PubHawk
October 2019 PMID 31033901

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners.

David M Shaw, Fabrice Merien, Andrea Braakhuis, E D Maunder, Deborah K Dulson

Full text PDF Download social card

Mentions

46
Peak: 13 in Apr 2019
across 5 sources since Apr 2019

Extended reach

595,414
potential audience

Total likes

2,103

Video views

68,573

Mentions per month

Apr 2019 – Mar 2024

Where it's discussed

  • X / Twitter32 posts
  • News6 articles
  • Facebook4 posts
  • YouTube2 videos
  • Reddit2 posts

AI synopsis

What people are saying

Several discussions emphasize the study's findings that a ketogenic diet may impair exercise efficiency at higher intensities, using words like 'detrimental' and 'limitations' to convey critical engagement. The tone varies from analytical to skeptical, with some users highlighting the consistency with prior research and others questioning its implications for athletic performance, reflecting a mix of curiosity and cautious evaluation.

AgreementNeither agree nor disagree

The discussions display mixed opinions; some posts acknowledge that the study suggests keto diets may impair high-intensity exercise efficiency, while others express skepticism or note that further analysis is needed.

InterestHigh interest

There is high interest, as posts reference specific studies, mention VO2max levels, and discuss implications for endurance and exercise performance, indicating active engagement with the research topic.

EngagementModerate engagement

Posts show some depth, with users quoting study results, referencing other experts, and commenting on methodology, though some responses are more casual or surface-level.

ImpactNeutral impact

The overall perception is that the publication has moderate impact; many consider it relevant but also highlight that it aligns with existing doubts about keto and athletic performance.

Abstract in brief

  • The study found that a 31-day ketogenic diet (KD) did not significantly affect overall endurance capacity in trained runners, but it did impair exercise efficiency at 70% VO2max, leading to increased energy expenditure and oxygen use.
  • Exercise efficiency remained stable at 60% VO2max during the KD, and endurance time to exhaustion was similar before and after the diet, indicating submaximal performance was preserved.
  • While the ketogenic diet helped maintain submaximal exercise capacity without needing carbohydrate supplementation, it also posed a higher risk of individual endurance decline due to changes in respiratory exchange ratio and energy utilization.
Read the full abstract

Top posts

Most liked on X and Bluesky
Dave Hughes
@HughesDC_Muscle · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/TIhLYCMe4v

Apr 29, 2019 · 32 likes · 5 shares · 11,022 followers View post →
DoctorTro
@DoctorTro · X

Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 27 likes · 6 shares · 161,012 followers View post →
Philip Prins, PhD
@PhilipPrins11 · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners. https://t.co/oHXiCpTimq ⁦@ProfTimNoakes⁩

May 1, 2019 · 5 likes · 1 share · 904 followers View post →
JulioBasulto_DN
@JulioBasulto_DN · X

En un estudio realizado con 8 atletas varones de resistencia entrenados, la dieta cetogénica se asoció a una disminución en la resistencia. https://t.co/qxOR1pk1XY David M Shaw, et al. Med Sci Sports Exerc. 2019 Oct;51(10):2135-2146.

Jun 4, 2020 · 3 likes · 96,237 followers View post →
Nanci Guest PhD, RD, CSCS
@NanciGuestRDPhD · X

@Veganella_ @NutritionMadeS3 @kevinnbass @Plant_proof @BioLayne ~6 keto vs carb search pubmed @LouiseMBurke https://t.co/lOw4945wSv https://t.co/MCzILjUho0 https://t.co/bhLPm8SNHb Not many on whole dietary patterns but certainly lots of interventions with diff doses/sources of carbs, protein (plant vs animal), & omega-3s I can look later!

Apr 5, 2021 · 3 likes · 1 share · 10,510 followers View post →
J P Fanton
@HealthyFellow · X

Effect of a #Ketogenic #Diet on Submaximal #Exercise Capacity and Efficiency in #Runners Attn: ⁦@DominicDAgosti2⁩ ⁦@KetoConnect⁩ ⁦@LowCarbRD⁩ #food #health #ketosis #nutrition https://t.co/GImEz4gaj9

Apr 30, 2019 · 2 likes · 1 share · 26,022 followers View post →

All mentions

Nanci Guest PhD, RD, CSCS
@NanciGuestRDPhD · X

@Veganella_ @NutritionMadeS3 @kevinnbass @Plant_proof @BioLayne ~6 keto vs carb search pubmed @LouiseMBurke https://t.co/lOw4945wSv https://t.co/MCzILjUho0 https://t.co/bhLPm8SNHb Not many on whole dietary patterns but certainly lots of interventions with diff doses/sources of carbs, protein (plant vs animal), & omega-3s I can look later!

Apr 5, 2021 · 3 likes · 1 share · 10,510 followers View post →
Sebastijan Orlic
@SebastijanOrlic · X

@TBogovac Ako smo sa opterećenjem na VO2max <60% (ultra endurance, lower intensity) utjecaj keta je isti kao i sa uravnoteženom prehranom, ne kompromitira performanse, ali ih ni ne poboljšava. Na 70+% performanse padaju dramatično. https://t.co/RfLq9eabQp

Mar 24, 2021 · 1,668 followers View post →
JulioBasulto_DN
@JulioBasulto_DN · X

En un estudio realizado con 8 atletas varones de resistencia entrenados, la dieta cetogénica se asoció a una disminución en la resistencia. https://t.co/qxOR1pk1XY David M Shaw, et al. Med Sci Sports Exerc. 2019 Oct;51(10):2135-2146.

Jun 4, 2020 · 3 likes · 96,237 followers View post →
Jae Rosario
@thoughtsbyjae_ · X

@DoctorTro 20. https://t.co/PM2kbt2i0a 21. https://t.co/JCiiItrKni 22. https://t.co/2MW5YNqt1v 23. https://t.co/4wlumPF12i 24. https://t.co/DMkjB1iqVT 25. https://t.co/j6w6kXJqxP 26. https://t.co/QWvRjzbN7S I got more but from looking through your studies it seems keto isn’t superior.

May 15, 2020 · 2,098 followers View post →
Science Alerts
@Science_Alerts · X

RT @EurekaMag: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/2Kwpn8W9fg

Nov 23, 2019 · 2 shares · 1,240 followers View post →
POPLINE
@POPLINE_org · X

RT @EurekaMag: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/2Kwpn8W9fg

Nov 23, 2019 · 2 shares · 5,269 followers View post →
EurekaMag
@EurekaMag · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/2Kwpn8W9fg

Nov 23, 2019 · 2 shares · 6,474 followers View post →
Pooja
@pm_girl · X

#Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/3PGVrwy5RN #science

Sep 27, 2019 · 2,069 followers View post →
the paper link
@the_paper_link · X

[trend] up+1: *Shaw DM* et al (Med Sci Sports Exerc) **Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners.** https://t.co/r4VJSaxypu

May 10, 2019 · 136 followers View post →
the paper link
@the_paper_link · X

[trend] up+1: *Shaw DM* et al (Med Sci Sports Exerc) **Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners.** https://t.co/r4VJSaP9h2

May 10, 2019 · 136 followers View post →
Joaquín San José
@jsanjosea · X

RT @nick_krontiris: A ketogenic diet may impair exercise efficiency particularly at >70 % VO2max https://t.co/oCFcpDtXDP #nutrition #spor…

May 7, 2019 · 1 share · 410 followers View post →
Nick Krontiris
@nick_krontiris · X

A ketogenic diet may impair exercise efficiency particularly at >70 % VO2max https://t.co/oCFcpDtXDP #nutrition #sports #cardio #hiit #exercise #fitness #fit #FitFam #FitLife #FitnessAddict #Workout #TrainHard #GymLife #GymTime #muscle #strength #lift #GetStrong #hypertrophy

May 5, 2019 · 1 like · 1 share · 19,000 followers View post →
the paper link
@the_paper_link · X

[trend] up+33: *Shaw DM* et al (Med Sci Sports Exerc) **Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners.** https://t.co/r4VJSaxypu

May 4, 2019 · 136 followers View post →
running osteo
@RunningOsteo · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners. - PubMed - NCBI https://t.co/3D2GNLRkJB

May 3, 2019 · 243 followers View post →
Delilah L. Veronese
@DelilahVeronese · X

@HealthyFellow: Effect of a #Ketogenic #Diet on Submaximal #Exercise Capacity and Efficiency in #Runners Attn: ⁦@DominicDAgosti2⁩ ⁦@KetoConnect⁩ ⁦@LowCarbRD⁩ #food #health #ketosis #nutrition https://t.co/wwlfKKeOzs

May 3, 2019 · 2 likes · 3,640 followers View post →
Tim Noakes
@ProfTimNoakes · X

RT @PhilipPrins11: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners. https://t.co/oHXiCpTimq ⁦@ProfTimN…

May 2, 2019 · 1 share · 158,503 followers View post →
the paper link
@the_paper_link · X

[trend] new: *Shaw DM* et al (Med Sci Sports Exerc) **Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners.** https://t.co/r4VJSaxypu

May 2, 2019 · 136 followers View post →
Philip Prins, PhD
@PhilipPrins11 · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners. https://t.co/oHXiCpTimq ⁦@ProfTimNoakes⁩

May 1, 2019 · 5 likes · 1 share · 904 followers View post →
DesignedByNature
@DesignedNature · X

I just posted "Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners - April 2019" on Reddit https://t.co/qUENuUtMDV

May 1, 2019 · 441 followers View post →
Best Health 4 You
@besthealthyou · X

RT @HealthyFellow: Effect of a #Ketogenic #Diet on Submaximal #Exercise Capacity and Efficiency in #Runners Attn: ⁦@DominicDAgosti2⁩ ⁦@Keto…

Apr 30, 2019 · 1 share · 520 followers View post →
J P Fanton
@HealthyFellow · X

Effect of a #Ketogenic #Diet on Submaximal #Exercise Capacity and Efficiency in #Runners Attn: ⁦@DominicDAgosti2⁩ ⁦@KetoConnect⁩ ⁦@LowCarbRD⁩ #food #health #ketosis #nutrition https://t.co/GImEz4gaj9

Apr 30, 2019 · 2 likes · 1 share · 26,022 followers View post →
Travis Statham
@Travis_Statham · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 12,718 followers View post →
Jorge Riquelme
@RiquelmeJorge · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 846 followers View post →
Don Donahoe
@deldondo · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 315 followers View post →
besenberg
@besenberg · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 3,439 followers View post →
Theo Sloot
@TheoSl93 · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 184 followers View post →
Villain Support / Chris Wolf UGC
@wolfmediagvl · X

RT @DoctorTro: Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 6 shares · 630 followers View post →
DoctorTro
@DoctorTro · X

Yes, you can exercise without carbs & not much will change

Apr 30, 2019 · 27 likes · 6 shares · 161,012 followers View post →
Claudio Marcos
@equisdobley · X

RT @HughesDC_Muscle: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/TIhLYCMe4v

Apr 30, 2019 · 5 shares · 12 followers View post →
Vicente Torres
@TorresPirri · X

RT @HughesDC_Muscle: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/TIhLYCMe4v

Apr 29, 2019 · 5 shares · 655 followers View post →
Łukasz Czerw
@UCzerw · X

RT @HughesDC_Muscle: Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/TIhLYCMe4v

Apr 29, 2019 · 5 shares · 67 followers View post →
Dave Hughes
@HughesDC_Muscle · X

Effect of a Ketogenic Diet on Submaximal Exercise Capacity and Efficiency in Runners https://t.co/TIhLYCMe4v

Apr 29, 2019 · 32 likes · 5 shares · 11,022 followers View post →