Respiration was recorded during parabolic flight in an aircraft with a closed system spirometer. The subjects were positioned in turn in a sitting, lying, and head down attitude during the high-g phases of the flight. Shifts of mean tidal volume and of mean thoracic circumference were determined manually from strip chart recordings. A net inspiratory shift of mean tidal volume is present in more than 50 percent of all parabolas investigated during the low-g phase while 12.5 percent show the opposite result. Of all 10 parabolas with shifts of mean tidal volume, 80 percent show a decrease of mean thoracic circumference, as measured by strain gage transducer.


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    Title :

    Respiratory Parameters Aboard an Aircraft Performing Parabolic Flights


    Contributors:

    Publication date :

    1987


    Size :

    4 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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