Magnesium supplementation is indicated in sports and occupational medicine to compensate for the increased loss. ³

• Depending on the intensity of physical exercise, the physical condition, the fitness level, the climatic conditions and the body surface area, the loss by sweating may range from several hundred millilitres to more than two litres an hour. ¹
• The mean magnesium concentration is about 36mg/l of sweat, but can vary depending on the physical activity. ^2,3
• Cells lose magnesium during physical activity. The consumption of ATP results in the release of mg, which is then transported out of the cell (Mg redistribution).

1. Palmer, M.S. & Spriet, L.L. (2008). Sweat rate, salt loss, and fluid intake during an intense on-ice practice in elite Canadian male junior hockey players. Applied physiology, nutrition and metabolism, 33 (2), 263-271
2. Nationale Verzehrstudie II. Max-Rubner-Institut. D-A-CH 2008
3. Nielsen & Lukaski. Update on the relationship between magnesium and exercise.
   Magnesium Research 2006; 19 (3): 180-9