Short-term creatine supplementation has no impact on upper-body anaerobic power in trained wrestlers
Aedma M, Timpmann S, Lätt E, Ööpik V
Journal of the International Society of Sports Nutrition · 18 citations
How it was studied
- Design
- Randomized controlled trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- University or hospital
- Institutional research funding
- Nonprofit
- Research grant of the Estonian Olympic Committee
Based on 2 listed funder(s) and full-text disclosure statement.
Publication
- Published
- 2015-10-20 · J Int Soc Sports Nutr · vol. 12 · issue 1 · p. 45
- Publisher
- Springer Science+Business Media
- Cited
- 33 citations · more than 72% of similar papers · 0.9× the field average
- References
- 61 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Muscle metabolism and nutrition · Sports Performance and Training · Cardiovascular and exercise physiology
- Keywords
- Sprint, Anaerobic exercise, Medicine, Repeated measures design, Analysis of variance, Placebo, Body fat percentage, Heart rate, Animal science, Creatine, Physical therapy, Upper body, Body mass index, Internal medicine, Physical fitness, Mathematics, Statistics, Blood pressure, Biology
- MeSH
- muscle, skeletal, humans, fatigue, creatine, lactates, body mass index, double-blind method, wrestling, dietary supplements, adult, male, athletic performance, physical exertion, torso, sports nutritional physiological phenomena
4 authors
From EE
- Martin AedmaUniversity of Tartu
- Saima TimpmannUniversity of Tartu
- Evelin LättUniversity of Tartu
- Vahur Ööpik · correspondingUniversity of Tartu
Abstract
Background
Creatine (CR) is considered an effective nutritional supplement having ergogenic effects, which appears more pronounced in upper-body compared to lower-body exercise. Nevertheless, results regarding the impact of CR loading on repeated high-intensity arm-cranking exercise are scarce and in some cases conflicting. Interestingly, few of the conducted studies have structured their research designs to mimic real world sporting events. Therefore, our purpose was to address the hypothesis that CR ingestion would increase anaerobic power output in consecutive upper-body intermittent sprint performance (UBISP) tests designed to simulate wrestling matches on a competition-day.
Methods
In a double-blind, placebo-controlled, parallel-group study, 20 trained wrestlers were assigned to either placebo or CR supplemented group (0.3 g ∙ kg(-1) of body mass per day). Four 6-min UBISP tests interspersed with 30-min recovery periods were performed before (trial 1) and after 5 days (trial 2) of supplementation. Each test consisted of six 15-s periods of arm-cranking at maximal executable cadence against resistance of 0.04 kg ∙ kg(-1) body mass interspersed with 40-s unloaded easy cranking periods and 5-s acceleration intervals (T1-T4). Mean power (MP), peak power (PP), fatigue index and heart rate parameters were measured during UBISP tests. Also, body weight and hydration status were assessed. Principle measures were statistical analysed with mixed-model ANOVAs.
Results
Mean individual CR consumption in the CR group was 24.8 ± 2.5 g ∙ d(-1). No significant (P > 0.05) differences occurred in body mass or hydration status indices between the groups or across trials. MP, PP and fatigue index responses were unaffected by supplementation; although, a significant reduction in MP and PP did occurred from T1 to T4 in both trial 1 and 2 (P 0.05).
Conclusion
These results suggest that 5-day CR supplementation has no impact on upper-body muscle anaerobic power output in consecutive UBISP anaerobic tests mimicking wrestling matches on a competition day.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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