The object in the present paper is to know quantitatively the relation between the clothing pressure applied on the trunks of bodies and the displacement or deformation of thorax, diaphragm, heart and stomach caused.
The roentgen photographs of thorax and abdomen were taken on six female subjects (19-26 years old) under four levels of the clothing pressure of 0, 10, 20 and 30 mmHg, by using a pressure suit. The displacement and deformation of each viscera were measured from the films thus obtained.
The results are as follows;
1. Thorax decreases in lateral width under the pressure more than 30 mmHg.
2. Diaphragm ascends under the pressure more than 20 mmHg.
3. Heart increases in lateral width, especially in the left medial interval and decreases in slope under the pressure more than 20 mmHg.
4. Stomach increases in height and decreases in lateral width under the pressure more than 10 mmHg, respectively.
5. The effects of the clothing pressure on viscera seem as follows; at first on stomach, then on diaphragm and heart and last by on thorax.
6. These results are statistically significant at 1% or 5% level.
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