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Wednesday, 07 June 2017 18:52

Excessive Exercise May Damage the Gut Featured

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A review of published studies has found that people who exercise excessively may be prone to acute or chronic gut issues.

Investigators found that with increasing intensity and duration of exercise, there was a proportional increased risk of gut damage and impaired gut function. Specifically, the cells of the intestine are injured and the gut becomes more leaky, allowing pathogenic endotoxins normally present and isolated to the intestine to pass into the bloodstream. This scenario of 'exercise-induced gastrointestinal syndrome' may lead to acute or chronic health complications.

Exercise stress of ≥2 hours at 60% VO2max appeared to be the threshold whereby significant gut disturbances arise, irrespective of an individual’s fitness status. Running and exercising in hot ambient temperatures appear to exacerbate the gut disturbances.

The review also found that for patients who have irritable bowel syndrome or inflammatory bowel disease, low to moderate physical activity may be beneficial. The health implications of more strenuous exercise has not been researched, but is likely to be detrimental for such patients.

“Despite excessive exercise being confirmed to compromise gut integrity and function, we have identified several exacerbating factors which can be controlled, and several prevention and management strategies that can attenuate and abolish the damage and compromised function,” said Dr. Ricardo Costa, lead author of the Alimentary Pharmacology & Therapeutics review. “It is recommended that a full gut assessment during exercise should be undertaken by individuals with symptoms of gut disturbances during exercise, to ascertain what is causing the issue and to develop individually tailored management strategies.”

 



Source: Wiley
Full bibliographic information:
R. J. S. Costa, R. M. J. Snipe, C. M. Kitic and P. R. Gibson. Systematic review: exercise-induced gastrointestinal syndrome—implications for health and intestinal disease. Alimentary Pharmacology & Therapeutics.

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