Mateusz Gawełczyk, PhD

Performance nutritionist | Assistant @AWFKatowice | Nutritionist @PZBiath, @zaglebielubin | @iocdipspnut student | amateur cyclist | rice cake lover |

[Tom Coughlin @tecoughlin]

The effects of low carb / ketogenic diets on anaerobic performance in athletes 💥

This new meta-analysis compiled data from 13 studies (273 participants) to establish the effects of…

1️⃣ Low-carb diets (≤130 g/day)
2️⃣ Ketogenic diets (≤50 g/day or ≤10% total energy intake)

…on anaerobic performance (power output, repeat sprint ability) 💪

Here is what they found ⬇️

📊 Low carb and keto diets provided mixed results for peak power during single maximal efforts

🚨 Repeated high-intensity exercise was consistently impaired

(likely reflecting reduced muscle glycogen availability and limited glycolytic ATP production)

Further analysis revealed that…

💥 Anaerobic power output was maintained-to-slightly-improved

👟 Repeated sprint ability was modestly impaired

🩸 Blood lactate concentrations were greatly and consistently reduced

Carbohydrate restriction appears to either maintain or impair anaerobic performance in athletes ‼️

However, there were large discrepancies between studies in intervention lengths, performance measures etc 🤷‍♂️

So we can’t look too deeply into these findings just yet.

But if maximal power output is important, carbs are probably your best approach ✅

Reference:

https://t.co/2YN7glBGCn

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[adam plucinski @adam_plucinski]

Great 3 days in Menchester @sportexercise

[Polski Związek Zawodowy Dietetyków @pzzd_official]

#bezizbbezsensu #izbydladietetyka #debata #naszglosniejestodosobniony
Na zaproszenie @KObywatelska już jutro (23.05 godz. 16:30) odbędzie się debata posłów z dietetykami. Was też nie może tam zabraknąć @tvn24 @PolsatNewsPL @tvp_info @RadioZET_NEWS @Antyradiopl @RMF24pl i inni.

[Andrew Jagim, PhD @AJagim]

Fresh off the press! Thank you to all co-authors for helping to get this beast of an article to the finish line! International society of sports nutrition position stand: energy drinks and energy shots. #energydrinks #energyshots #caffeine https://t.co/AVy8VUgUcD

[Jorn Trommelen, PhD @JornTrommelen]

Our new paper:
Pre-sleep Protein Ingestion Increases Mitochondrial Protein Synthesis Rates During Overnight Recovery from Endurance Exercise: A Randomized Controlled Trial

Open access link:
https://t.co/IkXcLEztvX

A thread 🧵👇

#protein #casein #whey

[Javier Gonzalez @Gonzalez_JT]

Our paper on #ketones and EPO is now #openaccess
🔓

#performance #nutrition #cycling

[Mateusz Gawełczyk, PhD @GawelczykM]

Heard about it while ago. Can’t wait to test it! https://t.co/zOCWliwffg

[Dr. Scott Carlin @scottcarlinpt]

Time to re-think muscle cramping.

Marathon runners who suffered exercise-associated muscle cramps exhibited higher concentrations of muscle damage biomarkers (e.g. creatine kinase).

They didn’t display a greater degree of dehydration and electrolyte depletion.

[Mateusz Gawełczyk, PhD @GawelczykM]

@RafaMikoajczyk3 @inaki_delaparra Well done👏

[professormichaelgleeson @profmikegleeson]

Footballers should consume about 30 g of high GI carbs 5-10 minutes before kick-off. A nutritionist (for the pros) or coach (for amateurs) needs to tell them what to eat or drink to get that amount in easily digestible form. In my book Nutrition for Top Performance in Football

[Iñigo San Millán @doctorinigo]

And still so many out there selling the cool-aid of restricting CHO to improve mitochondrial biogenesis. There are so many athletic careers I have seen ruined with concepts like this...

[Trent Stellingwerff, PhD / CSEP-CEP / FACSM / ChPC @TStellingwerff]

For those that read sport science textbooks please read this (an email I just sent, now blinded) - as most times the content is developed off the backs of experts, who do it for free, and then give up copyright. The scientific publishing industry model has to change.

[Mateusz Gawełczyk, PhD @GawelczykM]

@StravaSupport I've just deactivated my account on strava by mistake. Is it possible to activate it again?

[Dr. Laurent Bannock @laurent_bannock]

LIVE clip of @23benjones lecture @issn_diploma on ‘undertaking & integrating research into practice’ #SportScience https://t.co/pKqM7q5rFh

[Wimbledon @Wimbledon]

After a 279-minute marathon, Kubot/Melo are the 2017 gentlemen's doubles champions - they beat Marach/Pavic 5-7, 7-5, 7-6(2), 3-6, 13-11.

[Mateusz Gawełczyk, PhD @GawelczykM]

Pierwszy posiłek regeneracyjny po 90 km jeździe 🚴🏼 20g najwyższej jakości białka w płynnej… https://t.co/2LMF8P1Y2w

[James Hull @Breathe_to_win]

'Sitting is the new smoking' in terms of risk for adverse cardiovascular outcome. Prof. Mai-Lis Hellénius. Gets audience moving. #ACSM17.

[YLMSportScience @YLMSportScience]

#New | 3-week Low Carbs, High Fat Diet ⬇️ Performance in World-Class Endurance Athletes 🍴🏃🏼 https://t.co/m9bXUTbBWg

[Prof Graeme L. Close @close_nutrition]

Brilliant quote from @JamesyMorton. Hopefully this dispels some myths about how endurance athletes win major events.

[Prof Graeme L. Close @close_nutrition]

10 nonsenses that have creaped into sport. I'll start off, complete pls

1. IGg allergy tests
2. CK to quantify damage
3. Carbs make you fat