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Protective Effects of the Launch/Entry Suit (LES) and the Liquid Cooling Garment(LCG) During Re-entry and Landing After SpaceflightHeart rate and arterial pressure were measured during shuttle re-entry, landing and initial standing in crewmembers with and without inflated anti-g suits and with and without liquid cooling garments (LCG). Preflight, three measurements were obtained seated, then standing. Prior to and during re-entry, arterial pressure and heart rate were measured every five minutes until wheels stop (WS). Then crewmembers initiated three seated and three standing measurements. In subjects without inflated anti-g suits, SBP and DBP were significantly lower during preflight standing (P = 0.006; P = 0.001 respectively) and at touchdown (TD) (P = 0.001; P = 0.003 respectively); standing SBP was significantly lower after WS. on-LeG users developed significantly higher heart rates during re-entry (P = 0.029, maxG; P = 0.05, TD; P = 0.02, post-WS seated; P = 0.01, post-WS standing) than LCG users. Our data suggest that the anti-g suit is effective, but the combined anti-g suit with LCG is more effective.
Document ID
20100030565
Acquisition Source
Johnson Space Center
Document Type
Preprint (Draft being sent to journal)
Authors
Perez, Sondra A. (Wyle Labs., Inc. Houston, TX, United States)
Charles, John B. (NASA Johnson Space Center Houston, TX, United States)
Fortner, G. William (Wyle Labs., Inc. Houston, TX, United States)
Hurst, Victor, IV (Wyle Labs., Inc. Houston, TX, United States)
Meck, Janice V. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2002
Subject Category
Man/System Technology And Life Support
Report/Patent Number
JSC-CN-7521
Funding Number(s)
CONTRACT_GRANT: NAS9-18942
Distribution Limits
Public
Copyright
Public Use Permitted.

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