Evidence map›Paper›PMID 23717771›Full record

ArticleInternational journal of preventive medicine2013

Effect of eight weeks of quercetin supplementation on exercise performance, muscle damage and body muscle in male badminton players.

Pooya Daneshvar, Mitra Hariri, Reza Ghiasvand, Gholamreza Askari, Leila Darvishi, Nafiseh Shokri Mashhadi, Hossein Khosravi-Boroujeni

Open access · greenAbstract read
In one paragraph

Article in International journal of preventive medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 27% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Antioxidants for preventing and reducing muscle soreness after exercise.The Cochrane database of systematic reviews · 2017
    Pooled it
  2. Trial
  3. The effect of quercetin and citrulline on cycling time trial performance.Journal of the International Society of Sports Nutrition · 2024
    Trial
  4. Review
  5. Review
  6. Review
  7. Review
  8. Quercetin in Sports and Exercise: A review.International journal of exercise science · 2023
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
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

7 authors at 2 institutions in 1 country.

Pooya DaneshvarChild Growth and Development Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Mitra Hariri
Reza Ghiasvand
Gholamreza Askari
Leila Darvishi
Nafiseh Shokri Mashhadi
Hossein Khosravi-Boroujeni
Isfahan University of Medical Sciences · IRIslamic Azad University of Falavarjan · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundQuercetin is a bioflavonoid which occurs in many food items. Some previous studies on quercetin showed inconsistent results on exercise performance, muscle damage and body muscle in athletes. The aim of this study was to determine the effects of eight weeks of quercetin supplementation on exercise performance, muscle damage indices and body muscle in badminton players.

methodsThis placebo-controlled, double-blind clinical trial was conducted on 26 badminton players for eight weeks. The subjects were randomly assigned to one of two groups to receive quercetin (1000 mg) or placebo (1000 mg dextrose). VO2 and time to exhaustion (TTE) for measuring performance and body fat percentage (BFP) were measured before and after intervention. Plasma sample swere obtained for the determination of plasma lactate before and after intervention.

resultsLactate concentration, body fat percentage and VO2 max did not show any significant difference (P > 0/05) after eight weeks of supplementation with placebo and quercetin between two groups and within one group. There was a significant increase in TTE after intervention in the quercetin group (P < 0/05) but a significant change was not observed in the placebo group (P > 0/05).

conclusionsThe current study shows that intake of quercetin may improve endurance exercise performance but may not reduce the body fat percentage.

Indexed as

Body massexercise performancemuscle damagequercetin

Identifiers

PMID23717771
PMCPMC3665027
OpenAlexW2171753029

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.