1991-07-01

Effects on Man of 46-Day Life in a Confined Space at Normal Pressure 911533

Six volunteers were selected and submitted at regular intervals throughout a 46-day control experiment in a climatic chamber to a large number of biological investigations (respiratory function, acid-base balance, circulatory function, biochemical determinations on blood and urine specimens) as well as psychomotor tests.
The results obtained clearly indicate that two kinds of adaptation occur:
  • the first occurring during the first 2-3 days of confinement essentially marked by a significant increase of urinary volume and electrolyte output;
  • the second, throughout the experiment mainly consists of a slight and progressive decrease of red blood cell count and plasma potassium.
Other parameter changes were well within range of the measuring technique's accuracy and physiological background; except for urinary calcium output which still remained elevated.
Finally, confinement failed to induce any significant degradation in psychomotor performances in spite of a sensation of fatigue.
Such a control experiment provides precise determination of the role played by confinement alone in the observed biological variations during submarine and space missions.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X