Document Detail

Visual symptoms and G-induced loss of consciousness in 594 Chinese Air Force aircrew--a questionnaire survey.
MedLine Citation:
PMID:  22360061     Owner:  NLM     Status:  In-Process    
A questionnaire survey was performed for the first time to assess the prevalence of visual symptoms and G-induced loss of consciousness (G-LOC) due to +Gz exposure in the Chinese Air Force (CAF) to determine the effectiveness of current G tolerance training. Responses were received from 594 individuals. Among them, 302 reported at least one episode of some sort of symptoms related to +Gz, including 110 (18.5%) with visual blurring, 231 (38.9%) with greyout, 111 (18.7%) with blackout, and 49 (8.2%) with G-LOC. Incidences were most common in aircrew with 250-1,000 flying hours (53.6%) and were more prevalent in those with fewer on type flying hours (p < 0.001). The most common situation was reported between +5 and 5.9 Gz. The results indicate a fairly high prevalence of visual symptoms and G-LOC among Chinese Air Force aircrew. There remains considerable scope for +Gz education, particularly in the early centrifuge training and selection of rational physical exercises.
Xin-Sheng Cao; Yong-Chun Wang; Li Xu; Chang-Bing Yang; Bing Wang; Jie Geng; Yuan Gao; Yan-Hong Wu; Xiao-Ying Wang; Shu Zhang; Xi-Qing Sun
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Military medicine     Volume:  177     ISSN:  0026-4075     ISO Abbreviation:  Mil Med     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-02-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984771R     Medline TA:  Mil Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  163-8     Citation Subset:  IM    
The Key Laboratory of Aerospace Medicine, Chinese Ministry of Education, Xi'an 710032, China.
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