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Cited by 65Gastrointestinal motility and disordersCardiovascular and exercise physiologyPelvic floor disorders treatments

Effect of heavy exercise on gastrointestinal transit in endurance athletes

Strid, Hans, Simrén, Magnus, Störsrud, Stine, Stotzer, Per-Ove, Sadik, Riadh·2011·Scandinavian Journal of Gastroenterology
DOI 10.3109/00365521.2011.558110
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Abstract

BACKGROUND AND AIMS: Disturbances in transit of the gastrointestinal (GI) tract have been proposed to be involved in the etiology of the GI symptoms in heavy exercise. However, the results are conflicting. In the present study, we investigated the effect of heavy exercise on GI transit in well-trained athletes. METHODS: Fifteen healthy well-trained athletes underwent measurement of gastric emptying, small bowel transit and colonic transit with radiopaque markers during a resting week and during a week with heavy training. GI symptoms, bowel habits, food intake and exercise performed were registered. RESULTS: Small bowel transit was accelerated during the training period compared with the resting period (3.7 (2.6-12.3) h vs. 6.9 (4.2-17.2) h, p = 0.04). Segmental colonic transit in the descending colon was significantly accelerated during exercise compared with rest (0.1 (0-0.4) h vs. 0.4 (0.1-0.7) h, p = 0.03). Gastric emptying did not change during exercise compared with resting (2.4 (0.7-4.6) h vs. 1.8 (0.9-3.3) h, p = 0.16). Stool frequency increased significantly during the week with heavy exercise compared with the week without training (1.5 (1.2-1.8) stools/day vs. 1.3 (1.0-1.7) stools/day, p = 0.02). Stool consistency according to Bristol Stool Form Scale tended to be looser during the training period compared with the resting period (4.2 (3.7-4.5) vs. 3.9 (3.0-4.3), p = 0.08). CONCLUSION: Heavy exercise affects transit in the GI tract, which might be involved in the generation of GI symptoms and altered stool frequency/consistency in endurance athletes.

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  • Repeated bouts of aerobic exercise can increase GI transit time in healthy individuals and middle-aged patients with chronic constipation.

    “Repeated bouts of aerobic exercise can increase GI transit time in healthy individuals and middle-aged patients with chronic constipation [118–120].”

    From The athletic gut microbiota (2020) · cites this paper as [118]

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Authors
Strid, H., Simrén, M., Störsrud, S., Stotzer, P.-O., & Sadik, R.
Affiliations
University of Gothenburg (SE)
Corresponding author
Strid, Hans
ORCID
Venue
Scandinavian Journal of Gastroenterology
Publisher
Informa UK Limited
Published
2011-03-02
Volume
46
Issue
6
Pages
673-677
ISSN
  • 0036-5521 (ISSN-L)
  • 1502-7708
DOI
10.3109/00365521.2011.558110
OpenAlex
W2070617515
Cited by
65
References
26
Citations by year
2026: 2 · 2025: 2 · 2024: 7 · 2023: 7 · 2022: 8 · 2021: 7 · 2020: 6 · 2019: 7 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 2 · 2013: 4 · 2012: 2
FWCI
2.62
Type
journal article
Language
en
Open access
closed
Locations
  • Scandinavian Journal of Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Vetenskapsrådet
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rheumatology › Pelvic floor disorders treatments
Keywords
gastrointestinal transit, heavy exercise, endurance athletes, gastric emptying, small intestinal transit, colonic transit, stool frequency, stool consistency, exercise-induced gastrointestinal symptoms, well-trained athletes
MeSH terms
Adult, Eating, Feces, Female, Gastric Emptying, Gastrointestinal Transit, Humans, Male, Rest, Exercise, Young Adult, Athletes

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