 min of rest. Before ingestion, 60 min postingestion, and at the end of the TT, finger-prick blood samples were analyzed for lactate.
Results
The cyclists rode significantly further in the CAF trial (28.0 +/- 1.3 km) than they did in the C (26.3 +/- 1.5 km, P .05). Blood lactate levels were significantly higher at the end of the trials than either at rest or postingestion (P < .0001), but there were no differences between the three trial groups.
Conclusion
On the basis of the data, we concluded that performance was improved with the use of a caffeine supplement.
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