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How significant is magnesium in thermoregulation?

G Stendig-Lindberg1, D Moran, Y Shapiro

  • 1Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel-Aviv University, Tel Hashomer, Israel.

Journal of Basic and Clinical Physiology and Pharmacology
|October 30, 1998
PubMed
Summary

This study shows that magnesium levels shift during heat acclimation. Serum magnesium decreases while mononuclear cell magnesium increases, indicating magnesium

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Area of Science:

  • Environmental Physiology
  • Human Physiology
  • Mineral Metabolism

Background:

  • Heat acclimation is crucial for individuals exposed to hot environments.
  • Understanding physiological adaptations, including mineral shifts, is vital for optimizing performance and health.
  • Magnesium's role in cellular function suggests its potential involvement in thermoregulation and adaptation.

Purpose of the Study:

  • To investigate the changes in serum, mononuclear, and erythrocyte magnesium levels during a controlled heat acclimation protocol.
  • To determine the dynamics of magnesium distribution between different compartments in the body during heat exposure.
  • To elucidate the role of magnesium in the human body's adaptation to heat stress.

Main Methods:

  • Nine healthy young males underwent a 10-day heat acclimation protocol (40°C, 40% RH, 2h/day, treadmill walking).

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  • Serum magnesium (S-Mg), mononuclear magnesium (M-Mg), and erythrocyte magnesium (E-Mg) were measured on days 1, 5, and 10, pre- and post-exposure.
  • Statistical analysis was performed to assess changes in magnesium levels over the acclimation period.

    • Main Results:

    • Serum magnesium (S-Mg) decreased significantly after heat exposure, with a sustained decrease observed by day 10.
    • Mononuclear magnesium (M-Mg) showed a significant increase post-exposure, suggesting a shift from serum to cells.
    • Erythrocyte magnesium (E-Mg) initially increased by day 5, then gradually returned towards baseline by day 10.

    Conclusions:

    • Heat acclimation induces significant shifts in magnesium distribution within the body.
    • Magnesium appears to play a critical role in the physiological adaptation processes during heat exposure.
    • Further research is warranted to explore the specific mechanisms of magnesium's involvement in heat acclimation.