Publication Date:
2019-07-19
Description:
Musculoskeletal activity accelerates inert gas elimination during oxygen breathing prior to decompression (prebreathe), but may also promote bubble formation (nucleation) and increase the risk of decompression sickness (DCS). The timing, pattern and intensity of musculoskeletal activity are likely critical to the net effect. The NASA Prebreathe Reduction Program (PRP) combined oxygen prebreathe and exercise preceding a 4.3 psia exposure in non-ambulatory subjects (a microgravity analog) to produce two protocols now used by astronauts preparing for extravehicular activity - one employing cycling and non-cycling exercise (CEVIS: 'cycle ergometer vibration isolation system') and one relying on non-cycling exercise only (ISLE: 'in-suit light exercise'). Current efforts investigate whether light exercise normal to 1 G environments increases the risk of DCS over microgravity simulation.
Keywords:
Aerospace Medicine
Type:
JSC-CN-34708
,
Aerospace Medical Association (AsMA) Annual Scientific Meeting: Human Performance and the Year of the Aerospace Medicine Professional; Apr 24, 2016 - Apr 28, 2016; Atlantic City, NJ; United States
Format:
application/pdf
