예비조종사의 신체조성과 가속도에 의한 의식상실의 관련성 연구
A Study on the relationship between body composition and loss of consciousness by G-induced acceleration of preliminary pilots
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고성능 전투기는 조종사의 능력이 중요시 되며, 급선회 등의 가속도에 대처할 능력이 필요하다. 따라서, 본 연구는 G내성과 신체조성의 관계를 규명하고자 하였다. 312명의 남성은 신체조성 측정과 가속도 실험을 실시하였으며, 의식여부에 따라 그룹을 분류하였다. 결과는 독립 t-test와 다변량 로지스틱 회귀분석을 통해 분석하였다. 연구 결과, 의식상실 그룹과 비의식상실 그룹은 체중(p<.05), 체지방량, 체지방률, 근육률(p<.001)에서 차이가 나타났으며, 체지방량(OR=.175~.381), 체지방률(OR=.151~.412)이 낮고, 근육률(OR=.086~.306)이 높은 그룹에서 의식상실률이 낮았다. G내성은 체지방량, 체지방률 그리고 근육률과 관련이 있었으며, 체지방률 14.1% 이하, 근육률 48.6% 이상의 신체조성을 가질 때 의식상실률이 크게 감소하였다.
Abstract
The ability of pilots is important for being a high-performance fighter aircraft. In particular, the ability to cope with the acceleration that occurs during a sharp turn in close combat is needed. The purpose of this study was to examine the relationship between body composition and G-tolerance in 312 preliminary pilots. Body composition measurement and acceleration experiments were administered on the participants and then they were grouped according to their consciousness. Independent t-test and multivariate logistic regression analysis were used for data analysis. The results showed that weight(p<.05), fat mass, percentage body fat, and percentage muscle mass were significantly different between LOC group and non-LOC group. The rate of loss of consciousness was low in the group with low fat mass(OR = .175 ~ .381) and percentage body fat(OR = .151 ~ .412), and high percentage muscle mass(OR = .086 ~ .306). G-tolerance was related to fat mass, percentage body fat and percentage muscle mass. In addition, the loss of consciousness was significantly decreased both the body composition was 16.6% or less and the percentage muscle mass was 48.6% or more.
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