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Changes in urinary zinc and copper with strenuous physical exercise.

Azusa Kikukawa1, Asao Kobayashi

  • 1Pharmacochemistry Section, Japan Air Self Defense Force, Tokyo. azusakiku@aol.com

Aviation, Space, and Environmental Medicine
|October 26, 2002
PubMed
Summary

Strenuous physical training increased urinary zinc, copper, and noradrenaline in air rescue trainees. Adrenaline levels rose with both physical and mental exertion, indicating its sensitivity to various stressors.

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Area of Science:

  • Exercise physiology
  • Trace mineral metabolism
  • Neuroendocrinology

Background:

  • Air rescue trainees undergo 24 weeks of intense physical training.
  • Trace minerals zinc and copper are vital for physiological processes affected by exercise.
  • Urinary catecholamine excretion, including adrenaline and noradrenaline, rises with physical and mental stress.

Purpose of the Study:

  • To investigate changes in trace mineral and catecholamine excretion in air rescue trainees.
  • To determine if these changes vary based on the type of training undertaken.

Main Methods:

  • Urinary zinc, copper, noradrenaline, and adrenaline levels were measured in 11 trainees.
  • Measurements were taken before and after training sessions across four curriculum phases: control, preliminary, basic, and simulated mountain rescue.

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Main Results:

  • Urinary zinc and copper significantly increased after physical exercise phases (preliminary, basic, simulated).
  • Noradrenaline levels also rose significantly following physical exertion.
  • Adrenaline levels increased significantly across all training phases, regardless of physical exertion.

Conclusions:

  • Strenuous physical exertion elevated urinary zinc, copper, and noradrenaline.
  • Adrenaline excretion responded to both physical and mental stressors, unlike other measured parameters.