Changes of stress response in submarine escapees following 50 m fast buoyancy ascent
10.3760/cma.j.issn.1009-6906.2011.06.00
- VernacularTitle:50m实艇快速上浮脱险时艇员应激功能的变化
- Author:
Shi ZHANG
1
;
Yi-qun FANG
1
;
Ci LI
1
;
Heng-rong YUAN
1
;
Jian YAO
1
;
Miao MENG
1
Author Information
1. 海军医学研究所, 上海,200433
- Publication Type:Journal Article
- Keywords:
Fast buoyancy ascent escape;
Stress;
Natioral Aeronautics and Space Administrationtask load index
- From:
Chinese journal of nautical medicine and hyperbaric medicine
2011;18(6):330-332
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore changes of stress response in submarine escapees following 50 m fast buoyancy ascent.Methods In combination with on-site training of a certain submarine unit,four man-time air-breathing fast buoyancy ascent escapes were carried out from a depth of 50 m.Changes in blood pressure,heart rate and concentrations of cortisol and immunoglobulin A in the saliva of the submariners were detected both before and after escapes.And 30 mins after submarine escape,the escapees filled up the check list of NASA-TLX.Results The systolic pressure of the submariners 〔 ( 138.75 ± 8.77 ) mm Hg 〕 increased quite considerably following fast buoyancy ascent,when it was compared with that before escape 〔 ( 125.25 ± 8.92 )mm Hg 〕 ( P ＜ 0.01 ).The cortisol concentration in the saliva of the submariners 〔 ( 5.35 ± 2.16) μg/L 〕 also increased quite obviously following fast buoyancy ascent escape,when it was compared with that before escape〔 (3.30 ± 1.78 ) pg/L〕 ( P ＜ 0.05 ).However,no statistical significance could be noted in the changes of diastolic pressure,heart rate and concentrations of immunoglobulin A in the saliva of the submariners.Results of NASA-TLX demonstrated that total scores of subjective psychological stress were generally identical to the changes in anxiety scores.Conclusions Real submarine escape could induce a increase in the level of stress,which might be the result of an increase in the sense of anxiety with cognitive appraisal of the submariners.
