Ventilatory capacity at altitude and its relation to mask design
- 15 December 1954
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. B. Biological Sciences
- Vol. 143 (910) , 32-39
- https://doi.org/10.1098/rspb.1954.0051
Abstract
It is shown that the ventilatory capacity of normal subjects increases on ascent to altitude. The increase is related to the decrease in lung-gas density and is compatible with the hypothesis that the work of maximum breathing remains constant at altitude (using the formula for the work of breathing developed by Otis, Fenn and Rahn). An oxygen mask designed for climbers using their full ventilatory capacity is described and its flow resistance compared with that of a low resistance apparatus for measuring a subject’s maximum voluntary ventilation.Keywords
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