Women Experience the Same Ergogenic Response to Caffeine as Men
Skinner TL, Desbrow B, Arapova J, Schaumberg MA, Osborne J, Grant GD, Anoopkumar-Dukie S, Leveritt MD
Medicine and science in sports and exercise · 53 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
- 2019-01-15 · Med Sci Sports Exerc · vol. 51 · número 6 · págs. 1195–1202
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 68 citas · más que el 97% de estudios similares · 6.2× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 36 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Muscle metabolism and nutrition · Obesity, Physical Activity, Diet
- Palabras clave
- Caffeine, Psychology, Medicine, Physical therapy, Internal medicine
- MeSH
- humans, caffeine, central nervous system stimulants, body mass index, cross-over studies, double-blind method, sex factors, heart rate, physical endurance, bicycling, adult, female, male, young adult, performance-enhancing substances
8 autores
- Tina L. Skinner🇦🇺🇧🇪The University of Queensland; Nutrition Sciences (Belgium)
- Ben Desbrow🇦🇺Griffith University
- JULIA ARAPOVA🇦🇺🇧🇪The University of Queensland; Nutrition Sciences (Belgium)
- Mia Annalies Schaumberg🇦🇺🇧🇪The University of Queensland; University of the Sunshine Coast; Nutrition Sciences (Belgium)
- John Owen Osborne🇦🇺🇧🇪Queensland University of Technology; The University of Queensland; Nutrition Sciences (Belgium)
- Gary Dean Grant🇦🇺Griffith University
- Shailendra Anoopkumar‐Dukie🇦🇺Griffith University
- MICHAEL D. LEVERITT🇦🇺🇧🇪The University of Queensland; Nutrition Sciences (Belgium)
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
This study aimed to determine whether 1) consumption of caffeine improves endurance cycling performance in women and 2) sex differences exist in the magnitude of the ergogenic and plasma responses to caffeine supplementation.
Methods
Twenty-seven (11 women and 16 men) endurance-trained cyclists and triathletes participated in this randomized, double-blind, placebo-controlled, crossover study. Participants completed an incremental exercise test to exhaustion, two familiarization trials, and two performance trials. Ninety minutes before the performance trials, participants ingested opaque capsules containing either 3 mg·kg body mass of anhydrous caffeine or a placebo. They then completed a set amount of work (75% of peak sustainable power output) in the fastest possible time. Plasma was sampled at baseline, preexercise, and postexercise for caffeine. Strict standardization and verification of diet, hydration, training volume and intensity, and contraceptive hormone phase (for women) were implemented.
Results
Performance time was significantly improved after caffeine administration in women (placebo: 3863 ± 419 s, caffeine: 3757 ± 312 s; P = 0.03) and men (placebo: 3903 ± 341 s, caffeine: 3734 ± 287 s; P < 0.001). The magnitude of performance improvement was similar for women (mean = 4.3%, 95% CI = 0.4%-8.2%) and men (4.6%, 2.3%-6.8%). Plasma caffeine concentrations were similar between sexes before exercise, but significantly greater in women after exercise (P < 0.001).
Conclusions
Ingestion of 3 mg·kg body mass of caffeine enhanced endurance exercise performance in women. The magnitude of the performance enhancement observed in women was similar to that of men, despite significantly greater plasma caffeine concentrations after exercise in women. These results suggest that the current recommendations for caffeine intake (i.e., 3-6 mg·kg caffeine before exercise to enhance endurance performance), which are derived almost exclusively from studies on men, may also be applicable to women.
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