Studies on the temperature of the gastrointestinal tract: second report; influence of bathing on the intragastric temperature.

Abstract

The changes of the intragastric temperature of the human body by taking a bath were studied at the four hot-springs of the Narugo Spa. The results of the baths above 40°C were given and the following facts were confirmed. 1. The intragastric temperature during the bath rises linear with the time. 2. The rise of the intragastric temperature is high and its direction coefficient is generally proportional to the temperature of the bath. 3. The type of the rise of the intragastric temperature does not significantly differ according to the kind of spring. 4. In the alkaline sulphur spring, the maximum rise was highest and the fall after bathing was slowest. 5. There were no significant differences among the maximum rises of the baths of 15 minutes at 40°C, of 8 at 44°C and of 4 at 47°C, in the sulphate spring. The after-effect of the bath remained proportionally to the temperature of the bath. 6. The changes of the axillary temperature have the same tendency as those of the intragastric. The maximum rise was about 1.0°C higher and the fall was steeper in the former than in the latter. 7. The rise of the intragastric temperature by the whole body bath is higher than that by the partial bath of legs. 8. The fall of the intragastric temperature after bathing is expressed by more than 2 exponential functions. In the bath of 37°C in the carbondioxated spring the intragastric temperature at first fell and then rose slowly.