Effects of Creatine and Caffeine Supplementation During Resistance Training on Body Composition, Strength, Endurance, Rating of Perceived Exertion and Fatigue in Trained Young Adults
Pakulak A, Candow DG, Totosy de Zepetnek J, Forbes SC, Basta D
Journal of dietary supplements · 26 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
- 2021-03-24 · J Diet Suppl · vol. 19 · número 5 · págs. 587–602
- Editorial
- Taylor & Francis
- Citado
- 36 citas · más que el 87% de estudios similares · 2.3× el promedio de su campo
- Referencias
- 37 trabajos
- Acceso
- De pago
- Áreas de investigación
- Muscle metabolism and nutrition · Exercise and Physiological Responses · Cardiovascular and exercise physiology
- Palabras clave
- Creatine Monohydrate, Creatine, Medicine, Placebo, Caffeine, Leg press, Rating of perceived exertion, Physical therapy, Internal medicine, Animal science, Endocrinology, Resistance training, Heart rate, Blood pressure
- MeSH
- muscle, skeletal, humans, fatigue, creatine, caffeine, cellulose, double-blind method, body composition, dietary supplements, muscle strength, physical exertion, resistance training, young adult
5 autores
- Avery Pakulak🇨🇦University of Regina
- Darren Glenn Candow🇨🇦 · autor de correspondenciaUniversity of Regina
- Julia O. Totosy de Zepetnek🇨🇦University of Regina
- Scott C. Forbes🇨🇦Brandon University
- Daniele Basta🇮🇹University of Calabria
Resumen
El texto original del estudio, en el idioma en que se publicó.
The primary purpose was to determine the separate and combined effects of creatine and caffeine supplementation during resistance training on body composition and muscle performance in trained young adults. Twenty-eight participants were randomized to supplement with creatine and caffeine (CR-CAF; n = 9, 22 ± 4 years; 0.1 g·kg-1·d-1 of creatine monohydrate + 3 mg·kg-1·d-1 of caffeine anhydrous micronized powder); creatine (CR; n = 7, 22 ± 4 years, 0.1 g·kg-1·d-1 of creatine + 3 mg·kg-1·d-1 of micronized cellulose), caffeine (CAF; n = 6, 19 ± 1 years, 3 mg·kg-1·d-1 of caffeine + 0.1 g·kg-1·d-1 of maltodextrin) or placebo (PLA; n = 6, 23 ± 7 years, 0.1 g·kg-1·d-1 of maltodextrin + 3 mg·kg-1·d-1 micronized cellulose) one hour prior to performing resistance training for 6 weeks. Before and after training and supplementation, fat-free and fat mass (air-displacement plethysmography), muscle thickness (elbow and knee flexors and extensors; ultrasound), muscle strength (1-repetition maximum [1-RM] for the leg press and chest press), and endurance (one set of repetitions to volitional fatigue using 50% baseline 1-RM for leg press and chest press) were assessed. There was a group x time interaction (p = 0.049) for knee extensor muscle thickness with CR experiencing an increase over time with no changes in the other groups. There were no other between group differences for any variable. In conclusion, creatine supplementation and resistance training results in a small improvement in knee extensor muscle accretion in trained young adults.
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