Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvements in endurance exercise economy and exercise performance. Full breakdown: https://t.co/uKCC36gSqo Study by @LouiseMBurke: https://t.co/cdoXazYo4U #keto https://t.co/BOW9ADCHbs
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers.
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Nov 2017 – Nov 2025Where it's discussed
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What people are saying
Several discussions reference the study, emphasizing how LCHF diets can harm performance in elite athletes, with one participant noting, "the LCHF group failed to improve their 10k time-trial performance after training." The tone fluctuates between supportive and critical, as some posts underscore the validity of traditional high-carb diets for endurance sports, using expressions like "time-tested performance enhancer," which reinforces the impact of the research.
Many discussions support the study's findings, indicating a consensus that LCHF diets may not provide a performance advantage for elite race walkers.
There's evident enthusiasm and curiosity surrounding the subject of diet and athletic performance, with participants eager to share and reference additional studies.
While some discussions are quite engaged, referencing specific research and results, others seem to lack depth, suggesting mixed levels of engagement.
The implications of the study are considered significant, as multiple posts highlight its potential effects on athletic training and nutrition.
Abstract in brief
- The study examines how a low carbohydrate high fat (LCHF) diet affects elite race walkers during a period of intensified training.
- While the LCHF diet enhances fat oxidation and peak aerobic capacity, it negatively impacts exercise economy, causing increased oxygen demand at race speeds.
- Overall, despite adaptations from the diet, performance in elite endurance athletes declines when compared to those on high carbohydrate diets during similar training regimens.
Top posts
Most liked on X and BlueskyCasi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos otorgan menos glucógeno muscular, lo que afecta al rendimiento. Si se entrena a alta intensidad, no tiene mucho sentido limitar carbos. https://t.co/Fc0ezI92pS
Our latest from Supernova https://t.co/q2rBcWDHlE. Very pleased to be able to replicate the methodology of our original investigation https://t.co/dVV9lfKv5K (with a couple of additions), and produce this paper with a wonderful group of women. https://t.co/JNPxvV12Y4
2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the greater oxygen cost to produce speed with fat fuel. Results were intriguing but deserved replication challenge https://t.co/BbdNV5J6ph.
A ketogenic diet impairs performance in ELITE race walkers: https://t.co/XinSLlN140 https://t.co/zl2cv2YXo0 https://t.co/DHAgNHqG5n https://t.co/FcDsEzcftr
Chronic adaptation to a #keto diet ❌impaired exercise economy &
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Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers https://t.co/haSyTUyZDz
@gfj1979 @JoseAntonioPhD https://t.co/7zYGWDPFd7 https://t.co/uVqgdmrKf4 https://t.co/4fo2Jud9Kh https://t.co/ibYlbVUfe3 There is no advantage to keto - unless you PREFER it - & in some cases, it hurts performance. And this is just the tip of the iceberg. High carb is a time-tested performance enhancer.
@StevenQuartz His post is reasonable because of all the disclaimers at the end, at least in my opinion. Here's a good study that shows even in a sport much we think of being much less dependent on carbohydrates as a marathon (race-walking) CHO still really matters. https://t.co/VeZpiTL906
1: A super fun (and very heated) class debate: can you "outrun" a bad diet? Thankful to have remembered this paper from @sweatscience's ENDURE to use in my argument. @LouiseMBurke https://t.co/WOQLyjjn8J
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified train… https://t.co/40jrPUsKj4
@bakrantz @christopher_erc @NutritionSciGuy And here is a pretty thorough debunking of literally all of that https://t.co/SbX6korgzj https://t.co/Yi4xxxzpze https://t.co/liaoqrkgYu https://t.co/oH8KcoN7lf https://t.co/pqIB3aNHEm https://t.co/lxCYodD3C7 https://t.co/aeYiETiYwd https://t.co/dRY1i0WRyo
RT @FoodFirst_Ty: @DoctorTro Do athletes perform better with carbs? The answer is yes. https://t.co/liaoqrkgYu https://t.co/oH8KcoN7lf h…
@DoctorTro Do athletes perform better with carbs? The answer is yes. https://t.co/liaoqrkgYu https://t.co/oH8KcoN7lf https://t.co/pqIB3aNHEm https://t.co/aeYiETiYwd https://t.co/dRY1i0WRyo https://t.co/pqIB3aNHEm
@carniyogi @SteAssent @Spoonz1311 @SentientBlobBob LMFAO. This literally shows that your method is inferior. Cope, clown. https://t.co/l1oq6bfrfw https://t.co/v58fhjStDN
@aCarnivoreDiet @stuskl He does not care about studies https://t.co/NV2Olt30w5 https://t.co/MAHYDP4rfE https://t.co/TWqsa6eKqN https://t.co/i3rOcKuQFv https://t.co/KDubogkHEB
“Adaptation to LCHF diet negated performance benefits in elite endurance athletes, in part due to reduced exercise economy. https://t.co/VNittPfrjx https://t.co/wRCo0hdfYR
@AndyRenfree It's not a surprise because the results of this study were originally published back in 2016 https://t.co/1aeawb6TT7
RT @ToshiyukiHorie: ”Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training…
RT @ToshiyukiHorie: ”Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training…
RT @ToshiyukiHorie: ”Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training…
”Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers” マラソンよりも長距離の競歩においても炭水化物中心の代謝の方が有利であることが判明。 https://t.co/nm1KJKEprh
@StopTNWO @LoreofRunning1 @KingManninen @muddyvee @DoctorTro https://t.co/F7e7XCRUZD https://t.co/wdazWiMRo8
https://t.co/F7e7XCRUZD Here is the data, robust and on elite athletes 2 of them world champions. Increase in fat oxidation was negotiated by the increase in oxygen cost and therefore a reduction in exercise economy meaning…… worse performance. https://t.co/9X20ekE9Vi
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers CC:@MountainRoche https://t.co/9BQzf78Mez
In conclusion, a ketogenic diet during intense training increases fat oxidation, but hampers training-induced improvements in endurance exercise economy and performance. Study: https://t.co/PwhXcnIAFC Please help promote the first tweet of the thread: https://t.co/FVg7hmoh0x
@kfjd_ 俺が聞いたのはこのスタディーだ。https://t.co/wMHIpnVAIB
RT @BioLayne: A ketogenic diet impairs performance in ELITE race walkers: https://t.co/XinSLlN140 https://t.co/zl2cv2YXo0 https://t.co/DHA…
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers - PubMed https://t.co/bH8IxZMlM2
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
RT @Dani_trainer_: Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos…
Casi todo entrenamiento que hacemos es anaeróbico, tipo de energía que requiere glucosa. Dietas bajas en carbohidratos otorgan menos glucógeno muscular, lo que afecta al rendimiento. Si se entrena a alta intensidad, no tiene mucho sentido limitar carbos. https://t.co/Fc0ezI92pS
References for those who are interested: https://t.co/iokjF90GCc https://t.co/Bx0kODzSIv https://t.co/HePtMtt9qg https://t.co/WioRJvONDz https://t.co/U7JP7s9fVQ
@pjungar A ketogenic diet impairs performance in elite race walkers: https://t.co/krxOKj8Q1c https://t.co/YeL6Jq7F3b https://t.co/RoV8AAtTK4
RT @BioLayne: A ketogenic diet impairs performance in ELITE race walkers: https://t.co/XinSLlN140 https://t.co/zl2cv2YXo0 https://t.co/DHA…
RT @BioLayne: A ketogenic diet impairs performance in ELITE race walkers: https://t.co/XinSLlN140 https://t.co/zl2cv2YXo0 https://t.co/DHA…
A ketogenic diet impairs performance in ELITE race walkers: https://t.co/XinSLlN140 https://t.co/zl2cv2YXo0 https://t.co/DHAgNHqG5n https://t.co/FcDsEzcftr
Burke et al. (2016): https://t.co/37AvDYWRzy Investigated effects of a 3-week period of intensified training paired w/ LCHF diet - Elevated rates of fat oxidation during exercise at 80% of VO2 peak - LCHF group failed to improve their 10k time-trial performance after training
This study explains that a high fat, low carbohydrate diet impairs exercise economy. #TWU_KNS422_S21 @MrDoug_Gregory https://t.co/JDlJuAreBm
@fancypirate8 I don’t like Gregor at all either but there is a rather large body of evidence regarding keto and athletic performance. https://t.co/liaoqr27Km https://t.co/lxCYodU6E7 https://t.co/dRY1i1dUAo https://t.co/aeYiETA1yd
Les recomiendo leer, doi:10.1113/JP273230
競歩選手を対象にした研究。ケトダイエット(糖質制限食)は脂質利用率を高めたけど、パフォーマンスは他の食事(高糖質食、部分的糖質制限食)と比較すると上がらなかったと。 糖質制限がアスリートのパフォーマンスに寄与するかは今のところビミョー(否定的)そう。 https://t.co/l0TQPaP55n
@sweatscience @outsidemagazine @LouiseMBurke See the original open-access papers here: Supernova 1: https://t.co/wJ1Q8GSDk2 Supernova 2: https://t.co/D3yPnrfeqr
@ChronicPainCave @BlueSpotScience @JPhysiol @ACUmedia @MacKillopACU Hi Greg, Our group previously looked at periodized CHO intake where some sessions were done with low CHO availability. While this wasn’t keto - they showed similar improvements to a traditional high CHO group (~6% faster), while the LCHF was ~2% slower https://t.co/wJ1Q8GSDk2
RT @LindyFit: Never go against Lindy Eat your carbs https://t.co/P4OccYdI5j https://t.co/UtBMKrfTLT
Never go against Lindy Eat your carbs https://t.co/P4OccYdI5j https://t.co/UtBMKrfTLT
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
RT @JornTrommelen: Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvem…
Ketogenic diet impairs exercise performance? A ketogenic diet during intense training hampers training-induced improvements in endurance exercise economy and exercise performance. Full breakdown: https://t.co/uKCC36gSqo Study by @LouiseMBurke: https://t.co/cdoXazYo4U #keto https://t.co/BOW9ADCHbs
RT @LouiseMBurke: 2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the grea…
RT @jwhitfie: The latest #Supernova study from @LouiseMBurke et al at @theAIS #LCHF diet impairs exercise economy and performance in elit…
Our latest from Supernova https://t.co/q2rBcWDHlE. Very pleased to be able to replicate the methodology of our original investigation https://t.co/dVV9lfKv5K (with a couple of additions), and produce this paper with a wonderful group of women. https://t.co/JNPxvV12Y4
RT @jwhitfie: The latest #Supernova study from @LouiseMBurke et al at @theAIS #LCHF diet impairs exercise economy and performance in elit…
RT @LouiseMBurke: 2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the grea…
RT @LouiseMBurke: 2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the grea…
The latest #Supernova study from @LouiseMBurke et al at @theAIS #LCHF diet impairs exercise economy and performance in elite race walkers https://t.co/D3yPnrfeqr Replicates the findings of earlier study in @JPhysiol https://t.co/vdr15b5wr1 https://t.co/Lv3mR0ZZUA
RT @LouiseMBurke: 2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the grea…
2. SN1 found LCHF massively increases muscle fat use, but impairs high intensity performance. Possibly linked to the greater oxygen cost to produce speed with fat fuel. Results were intriguing but deserved replication challenge https://t.co/BbdNV5J6ph.
RT @yasu0804: 糖質制限食では、さまざまな運動強度でアスリートの運動中の全身脂肪酸化率を著しく高める。 結果として酸素の需要が高まり、運動経済を損ない、持久力トレーニングのパフォーマンスの利点を無効にした。 https://t.co/ksNVvoMExc
糖質制限食では、さまざまな運動強度でアスリートの運動中の全身脂肪酸化率を著しく高める。 結果として酸素の需要が高まり、運動経済を損ない、持久力トレーニングのパフォーマンスの利点を無効にした。 https://t.co/ksNVvoMExc
@kiki275 @ScottRobinson8 @OJCS_92 Hi, In terms of exercise fasted vs fed, this study was done in lean men: https://t.co/nhtRWLhj8s In terms of one in elite athletes, this one by @LouiseMBurke is a gem: https://t.co/xUycZmHfBQ but note its a different model of carbohydrate periodisation to breakfast timing
@AndrewCreer https://t.co/iKue8gaoay (Supernova 1, thanks again @TStellingwerff), 25 km standardised long walk: Low carb group: - @ 79% VO2peak - RER 0.76 -> 80% fat, 20% CHO High carb group: - @ 74% VO2peak - RER 0.91 -> 30% fat, 70 % CHO. Numbers rounded by me, so might be slightly off.
RT @cashford_: Work by @LouiseMBurke, @JohnAHawley and colleagues showed that a low-carb, high fat diet impaired exercise economy and perfo…
Work by @LouiseMBurke, @JohnAHawley and colleagues showed that a low-carb, high fat diet impaired exercise economy and performance in elite, Olympic level race walkers #Coaches20 https://t.co/U3Vt98yzWV
RT @lewiskd100: Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in e…
There is nothing quite like reading research with such integrity, rigour and passion @LouiseMBurke Et al Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers https://t.co/HU9k8OAeSs
@DrSharkeyDC @Nicholifts @elvis_cole @GPPartner Research shows Keto diets "negate the performance benefit from intensified training in elite race walkers" (Doi: 10.1113/JP273230) Fortunately hardly anyone makes it past 3 years on keto diets (making a vegan diet look very easy indeed!): Doi/full/10.1111/j.0013-9580.2004.10004.x https://t.co/Sd58DdHysG
RT @MiniMissFran: Study showed that high/periodised CHO diets improved performance in elite race walkers LCHF diets showed increased capaci…
RT @natashaeddy99: Study shows that performance improved by training and competing and consuming diets with High Carb availability but not…
RT @MiniMissFran: Study showed that high/periodised CHO diets improved performance in elite race walkers LCHF diets showed increased capaci…
RT @ImogenWhite12: Having a high carb diet (to provide a high or periodised carb availability) is positively related to improved performanc…
RT @chrissu05708664: Study shows that keto low-CHO high fat diet increases capacity for fat ox during ints-ex but impairs performance in lo…
Study showed that high/periodised CHO diets improved performance in elite race walkers LCHF diets showed increased capacity for fat oxidation during intense exercise, but impaired energy economy, would LCHF diets be more effective short term? #DSES3211 https://t.co/RgIWKT1sLo
RT @natashaeddy99: Study shows that performance improved by training and competing and consuming diets with High Carb availability but not…
RT @chrissu05708664: Study shows that keto low-CHO high fat diet increases capacity for fat ox during ints-ex but impairs performance in lo…
Having a high carb diet (to provide a high or periodised carb availability) is positively related to improved performance in race walking. Only males were used, is this generalisable to women too? #DSES3211 https://t.co/Byal8yi4J1
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers - Burke - 2017 - The Journal of Physiology - Wiley Online Library https://t.co/4iv32muAzw
RT @natashaeddy99: Study shows that performance improved by training and competing and consuming diets with High Carb availability but not…
RT @natashaeddy99: Study shows that performance improved by training and competing and consuming diets with High Carb availability but not…
RT @chrissu05708664: Study shows that keto low-CHO high fat diet increases capacity for fat ox during ints-ex but impairs performance in lo…
Study shows that keto low-CHO high fat diet increases capacity for fat ox during ints-ex but impairs performance in long term. Would short term use be appropriate in run up to comp? #DSES3211 https://t.co/D7fBKZApe1
Study shows that keto low-CHO high fat diet increases capacity for fat ox during ints-ex but impairs performance in long term. Would short term use be appropriate in run up to comp? https://t.co/D7fBKZApe1
Study shows that performance improved by training and competing and consuming diets with High Carb availability but not LCHF. If the distance of the test was longer would the results be the same? https://t.co/Tcc8R0JHGq #DSES3211
RT @lewiskd100: Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in e…
Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers https://t.co/xd0HzIN0ob
@aga_pallavi @mistrysamvid @MarikaSboros @dlifein Not scary... I was just responding to a possible reason docs aren't recommending it. There are a significant number that highlight issues or show no benefit. https://t.co/9YyPh9qu7Y
RT @Wendi_Irlbeck: Chronic adaptation to a #keto diet ❌impaired exercise economy &
Chronic adaptation to a #keto diet ❌impaired exercise economy &
@elmo_desto @LouiseMBurke Hey, I think it’s this one you are after https://t.co/kc879KVpMR looking at three regimes on performance.
@SimBinette https://t.co/03A4xIE7en