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November 18, 2017
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  • Sean

    This really is a great article, thanks Alan and CT.

    • Thanks Sean. We always love having Alan write for us!

  • Simon Wile

    Do some audax rides and youll be trained to eat anything and keep riding all day ;)

  • It’s worth noting that perturbation of the gut can have some pretty profound ramifications for general health, that’s why any chronic gut issues deserve to be addressed. Our understanding of the influence of high-intensity exercise and endurance efforts on the microbiota that populate the gut is lacking, however the influence of the gut environment on the immune system is clear, so it’s not a great leap to imagine that there might be a connection. If nothing else, a period of malabsorption is going to have an effect on recovery, which in turn, may compromise the athlete’s immune responses.

  • Bruce Gray

    This is a great article, on a subject that has not had the attention it should have for several decades.
    Another researcher Dutchman Kim Van Wijck has done a lot of excellent work in this field too. This paper is well worth a read for any serious endurance athlete.

    Physiology and pathophysiology of splanchnic hypoperfusion and intestinal injury during exercise: strategies for evaluation and prevention

    I have been working for the last 2 years in the US with an integrative health facility, and my experiences there make me believe psychemotional stress induced splanchnic hypoperfusion is very likely a major contributing cause of the inflammatory gut diseases that are growing in incidence in Western civilizations – Crohn’s, Colitis, Celiac’s, IBD. Hypoperfusion has to be taken seriously as the first stage of a process that compromises the gut blood barrier, via a sequence of hypoperfusion, reduced enterocyte protective mucus production, reduced moisture availability for gut contents, increased mechanical friction against gut lumen, compromised bolus formation and peristaltic waves, repetitive lumen damage and inflammation, failure of tight junctions…..all culminating in leaky gut.

    I believe understanding this process will have further applications than endurance sport.

  • barongreenback

    This is a really great article. I have had part of my bowel removed after suffering from cancer and many of the things mentioned here have helped me train for longer rides as I’ve recovered over the past 2 years, without needing an urgent stop to ’empty’.

  • Steve S

    Awesome article…and topical for me as I’m laid up with stomach issues.

    Seriously people, look after your gut… follow advice and never ever train on a full stomach. I’ve had 1000 injuries and got over them all (or found a way to train around them) but stomach issues wipe you out for years.

  • Valiant Abello

    Fantastic article. Thank you Alan/CT

  • MattHurst

    Thankyou Alan and CT, a Great article, will apply these observations next ride.

  • Bob

    Excellent and timely article. I got the dreaded diarrhoea on the second to last stage of TOUR Transalp in Italy this year, as did a friend on another team. I was just able to finish but sadly he wasn’t. Conditions had been mostly cold and very wet and while I immediately blamed the hotel, he’s sure it was a Campylobacter infection from cow droppings on the road sprayed up onto our bottles. I do tend to be very sensitive to gut problems, and what I’ve just read here is really making sense.


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November 18, 2017
November 17, 2017
November 16, 2017