Research Center in Applied Combat (CESCA), Toledo, Spain.
Faculty of Sport Sciences, Department of Sport Science, European University of Madrid, Calle Tajo, s/n, 28670 Villaviciosa de Odón, Madrid, España.
J Med Syst. 2017 Aug;41(8):124. doi: 10.1007/s10916-017-0772-x. Epub 2017 Jul 11.
The present research aimed to analyze the effect of combat stress in the psychophysiological response and attention and memory of warfighters in a simulated combat situation. Variables of blood oxygen saturation, heart rate, blood glucose, blood lactate, body temperature, lower body muscular strength manifestation, cortical arousal, autonomic modulation, state anxiety and memory and attention through a postmission questionnaire were analyzed before and after a combat simulation in 20 male professional Spanish Army warfighters. The combat simulation produces a significant increase (p < 0.05) in explosive leg strength, rated perceived exertion, blood glucose, blood lactate, somatic anxiety, heart rate, and low frequency domain of the HRV (LF) and a significant decrease of high frequency domain of the heart rate variability (HF). The percentage of correct response in the postmission questionnaire parameters show that elements more related with a physical integrity threat are the most correctly remembered. There were significant differences in the postmission questionnaire variables when participants were divided by the cortical arousal post: sounds no response, mobile phone correct, mobile phone no response, odours correct. The correlation analysis showed positive correlations: LF post/body temperature post, HF post/correct sound, body temperature post/glucose post, CFFTpre/lactate post, CFFT post/wrong sound, glucose post/AC pre, AC post/wrong fusil, AS post/SC post and SC post/wrong olfactory; and negative correlations: LF post/correct sound, body temperature post/lactate post and glucose post/lactate post. This data suggest that combat stress actives fight-flight system of soldiers. As conclusion, Combat stress produces an increased psychophysiological response that cause a selective decrease of memory, depending on the nature, dangerous or harmless of the objects.
本研究旨在分析战斗应激对模拟战斗情境中战士的心理生理反应和注意力与记忆力的影响。在 20 名西班牙职业陆军战士进行战斗模拟前后，通过任务后问卷分析了变量，包括血氧饱和度、心率、血糖、血乳酸、体温、下半身肌肉力量表现、皮质唤醒、自主调节、状态焦虑和记忆与注意力。战斗模拟会显著增加（p<0.05）爆发性腿部力量、感知用力、血糖、血乳酸、躯体焦虑、心率和心率变异性的低频域（LF），并显著降低心率变异性的高频域（HF）。任务后问卷参数的正确反应百分比表明，与身体完整性威胁更相关的元素是最容易记住的。当参与者根据皮质唤醒后分组时，任务后问卷变量存在显著差异：无声无反应、手机正确、手机无反应、气味正确。相关分析显示 LF 后/体温后、HF 后/正确声音、体温后/血糖后、CFFT 前/乳酸后、CFFT 后/错误声音、血糖后/AC 前、AC 后/错误枪声、AS 后/SC 后和 SC 后/错误嗅觉呈正相关；而 LF 后/正确声音、体温后/乳酸后和血糖后/乳酸后呈负相关。这些数据表明，战斗应激激活了士兵的战斗-逃跑系统。结论是，战斗应激会引起心理生理反应增强，导致记忆选择性下降，这取决于对象的性质，是危险的还是无害的。
