To measure the clothing pressure of girdles of different sizes and to clarify the physiological effects of clothing pressure, two kinds of experiments were carried out by using ordinary unmodified, over-the-counter girdles, and modified girdles with fasteners. There was a significant correlation between clothing pressure and whether the girdles were modified or unmodified (r=0.95, p<0.05) . As the sizes of the modified girdles decreased, clothing pressure increased. With higher pressure on the subjects, their heart rates significantly increased and their leg skin blood flow and skin temperature significantly decreased. Modified girdles with decreasing sizes significantly induced lower tidal volume and expiratory reserve volume, and higher inspiratory reserve volume.
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