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Exercise increases solid meal gastric emptying rates in men.

J G Moore1, F L Datz, P E Christian

  • 1University of Utah, Division of Nuclear Medicine, Salt Lake City.

Digestive Diseases and Sciences
|April 1, 1990
PubMed
Summary
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Exercise significantly speeds up gastric emptying of solid meals. Walking at 6.4 km/hr emptied meals twice as fast as resting, highlighting exercise intensity as a key factor.

Area of Science:

  • Physiology
  • Gastroenterology

Background:

  • Gastric emptying influences nutrient absorption and satiety.
  • Understanding factors affecting gastric emptying is crucial for digestive health.

Purpose of the Study:

  • To investigate the effect of different exercise intensities on solid meal gastric emptying rates in healthy young males.

Main Methods:

  • Gastric emptying of radiolabeled beef stew was measured in 10 healthy males.
  • Subjects underwent three conditions: resting, walking at 3.2 km/hr, and walking at 6.4 km/hr.
  • Gastric emptying was monitored using external gamma cameras.

Main Results:

  • Exercise significantly accelerated gastric emptying compared to rest.
  • Gastric emptying half-time (t1/2) at rest was 72.6 min.

Related Experiment Videos

  • Walking at 3.2 km/hr reduced t1/2 to 44.5 min, and at 6.4 km/hr to 32.9 min (P < 0.0051 for both).
  • Higher intensity exercise (6.4 km/hr) resulted in significantly faster emptying than lower intensity (3.2 km/hr) (P = 0.0249).

    • Conclusions:

    • Exercise intensity is a significant physiological factor influencing solid meal gastric emptying rates.
    • Increased physical activity, particularly at higher intensities, enhances the rate at which the stomach empties solid food.