Evidence map›Paper›PMID 30155761›Full record

Trial reportEuropean journal of applied physiology2018

Effect of 1-week betalain-rich beetroot concentrate supplementation on cycling performance and select physiological parameters.

Petey W Mumford, Wesley C Kephart, Matthew A Romero, Cody T Haun, C Brooks Mobley, Shelby C Osburn, James C Healy, Angelique N Moore, David D Pascoe, William C Ruffin and 4 more

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 3 pooled it
2.5field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 3 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
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  4. Trial
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  6. Review
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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

14 authors at 3 institutions in 1 country.

Petey W MumfordSchool of Kinesiology, Auburn University, Auburn, AL, USA.
Wesley C KephartUniversity of Wisconsin-Whitewater, Whitewater, WI, USA.
Matthew A RomeroSchool of Kinesiology, Auburn University, Auburn, AL, USA.
Cody T HaunSchool of Kinesiology, Auburn University, Auburn, AL, USA.
C Brooks MobleySchool of Kinesiology, Auburn University, Auburn, AL, USA.
Shelby C OsburnSchool of Kinesiology, Auburn University, Auburn, AL, USA.
James C HealySchool of Kinesiology, Auburn University, Auburn, AL, USA.
Angelique N MooreDepartment of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine, Auburn Campus, 910 S. Donahue Dr., Auburn, AL, 36832, USA.
David D PascoeSchool of Kinesiology, Auburn University, Auburn, AL, USA.
William C RuffinDepartment of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine, Auburn Campus, 910 S. Donahue Dr., Auburn, AL, 36832, USA.
Darren T BeckSchool of Kinesiology, Auburn University, Auburn, AL, USA.
Jeffrey S MartinSchool of Kinesiology, Auburn University, Auburn, AL, USA.
Michael D RobertsSchool of Kinesiology, Auburn University, Auburn, AL, USA.
Kaelin C YoungSchool of Kinesiology, Auburn University, Auburn, AL, USA. Kyoung@auburn.vcom.edu.
Auburn University · USEdward Via College of Osteopathic Medicine · USUniversity of Wisconsin–Whitewater · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeBetalains are indole-derived pigments found in beet root, and recent studies suggest that they may exert ergogenic effects. Herein, we examined if supplementation for 7 days with betalain-rich beetroot concentrate (BLN) improved cycling performance or altered hemodynamic and serum analytes prior to, during and following a cycling time trial (TT).

methodsTwenty-eight trained male cyclists (29 ± 10 years, 77.3 ± 13.3 kg, and 3.03 ± 0.62 W/kg) performed a counterbalanced crossover study whereby BLN (100 mg/day) or placebo (PLA) supplementation occurred over 7 days with a 1-week washout between conditions. On the morning of day seven of each supplementation condition, participants consumed one final serving of BLN or PLA and performed a 30-min cycling TT with concurrent assessment of several physiological variables and blood markers.

resultsBLN supplementation improved average absolute power compared to PLA (231.6 ± 36.2 vs. 225.3 ± 35.8 W, p = 0.050, d = 0.02). Average relative power, distance traveled, blood parameters (e.g., pH, lactate, glucose, NOx) and inflammatory markers (e.g., IL-6, IL-8, IL-10, TNFα) were not significantly different between conditions. BLN supplementation significantly improved exercise efficiency (W/ml/kg/min) in the last 5 min of the TT compared to PLA (p = 0.029, d = 0.45). Brachial artery blood flow in the BLN condition, immediately post-exercise, tended to be greater compared to PLA (p = 0.065, d = 0.32).

conclusionsWe report that 7 days of BLN supplementation modestly improves 30-min TT power output, exercise efficiency as well as post-exercise blood flow without increasing plasma NOx levels or altering blood markers of inflammation, oxidative stress, and/or hematopoiesis.

Indexed as

Dietary SupplementsAdultAthletic PerformanceBetalainsBicyclingCross-Over StudiesDouble-Blind MethodHumansMaleOxygen ConsumptionPerformance-Enhancing SubstancesYoung AdultBetalainsPerformance-Enhancing SubstancesBetalainsBlood flowCyclingExercise efficiency

Identifiers

PMID30155761
OpenAlexW2889004508

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.