↓ Skip to main content

Wiley Online Library

Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers

Overview of attention for article published in Journal of Physiology, February 2017
Altmetric Badge

About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • One of the highest-scoring outputs from this source (#3 of 8,441)
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Citations

dimensions_citation
186 Dimensions

Readers on

mendeley
966 Mendeley
Title
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers
Published in
Journal of Physiology, February 2017
DOI 10.1113/jp273230
Pubmed ID
Authors

Louise M. Burke, Megan L. Ross, Laura A. Garvican-Lewis, Marijke Welvaert, Ida A. Heikura, Sara G. Forbes, Joanne G. Mirtschin, Louise E. Cato, Nicki Strobel, Avish P. Sharma, John A. Hawley

Abstract

We investigated the effects of adaptation to a ketogenic low-carbohydrate (CHO), high-fat diet (LCHF) during 3 wk of intensified training on metabolism and performance of world-class endurance athletes. We controlled three isoenergetic diets in elite race walkers: High CHO availability (8.6 g.kg(-) 1.d(-1) CHO, 2.1 g.kg(-) 1.d(-1) protein; 1.2 g.kg(-) 1.d(-1) fat) consumed before/during/after training (HCHO, n = 9): identical macronutrient intake, periodised within/between days to alternate between low and high CHO availability (PCHO, n = 10); LCHF (<50 g.d(-1) CHO; 78% energy as fat; 2.1 g.kg(-) 1.d(-1) protein; LCHF, n = 10). Post-intervention, VO2 peak during race walking increased in all groups (P < 0.001, 90%CI: [2.55 - 5.20%]). LCHF was associated with markedly increased rates of whole-body fat oxidation, attaining peak rates of 1.57 ± 0.32 g.min(-1) during 2 h of walking at ∼80%VO2 peak. However, LCHF also increased the oxygen (O2 ) cost of race walking at velocities relevant to real-life race performance: O2 uptake (expressed as % of new VO2peak ) at a speed approximating 20 km race pace was reduced in HCHO and PCHO (90%CI:[-7.047;-2.55] and [-5.18;-0.86], respectively, but was maintained at pre-intervention levels in LCHF. HCHO and PCHO groups improved times for 10 km race walk: 6.6% (90% CI: [4.1; 9.1%]) and 5.3% [3.4; 7.2%], with no improvement (-1.6% [-8.5; 5.3%] for the LCHF group. In contrast to training with diets providing chronic or periodised high-CHO availability, and despite a significant improvement in VO2peak , adaptation to the topical LCHF diet negated performance benefits in elite endurance athletes, in part, due to reduced exercise economy. This article is protected by copyright. All rights reserved.

Twitter Demographics

The data shown below were collected from the profiles of 1,062 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 966 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 3 <1%
New Zealand 1 <1%
Russia 1 <1%
Germany 1 <1%
Unknown 960 99%

Demographic breakdown

Readers by professional status Count As %
Student > Master 221 23%
Student > Bachelor 208 22%
Researcher 66 7%
Student > Ph. D. Student 63 7%
Other 61 6%
Other 161 17%
Unknown 186 19%
Readers by discipline Count As %
Sports and Recreations 276 29%
Nursing and Health Professions 151 16%
Medicine and Dentistry 121 13%
Agricultural and Biological Sciences 72 7%
Biochemistry, Genetics and Molecular Biology 66 7%
Other 67 7%
Unknown 213 22%

Attention Score in Context

This research output has an Altmetric Attention Score of 970. 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 24 September 2021.
All research outputs
#9,868
of 18,953,852 outputs
Outputs from Journal of Physiology
#3
of 8,441 outputs
Outputs of similar age
#291
of 402,411 outputs
Outputs of similar age from Journal of Physiology
#1
of 137 outputs
Altmetric has tracked 18,953,852 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 8,441 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.6. This one has done particularly well, scoring higher than 99% 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 402,411 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 137 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.