NDLI: Effect of Beta alanine and sodium bicarbonate supplementation on repeated-sprint performance.

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Effect of Beta alanine and sodium bicarbonate supplementation on repeated-sprint performance.

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Effect of Beta alanine and sodium bicarbonate supplementation on repeated-sprint performance.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ducker, Kagan J. Dawson, Brian Wallman, Karen E.
Description	Country affiliation: Australia Author Affiliation: Ducker KJ ( School of Sport Science, Exercise and Health, The University of Western Australia, Crawley, Australia.)
Abstract	This study aimed to investigate if combining beta alanine (BA) and sodium bicarbonate (NaHCO3) supplementation could lead to enhanced repeated-sprint performance in team-sport athletes, beyond what is possible with either supplement alone. Participants (n = 24) completed duplicate trials of a repeated-sprint test (3 sets; 6 × 20 m departing every 25 seconds, 4 minutes active recovery between sets) and were then allocated into 4 groups as follows: BA only (n = 6; 28 days BA, acute sodium chloride placebo); NaHCO3 only (n = 6; 28 days glucose placebo, acute NaHCO3); BA/NaHCO3 (n = 6; 28 days BA, acute NaHCO3); placebo only (n = 6; 28 days glucose placebo, acute sodium chloride placebo), then completed duplicate trials postsupplementation. Sodium bicarbonate alone resulted in moderate effect size (d = 0.40-0.71) and 'likely' and 'very likely' benefit for overall total sprint times (TST) and for each individual set and for first sprint (sets 2 and 3) and best sprint time (sets 2 and 3). Combining BA and NaHCO3 resulted in 'possible' to 'likely' benefits for overall TST and for sets 2 and 3. First sprint (set 3) and best sprint time (sets 2 and 3) also showed 'likely' benefit after this trial. The BA and placebo groups showed no differences in performance after supplementation. In conclusion, these results indicate that supplementation with acute NaHCO3 improved repeated-sprint performance more than either a combination of NaHCO3 and BA or BA alone.
File Format	HTM / HTML
ISSN	10648011
Issue Number	12
Volume Number	27
e-ISSN	15334287
Journal	Journal of Strength and Conditioning Research
Language	English
Publisher	Lippincott Williams & Wilkins
Publisher Date	2013-12-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Sport Sciences Athletic Performance Physiology Dietary Supplements Exercise Test Drug Effects Performance-enhancing Substances Pharmacology Running Sodium Bicarbonate Beta-alanine Adolescent Adult Drug Administration Schedule Humans Male Outcome And Process Assessment (health Care) Administration & Dosage Time Factors Young Adult Journal Article Randomized Controlled Trial
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science

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