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Plasma zinc uptake from a supplement during submaximal running.
A Singh1, F M Moses, B L Smoak
1Department of Military Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799.
Medicine and Science in Sports and Exercise
|April 1, 1992
Summary
This study found that moderate running did not impact zinc absorption from supplements. Zinc uptake into the plasma was similar whether participants ran or rested after taking a multivitamin.
Area of Science:
- Human Physiology
- Nutritional Science
- Exercise Physiology
Background:
- Zinc is an essential mineral crucial for numerous bodily functions.
- Understanding factors influencing zinc absorption is important for optimizing nutritional strategies.
Purpose of the Study:
- To investigate the effect of acute submaximal endurance running on plasma zinc uptake.
- To determine if exercise performed shortly after zinc supplementation alters its absorption.
Main Methods:
- Ten healthy men ingested a 25 mg zinc supplement.
- Plasma zinc concentrations were measured over 3 hours under both running and control conditions.
- Running involved 2 hours at 60-65% maximal oxygen uptake.
Main Results:
- Plasma zinc concentrations increased significantly in both running and control conditions by 2 hours.
- The average rates of zinc uptake into plasma were not significantly different between running (4.4 mumol.l-1.h-1) and control (3.8 mumol.l-1.h-1) conditions.
- Areas under the plasma zinc concentration-time curve were comparable between the two conditions.
Conclusions:
- Submaximal endurance exercise performed immediately before or during zinc supplementation does not appear to affect acute plasma zinc uptake.
- The findings suggest that short-term exercise does not impair the absorption of zinc from a multivitamin-mineral supplement.
- Further research is needed to explore the impact of chronic exercise on zinc absorption.