Effect of Thermal Stress and Muscular Exercise, With and Wihout Insulin Hypoglycaemia, on the Body Temperature, Perspiration Rate, and Electrolyte and Lactate Content of Sweat

Summary. Effect of thermal stress (Finnish Sauna‐bath) and muscular exercise (on treadmill) on the rise in body temperature, on the sweating rate, and electrolyte and lactate content of sweat is studied. In one half of the experiments, hypoglycaemia was induced by intravenous injections of insulin. There are no significant differences in the rate of sweating and in the composition of sweat during insulin hypoglycaemia and during euglycaemia. In the lactiite content of sweat there is some tendency to increased values with decreased blood sugar concentrations. The rise in body temperature under insulin hppoglycaemia is significantly lower than in experiments without insulin injection. The reason for this observation is briefly discussed.