Effects of sodium phosphate and beetroot juice supplementation on repeated-sprint ability in females
| Autor: | Lars R. McNaughton, Karen E. Wallman, Christopher L. Buck, Kym J. Guelfi, Brian Dawson, Timothy Henry |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Adult
Physiology Sodium chemistry.chemical_element Athletic Performance Beetroot Juice Phosphates chemistry.chemical_compound Physiology (medical) Humans Medicine Orthopedics and Sports Medicine Food science biology Plant Extracts business.industry Athletes musculoskeletal neural and ocular physiology Public Health Environmental and Occupational Health General Medicine Human physiology Phosphate biology.organism_classification chemistry Sprint Dietary Supplements Physical Endurance Female Beta vulgaris business human activities Anaerobic exercise |
| Zdroj: | European Journal of Applied Physiology. 115:2205-2213 |
| ISSN: | 1439-6327 1439-6319 |
| DOI: | 10.1007/s00421-015-3201-1 |
| Popis: | Sodium phosphate (SP) and beetroot juice (BJ) supplementation was assessed on repeated-sprint ability (RSA).Thirteen female team-sport participants completed four trials: (1) SP and BJ (SP + BJ), (2) SP and placebo (for BJ), (3) BJ and placebo (for SP) and (4) placebo (for SP + BJ), with ~21 days separating each trial. After each trial, participants performed a simulated team-game circuit (STGC) consisting of four 15 min quarters, with a 6 × 20-m repeated-sprint set performed at the start, half-time and end.Total sprint times were between 0.95-1.30 and 0.83-1.12 s faster for each RSA set and 3.25 and 3.12 s faster overall (~5% improvement) after SP compared with placebo and BJ, respectively (p = 0.02 for sets 1, 2 and overall; Cohen's effect size: d = -0.51 to -0.90 for all sets and overall). Additionally, total sprint times were 0.48 s faster after SP + BJ compared with placebo (set 2; p = 0.05, ~2% improvement). Furthermore, best sprints were 0.13-0.23 and 0.15-0.20 s faster (~6% improvement; p0.01) after SP compared with placebo and BJ, respectively, for all sets (d = -0.54 to -0.89).SP improved RSA in team-sport, female athletes when fresh (set 1) and during the later sets of a STGC (sets 2 and 3). Specifically, total and best sprint times were faster after SP compared with placebo and BJ. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink