Citation

Cao XS, Wang YC, Xu L, Yang CB, Wang B, Geng J, Gao Y, Wu YH, Wang XY, Zhang S, Sun XQ. Mil. Med. 2012; 177(2): 163-168.

Affiliation

The Key Laboratory of Aerospace Medicine, Chinese Ministry of Education, Xi'an 710032, China.

Copyright

(Copyright © 2012, Association of Military Surgeons of the United States)

DOI

unavailable

PMID

22360061

Abstract

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.

Language: en