Seven marathons in seven days
Fluid metabolism in athletes running seven marathons in seven consecutive days In recent years, multilayer runs have become increasingly popular. To date, however, a study has never studied what happens in the fluid balance when runners run a marathon every day during 7 days. We have used 26 runners (6 women and 20 men) the day before the start, then after day 1, day 4 and day 7 different parameters of the fluid budget and also calculated further parameters. It came to a decrease in body weight, body fat and hematocrit.An increase could be recorded for plasma osmolality, urine osmolality, potassium in urine, specific gravity, urine, urea in the blood, as well as in urine, and the transstubular potassium gradient.
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