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Ketogenic diet benefits body composition and well-being but not performance in a pilot case study of New Zealand endurance athletes

Overview of attention for article published in Journal of the International Society of Sports Nutrition, April 2022
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#39 of 869)
  • High Attention Score compared to outputs of the same age (99th percentile)

Mentioned by

news
21 news outlets
blogs
1 blog
twitter
157 tweeters
facebook
28 Facebook pages
googleplus
1 Google+ user
video
10 video uploaders

Citations

dimensions_citation
47 Dimensions

Readers on

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411 Mendeley
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Title
Ketogenic diet benefits body composition and well-being but not performance in a pilot case study of New Zealand endurance athletes
Published in
Journal of the International Society of Sports Nutrition, April 2022
DOI 10.1186/s12970-017-0180-0
Pubmed ID
Authors

Caryn Zinn, Matthew Wood, Mikki Williden, Simon Chatterton, Ed Maunder

Abstract

Low-carbohydrate, high-fat and ketogenic diets are increasingly adopted by athletes for body composition and sports performance enhancements. However, as yet, there is no consensus on their efficacy in improving performance. There is also no comprehensive literature on athletes' experiences while undertaking this diet. The purpose of this pilot work was two-fold: i. to examine the effects of a non-calorie controlled ketogenic diet on body composition and performance outcomes of endurance athletes, and ii. to evaluate the athletes' experiences of the ketogenic diet during the 10-week intervention. Using a case study design, five New Zealand endurance athletes (4 females, 1 male) underwent a 10-week ketogenic dietary intervention. Body composition (sum of 8 skinfolds), performance indicators (time to exhaustion, VO2 max, peak power and ventilatory threshold), and gas exchange thresholds were measured at baseline and at 10 weeks. Mean change scores were calculated, and analysed using t-tests; Cohen's effect sizes and 90% confidence limits were applied to quantify change. Individual interviews conducted at 5 weeks and a focus group at 10 weeks assessed athletes' ketogenic diet experiences. Data was transcribed and analysed using thematic analysis. All athletes increased their ability to utilise fat as a fuel source, including at higher exercise intensities. Mean body weight was reduced by 4 kg ± SD 3.1 (p = 0.046; effect size (ES):0.62), and sum of 8 skinfolds by 25.9 mm ± SD 6.9; ES: 1.27; p = 0.001). Mean time to exhaustion dropped by ~2 min (±SD 0.7; p = 0.004; ES: 0.53). Other performance outcomes showed mean reductions, with some increases or unchanged results in two individuals (VO2 Max: -1.69 ml.kg.min ± SD 3.4 (p = 0.63); peak power: -18 W ± SD 16.4 (p = 0.07), and VT2: -6 W ± SD 44.5 (p = 0.77). Athletes reported experiencing reduced energy levels initially, followed by a return of high levels thereafter, especially during exercise, but an inability to easily undertake high intense bouts. Each athlete reported experiencing enhanced well-being, included improved recovery, improvements in skin conditions and reduced inflammation. Despite performance decrements and some negative experiences, athletes were keen to pursue a modified low-carbohydrate, high-fat eating style moving forward due to the unexpected health benefits they experienced. ACTRN: ACTRN12617000613303. Registered 28 April 2017, retrospectively registered.

Twitter Demographics

The data shown below were collected from the profiles of 157 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 411 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 411 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 89 22%
Student > Master 78 19%
Other 28 7%
Student > Ph. D. Student 26 6%
Researcher 25 6%
Other 63 15%
Unknown 102 25%
Readers by discipline Count As %
Nursing and Health Professions 74 18%
Sports and Recreations 74 18%
Medicine and Dentistry 52 13%
Biochemistry, Genetics and Molecular Biology 36 9%
Agricultural and Biological Sciences 26 6%
Other 32 8%
Unknown 117 28%

Attention Score in Context

This research output has an Altmetric Attention Score of 284. 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 08 August 2022.
All research outputs
#93,021
of 21,800,360 outputs
Outputs from Journal of the International Society of Sports Nutrition
#39
of 869 outputs
Outputs of similar age
#2,433
of 283,595 outputs
Outputs of similar age from Journal of the International Society of Sports Nutrition
#1
of 1 outputs
Altmetric has tracked 21,800,360 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 869 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 55.1. 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 283,595 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 99% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them