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J Appl Physiol 15: 554-556, 1960;
8750-7587/60 $5.00
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Lung volumes, lung compliance and airway resistance during negative-pressure breathing

E. Y. Ting 1, S. K. Hong 1, and H. Rahn 1

1 Department of Physiology, The University of Buffalo, Buffalo, New York

Lung volumes, airflow resistance and lung elastance were measured in seven subjects during various degrees of continuous negative-pressure breathing in the supine posture. At –30 cm H2O the expiratory reserve is reduced to about 30% of its normal value and the resistance to airflow is more than doubled. On the other hand, the pressure-volume curve of the lung measured with the aid of an esophageal balloon was not significantly altered by either negative-pressure or positive-pressure breathing.

Submitted on February 8, 1960






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