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Impact of Dietary Antioxidants on Sport Performance: A Review

Overview of attention for article published in Sports Medicine, March 2015
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (98th percentile)
  • High Attention Score compared to outputs of the same age and source (88th percentile)

Mentioned by

news
4 news outlets
twitter
154 tweeters
facebook
6 Facebook pages
video
1 video uploader

Citations

dimensions_citation
52 Dimensions

Readers on

mendeley
242 Mendeley
Title
Impact of Dietary Antioxidants on Sport Performance: A Review
Published in
Sports Medicine, March 2015
DOI 10.1007/s40279-015-0323-x
Pubmed ID
Authors

Andrea J. Braakhuis, Will G. Hopkins

Abstract

Many athletes supplement with antioxidants in the belief this will reduce muscle damage, immune dysfunction and fatigue, and will thus improve performance, while some evidence suggests it impairs training adaptations. Here we review the effect of a range of dietary antioxidants and their effects on sport performance, including vitamin E, quercetin, resveratrol, beetroot juice, other food-derived polyphenols, spirulina and N-acetylcysteine (NAC). Older studies suggest vitamin E improves performance at altitude, with possible harmful effects on sea-level performance. Acute intake of vitamin E is worthy of further consideration, if plasma levels can be elevated sufficiently. Quercetin has a small beneficial effect for exercise of longer duration (>100 min), but it is unclear whether this benefits athletes. Resveratrol benefits trained rodents; more research is needed in athletes. Meta-analysis of beetroot juice studies has revealed that the nitrate component of beetroot juice had a substantial but unclear effect on performance when averaged across athletes, non-athletes and modes of exercise (single dose 1.4 ± 2.0 %, double dose 0.5 ± 1.9 %). The effect of addition of polyphenols and other components to beetroot juice was trivial but unclear (single dose 0.4 ± 3.2 %, double dose -0.5 ± 3.3 %). Other food-derived polyphenols indicate a range of performance outcomes from a large improvement to moderate impairment. Limited evidence suggests spirulina enhances endurance performance. Intravenous NAC improved endurance cycling performance and reduced muscle fatigue. On the basis of vitamin E and NAC studies, acute intake of antioxidants is likely to be beneficial. However, chronic intakes of most antioxidants have a harmful effect on performance.

Twitter Demographics

The data shown below were collected from the profiles of 154 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 242 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 5 2%
United Kingdom 2 <1%
Canada 2 <1%
Chile 1 <1%
Turkey 1 <1%
Greece 1 <1%
Unknown 230 95%

Demographic breakdown

Readers by professional status Count As %
Student > Master 47 19%
Student > Bachelor 46 19%
Student > Ph. D. Student 40 17%
Researcher 24 10%
Student > Postgraduate 20 8%
Other 65 27%
Readers by discipline Count As %
Sports and Recreations 73 30%
Medicine and Dentistry 38 16%
Nursing and Health Professions 31 13%
Agricultural and Biological Sciences 28 12%
Unspecified 22 9%
Other 50 21%

Attention Score in Context

This research output has an Altmetric Attention Score of 138. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 April 2019.
All research outputs
#106,961
of 13,495,245 outputs
Outputs from Sports Medicine
#109
of 2,196 outputs
Outputs of similar age
#2,417
of 219,785 outputs
Outputs of similar age from Sports Medicine
#4
of 35 outputs
Altmetric has tracked 13,495,245 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,196 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 31.9. This one has done particularly well, scoring higher than 95% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 219,785 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 35 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 88% of its contemporaries.