Low and moderate doses of caffeine late in exercise improve performance in trained cyclists
Talanian JL, Spriet LL
Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 40 citas
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 independiente
- Universidad u hospital
- McGill University
Según 1 financiador declarado.
Publicación
- Publicado
- 2016-04-01 · Appl Physiol Nutr Metab · vol. 41 · número 8 · págs. 850–855
- Editorial
- NRC Research Press
- Citado
- 55 citas · más que el 95% de estudios similares · 5.4× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 44 trabajos
- Acceso
- Acceso abierto (copia en repositorio)
- Áreas de investigación
- Coffee research and impacts · Muscle metabolism and nutrition · Eating Disorders and Behaviors
- Palabras clave
- Caffeine, Cycling, Time trial, Hematocrit, Animal science, Respiratory exchange ratio, Heart rate, VO2 max, Chemistry, Medicine, Oxygen, Anesthesia, Internal medicine, Blood pressure, Biology
- MeSH
- humans, epinephrine, lactic acid, caffeine, blood glucose, fatty acids, nonesterified, body mass index, double-blind method, oxygen consumption, heart rate, dose-response relationship, drug, time factors, bicycling, female, male, athletic performance, young adult
2 autores
- Jason L. Talanian🇺🇸Fitchburg State University
- Lawrence L. Spriet🇨🇦University of Guelph
Resumen
El texto original del estudio, en el idioma en que se publicó.
The aim of the present study was to assess if low and moderate doses of caffeine delivered in a carbohydrate-electrolyte solution (CES) late in exercise improved time-trial (TT) performance. Fifteen (11 male, 4 female) cyclists (age, 22.5 ± 0.9 years; body mass, 69.3 ± 2.6 kg; peak oxygen consumption, 64.6 ± 1.9 mL·min(-1)·kg(-1)) completed 4 double-blinded randomized trials. Subjects completed 120 min of cycling at ∼60% peak oxygen consumption with 5 interspersed 120-s intervals at ∼82% peak oxygen consumption, immediately followed by 40-s intervals at 50 W. Following 80 min of cycling, subjects either ingested a 6% CES (PL), a CES with 100 mg (low dose, 1.5 ± 0.1 mg·kg body mass(-1)) of caffeine (CAF1), or a CES with 200 mg (moderate dose, 2.9 ± 0.1 mg·kg body mass(-1)) of caffeine (CAF2). Following the 120-min cycling challenge, cyclists completed a 6-kJ·kg body mass(-1) TT. There was no difference between respiratory, heart rate, glucose, free fatty acid, body mass, hematocrit, or urine specific gravity measurements between treatments. The CAF2 (26:36 ± 0:22 min:s) TT was completed faster than CAF1 (27:36 ± 0:32 min:s, p < 0.05) and both CAF1 and CAF2 TTs were completed faster than PL (28:41 ± 0:38 min:s, p < 0.05). Blood lactate was similar between trials and rose to a greater extent during the TT (p < 0.05). In summary, both doses of caffeine delivered late in exercise improved TT performance over the PL trial and the moderate dose (CAF2) improved performance to a greater extent than the low dose (CAF1).
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
Confianza de la comunidad
Cargando…
¿Cuánto confías en los hallazgos de este estudio?
Comentarios
¿Algo está mal aquí?
Señala este estudio si su información, etiquetas o financiación parecen incorrectas. Un editor revisa cada señalamiento.
Información educativa sobre investigación publicada. No es consejo médico ni una recomendación para empezar o dejar nada.