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Related Experiment Videos

Exercise and tumor development in a mouse predisposed to multiple intestinal adenomas.

L H Colbert1, J M Davis, D A Essig

  • 1Department of Exercise Science, School of Public Health, University of South Carolina, Columbia 29208, USA.

Medicine and Science in Sports and Exercise
|October 20, 2000
PubMed
Summary

This study found that seven weeks of exercise training did not significantly alter intestinal polyp development in Min mice. Further research is needed to explore potential sex differences and training variations in colon cancer prevention.

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Area of Science:

  • Oncology
  • Exercise Physiology
  • Gastroenterology

Background:

  • Epidemiological studies indicate physical activity may reduce colon cancer risk.
  • Mechanisms underlying this protective effect are not well understood.
  • Appropriate experimental models are scarce for studying exercise and colon cancer.

Purpose of the Study:

  • To investigate the impact of exercise training on polyp development.
  • Utilized the multiple intestinal neoplasia (Min mouse) model, which is predisposed to intestinal tumors.

Main Methods:

  • Male and female Min mice (3 weeks old) were assigned to control or exercise groups.
  • Exercise group underwent treadmill training for 7 weeks (4-10 weeks of age).
  • Intestines were analyzed for polyps at 10 weeks of age.

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Main Results:

  • Exercise training increased skeletal muscle oxidative capacity (citrate synthase activity).
  • No significant effect of exercise on polyp development in combined sexes.
  • A non-significant trend for fewer colon and total polyps was observed in exercising males.

Conclusions:

  • Seven weeks of exercise training did not significantly affect intestinal polyp development in Min mice.
  • Further investigation is warranted to determine if sex differences exist.
  • Variations in exercise protocols may influence tumor outcomes.