Cited by 30Muscle metabolism and nutritionSports Performance and TrainingBiochemical effects in animals

Creatine-electrolyte supplementation improves repeated sprint cycling performance: A double blind randomized control study

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Crisafulli, Daniel L., Buddhadev, Harsh H., Brilla, Lorrie R., Chalmers, Gordon R., Suprak, David N., San Juan, Jun G.·2018·Journal of the International Society of Sports Nutrition

Abstract

Background Creatine supplementation is recommended as an ergogenic aid to improve repeated sprint cycling performance. Furthermore, creatine uptake is increased in the presence of electrolytes. Prior research examining the effect of a creatine-electrolyte (CE) supplement on repeated sprint cycling performance, however, did not show post-supplementation improvement. The purpose of this double blind randomized control study was to investigate the effect of a six-week CE supplementation intervention on overall and repeated peak and mean power output during repeated cycling sprints with recovery periods of 2 min between sprints.Methods Peak and mean power generated by 23 male recreational cyclists (CE group: n = 12; 24.0 ± 4.2 years; placebo (P) group: n = 11; 23.3 ± 3.1 years) were measured on a Velotron ergometer as they completed five 15-s cycling sprints, with 2 min of recovery between sprints, pre- and post-supplementation. Mixed-model ANOVAs were used for statistical analyses.Results A supplement-time interaction showed a 4% increase in overall peak power (pre: 734 ± 75 W; post: 765 ± 71 W; p = 0.040; ηp 2 = 0.187) and a 5% increase in overall mean power (pre: 586 ± 72 W; post: 615 ± 74 W; p = 0.019; ηp 2 = 0.234) from pre- to post-supplementation for the CE group. For the P group, no differences were observed in overall peak (pre: 768 ± 95 W; post: 772 ± 108 W; p = 0.735) and overall mean power (pre: 638 ± 77 W; post: 643 ± 92 W; p = 0.435) from pre- to post-testing. For repeated sprint analysis, peak (pre: 737 ± 88 W; post: 767 ± 92 W; p = 0.002; ηp 2 = 0.380) and mean (pre: 650 ± 92 W; post: 694 ± 87 W; p < 0.001; ηp 2 = 0.578) power output were significantly increased only in the first sprint effort in CE group from pre- to post-supplementation testing. For the P group, no differences were observed for repeated sprint performance.Conclusion A CE supplement improves overall and repeated short duration sprint cycling performance when sprints are interspersed with adequate recovery periods.

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  1. [31]Guimbal C Kilimann MW A Na+-dependent creatine transporter in rabbit brain, muscle, heart, and kidney J Biol Chem 1993 268 8418 8421 8473283
  2. [42]Pescatello LS ACSM’s Guidlines for Exercise Testing and Prescription 2014 9 Baltimore Wolters Kluwer/Lippincott Williams & Wilkins

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Authors
Crisafulli, D. L., Buddhadev, H. H., Brilla, L. R., Chalmers, G. R., Suprak, D. N., & San Juan, J. G.
Affiliations
  • Western Washington University (US)
  • Kinesiology Program, Department of Health and Human DevelopmentWestern Washington University Carver 201L, MS 9067, 516 High Street 98225 Bellingham WA USA
Corresponding author
Brilla, Lorrie R.
Venue
Journal of the International Society of Sports Nutrition
Published
2018-01-05
Volume
15
Issue
1
Pages
21-21
ISSN
1550-2783 (ISSN-L)
OpenAlex
W2802277815
Cited by
30
References
70
Citations by year
2026: 2 · 2025: 5 · 2024: 4 · 2023: 5 · 2022: 4 · 2021: 3 · 2020: 5 · 2019: 1 · 2018: 1
FWCI
1.39
Type
journal article
Language
en
Open access
Locations
  • Journal of the International Society of Sports Nutrition (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Western Washington University (MF1655)
  • Albion Laboratories, Inc. (56376)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Physiology › Biochemical effects in animals
Keywords
creatine supplementation, electrolyte supplementation, repeated sprint performance, cycling power output, peak power, average power, ergogenic aids, recreational cyclists, creatine uptake, placebo effect
MeSH terms
Adult, Bicycling, Creatine, Double-Blind Method, Electrolytes, Exercise Test, Humans, Male, Ergometry, Dietary Supplements, Athletic Performance, Young Adult, Sports Nutritional Physiological Phenomena

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