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Functional Body Capacities under the Conditions of Various Concentrations of Carbon Dioxide and Oxygen

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Abstract

We determined a permissible ratio between carbon dioxide and oxygen concentrations during accidental situations. The experiments (n = 138, 10 h each) on the effect of various concentrations of carbon dioxide and oxygen in the inhaled air were conducted on male volunteers aged 20–40 years subjected to a special medical examination. All experiments were divided into five series: hypercapnia + normoxia, hypercapnia + hyperoxia, hypercapnia + hypoxia, normocapnia + hypoxia, and ambient air (control). The results showed that functional capacities of the body are less impaired under the conditions of hypercapnia combined with hyperoxia. Thus, in accidental situations associated with rapid accumulation of carbon dioxide in the atmosphere of airtight chambers, a synchronous increase in pO2 to 220–230 torr can provide for the highest work capacity.

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  1. Institute of Medical and Biological Problems, State Research Center of the Russian Federation, Moscow, Russia

    L. Kh. Bragin & A. G. Goncharova

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  1. L. Kh. Bragin
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  2. A. G. Goncharova
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Bragin, L.K., Goncharova, A.G. Functional Body Capacities under the Conditions of Various Concentrations of Carbon Dioxide and Oxygen. Human Physiology 27, 91–94 (2001). https://doi.org/10.1023/A:1007167626554

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