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 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2021-03-24 · J Diet Suppl · vol. 19 · issue 5 · pp. 587–602
- Publisher
- Taylor & Francis
- Cited
- 36 citations · more than 87% of similar papers · 2.2× the field average
- References
- 37 works
- Access
- Paywalled
- Research areas
- Muscle metabolism and nutrition · Exercise and Physiological Responses · Cardiovascular and exercise physiology
- Keywords
- 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 authors
From CA, IT
- Avery PakulakUniversity of Regina
- Darren Glenn Candow · correspondingUniversity of Regina
- Julia O. Totosy de ZepetnekUniversity of Regina
- Scott C. ForbesBrandon University
- Daniele BastaUniversity of Calabria
Abstract
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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