Evidence map›Paper›PMID 26077126›Full record

Trial reportEuropean journal of applied physiology2015

Effects of sodium phosphate and beetroot juice supplementation on repeated-sprint ability in females.

Christopher L Buck, Timothy Henry, Kym Guelfi, Brian Dawson, Lars R McNaughton, Karen Wallman

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 6 pooled it
1.4field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 6 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. The Effects of Dietary Nitrate Supplementation on Explosive Exercise Performance: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
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  7. Trial
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  12. Article
  13. Review
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  15. Article
  16. Impact of Nutrition-Based Interventions on Athletic Performance during Menstrual Cycle Phases: A Review.International journal of environmental research and public health · 2021
    Review
  17. ISSN exercise & sports nutrition review update: research & recommendations.Journal of the International Society of Sports Nutrition · 2018
    Review
  18. Effects of beetroot juice supplementation on intermittent high-intensity exercise efforts.Journal of the International Society of Sports Nutrition · 2018
    Review
  19. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Christopher L BuckSchool of Sport Science, Exercise and Health, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia. buckc01@student.uwa.edu.au.
Timothy HenrySchool of Sport Science, Exercise and Health, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
Kym GuelfiSchool of Sport Science, Exercise and Health, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
Brian DawsonSchool of Sport Science, Exercise and Health, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
Lars R McNaughtonDepartment of Sport and Physical Activity, Edge Hill University, St Helens Road, Ormskirk, Lancashire, L39 4QP, UK.
Karen WallmanSchool of Sport Science, Exercise and Health, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
University of Western Australia · AUEdge Hill University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSodium phosphate (SP) and beetroot juice (BJ) supplementation was assessed on repeated-sprint ability (RSA).

methodsThirteen 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.

resultsTotal 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; p < 0.01) after SP compared with placebo and BJ, respectively, for all sets (d = -0.54 to -0.89).

conclusionSP 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.

Indexed as

Athletic PerformanceAdultBeta vulgarisDietary SupplementsFemaleHumansPhosphatesPhysical EndurancePlant ExtractsPhosphatesPlant Extractssodium phosphate20-m sprintsAerobic energyAnaerobic energyErgogenic aidsTeam-sports

Identifiers

PMID26077126
OpenAlexW907147042

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.