Military resilience research is increasing due to the growing literature associating resilience with stress adaptation. This study aimed to investigate which physiological stress adaptation components were associated with resilience in Special Operations Forces combat service members. Special Operations Forces combat service members (n = 117) self-reported resilience (ER89) and lifetime clinician-confirmed mild traumatic brain injury history. Participants also underwent transcranial Doppler ultrasonography to measure middle cerebral artery velocity during rest and a breath-holding task. Neither resilience nor mild traumatic brain injury history was significantly associated with middle cerebral artery velocity percent increase following breath-holding; younger Special Operations Forces combat service members had a higher percent increase in middle cerebral artery velocity following a breath-holding task. Resilience was negatively associated with time to return to baseline middle cerebral artery velocity following peak velocity; whereas, mild traumatic brain injury history did not have a significant association. The Special Operations Forces combat service members that scored higher in resilience tended to return to baseline middle cerebral artery velocity following peak velocity faster than their less resilient counterparts. More resilient Special Operations Forces combat service members recovered faster from physiological stress (breath-holding) than less resilient counterparts. This is the first study to investigate resilience and cerebrovascular stress response and recovery in this population. Our initial findings indicated that the Ego Resiliency Scale may be an optimal resilience psychometric and should be used to evaluate effective military resilience trainings, which aim to improve performance and mental health.

中文翻译：

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特种作战部队战斗人员的复原力与神经生理压力之间的关系

由于越来越多的文献将复原力与压力适应联系起来，军事复原力研究正在增加。本研究旨在调查哪些生理压力适应成分与特种作战部队战斗服务成员的复原力有关。特种作战部队战斗服务成员（n = 117) 自我报告的复原力 (ER89) 和终生临床医生确认的轻度创伤性脑损伤史。参与者还接受了经颅多普勒超声检查，以测量休息和屏气任务期间的大脑中动脉速度。弹性和轻度脑外伤史均与屏气后大脑中动脉速度百分比增加显着相关；年轻的特种作战部队战斗服务成员在完成屏气任务后大脑中动脉速度增加的百分比更高。弹性与峰值速度后恢复到基线大脑中动脉速度的时间呈负相关；而轻度创伤性脑损伤史没有显着关联。弹性得分较高的特种作战部队作战人员往往比弹性较差的同行更快地在峰值速度后恢复到基线大脑中动脉速度。更有弹性的特种作战部队战斗人员从生理压力（屏气）中恢复得比恢复能力较差的同行更快。这是第一项调查该人群的复原力和脑血管应激反应和恢复的研究。我们的初步研究结果表明，自我复原力量表可能是一种最佳复原力心理测量方法，应用于评估有效的军事复原力训练，旨在提高绩效和心理健康。