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Related Experiment Videos

Runners' diarrhea. Different patterns and associated factors.

S N Sullivan1, C Wong

  • 1GI Unit, Victoria Hospital, London, Ontario, Canada.

Journal of Clinical Gastroenterology
|March 1, 1992
PubMed
Summary
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Many distance runners experience bowel issues, including fecal incontinence and diarrhea, impacting training and competition. These "runners

Area of Science:

  • Sports Medicine
  • Gastroenterology
  • Exercise Physiology

Background:

  • Gastrointestinal (GI) distress is common in athletes.
  • Understanding the prevalence and triggers of GI issues in runners is crucial for performance and well-being.

Purpose of the Study:

  • To investigate the prevalence of various bowel function disturbances in distance runners.
  • To identify potential correlations between specific running-induced GI symptoms and other health factors.

Main Methods:

  • A questionnaire survey was administered to 109 distance runners.
  • The survey assessed bowel habits, including incontinence, defecation during exercise, pre- and post-exercise diarrhea, and associated symptoms.

Main Results:

Related Experiment Videos

  • 12% reported fecal incontinence during running; 62% stopped to defecate during training.
  • 43% experienced pre-competition diarrhea; 47% reported post-race diarrhea, sometimes with blood (16%).
  • Pre-competition diarrhea linked to milk intolerance and non-exercise bowel irregularities; post-race diarrhea associated with cramps, nausea, and vomiting.

    • Conclusions:

    • "Runners' diarrhea" is prevalent and multifactorial, affecting a significant portion of distance runners.
    • Symptoms like pre-competition diarrhea may indicate underlying GI sensitivities (e.g., irritable bowel syndrome, lactose intolerance).
    • Post-race diarrhea with severe symptoms warrants further investigation for potential gastrointestinal distress.