Can Creatine Supplementation Interfere with Muscle Strength and Fatigue in Brazilian National Level Paralympic Powerlifting?
Soares Freitas Sampaio CR, Aidar FJ, Ferreira ARP, Santos JLD, Marçal AC, Matos DG, Souza RF, Moreira OC, Guerra I, Fernandes Filho J, Marcucci-Barbosa LS, Nunes-Silva A, Almeida-Neto PF, Cabral BGAT, Reis VM
Nutrients · 18 citations
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
Based on full-text disclosure statement.
Publication
- Published
- 2020-08-19 · Nutrients · vol. 12 · issue 9 · p. 2492
- Publisher
- Multidisciplinary Digital Publishing Institute
- Cited
- 34 citations · more than 89% of similar papers · 2.4× the field average
- References
- 42 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Muscle metabolism and nutrition · Sports Performance and Training · Exercise and Physiological Responses
- Keywords
- Isometric exercise, Placebo, Medicine, Washout, Creatine, Physical therapy, Internal medicine
- MeSH
- muscle, skeletal, humans, creatine, single-blind method, muscle fatigue, isometric contraction, torque, weight lifting, dietary supplements, adult, brazil, male, muscle strength, young adult, sports nutritional physiological phenomena, para-athletes
15 authors
From BR, PT
- Carlos Rodrigo Soares Freitas SampaioUniversidade Federal de Sergipe
- Felipe J. Aidar · correspondingUniversidade Federal de Sergipe
- Alexandre Reis Pires FerreiraUniversidade de Brasília
- Jymmys Lopes dos SantosUniversidade Federal de Sergipe
- Anderson Carlos MarçalUniversidade Federal de Sergipe
- Dihogo Gama de MatosUniversidade Federal de Sergipe
Abstract
The aim of the present study was to analyze the effect of creatine (Cr) supplementation on peak torque (PT) and fatigue rate in Paralympic weightlifting athletes. Eight Paralympic powerlifting athletes participated in the study, with 25.40 ± 3.30 years and 70.30 ± 12.15 kg. The measurements of muscle strength, fatigue index (FI), peak torque (PT), force (kgf), force (N), rate of force development (RFD), and time to maximum isometric force (time) were determined by a Musclelab load cell. The study was performed in a single-blind manner, with subjects conducting the experiments first with placebo supplementation and then, following a 7-day washout period, beginning the same protocol with creatine supplementation for 7 days. This sequence was chosen because of the lengthy washout of creatine. Regarding the comparison between conditions, Cr supplementation did not show effects on the variables of muscle force, peak torque, RFD, and time to maximum isometric force (p > 0.05). However, when comparing the results of the moments with the use of Cr and placebo, a difference was observed for the FI after seven days (U3: 1.12; 95% CI: (0.03, 2.27); p = 0.02); therefore, the FI was higher for placebo. Creatine supplementation has a positive effect on the performance of Paralympic powerlifting athletes, reducing fatigue index, and keeping the force levels as well as PT.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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