The influence of caffeine ingestion on strength and power performance in female team-sport players
Ali A, O'Donnell J, Foskett A, Rutherfurd-Markwick K
Journal of the International Society of Sports Nutrition · 47 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
Según la declaración de financiación del texto completo.
Publicación
- Publicado
- 2016-01-05 · J Int Soc Sports Nutr · vol. 13 · número 1 · pág. 46
- Editorial
- Springer Science+Business Media
- Citado
- 59 citas · más que el 91% de estudios similares · 3.1× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 38 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Coffee research and impacts · Muscle metabolism and nutrition · Hormonal and reproductive studies
- Palabras clave
- Medicine, Caffeine, Eccentric, Isometric exercise, Placebo, Physical therapy, Crossover study, Treadmill, Leg press, Internal medicine, Muscle strength
- MeSH
- knee, muscle, skeletal, humans, caffeine, placebos, exercise, cross-over studies, double-blind method, running, sports, adult, female, muscle strength, athletic performance, young adult
4 autores
- Ajmol Ali🇳🇿 · autor de correspondenciaUniversity of Auckland; Massey University
- Jemma O’Donnell🇳🇿University of Auckland; Massey University
- Andrew Foskett🇳🇿University of Auckland; Massey University
- Kay Janice Rutherfurd-Markwick🇳🇿University of Auckland; Massey University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
The aim of this study was to examine the influence of caffeine supplementation on knee flexor and knee extensor strength before, during and after intermittent running exercise in female team-sport players taking oral contraceptive steroids (OCS).
Method
Ten healthy females (24 ± 4 years; 59.7 ± 3.5 kg; undertaking 2-6 training sessions per week) taking low-dose monophasic oral contraceptives of the same hormonal composition took part in a randomised, double-blind, placebo-controlled crossover-design trial. Sixty minutes following the ingestion of a capsule containing 6 mg∙kg-1 body mass anhydrous caffeine or artificial sweetener (placebo), participants completed a 90-min intermittent treadmill-running protocol. Isometric strength performance and eccentric and concentric strength and power of the knee flexors and knee extensors (using isokinetic dynamometer), as well as countermovement jump (CMJ), was measured before, during and after the exercise protocol, as well as ~12 h post-exercise. Blood samples were taken before, during and post-exercise to measure glucose, insulin and free fatty acids (FFA).
Results
Caffeine supplementation significantly increased eccentric strength of the knee flexors (P P P P < 0.05) while levels of glucose and insulin were not affected by caffeine intake.
Conclusion
Caffeine supplementation increased eccentric strength and power in female team-sport players taking OCS both during an intermittent running protocol and the following morning.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY).
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