Department of Psychiatry, Hualien Armed Forces General Hospital, Hualien Taiwan.
Departments of Psychiatry, Tri-Service General Hospital Beitou Branch, National Defense Medical Center, Taipei, Taiwan.
Mil Med. 2020 Aug 14;185(7-8):e1240-e1246. doi: 10.1093/milmed/usz469.
Psychological stress is associated with sedentary behavior, which may impair exercise performance. The aim of our study was to examine the association between psychological stress and physical fitness in military personnel.
A military cohort of 4080 subjects in Taiwan was used for the analysis. The Brief Symptoms Rating Scale (BSRS-5) includes items of anxiety, depression, hostility, interpersonal sensitivity, and insomnia measured by a five-point Likert-type scale of 0-4. Psychological stress was defined as normal (n = 3657), slight (n = 314), and great (n = 109) by BSRS-5 score ≤5, 6-9, and ≥10, respectively. Aerobic fitness and anaerobic fitness were evaluated by the time of 3000-meter running and the numbers of 2-min sit-ups and 2-min push-ups, respectively. Multiple linear and logistic regression analyses were used to determine the relationship.
As compared with normal stress, slight and great stress were positive dose-dependently correlated with 3000-meter running time (β = 9.09 and 14.44; P = 0.0032 and 0.048, respectively) after adjusting for age, sex, service specialty, body mass index, systolic blood pressure, cigarette smoking, alcohol intake, hemoglobin levels, and exercise frequency. Similarly, those with slight stress were more likely to be the worst 10% performers in the 3000-meter run test relative to the normal individuals (odds ratio and 95% confidence intervals: 1.50, 1.00-2.24). By contrast, there was no relationship of psychological stress with the numbers of 2-min sit-ups and 2-min push-ups.
Our findings suggest that the presence of higher psychological stress on military personnel may reduce their cardiorespiratory fitness but not affect the anaerobic fitness.
心理压力与久坐行为有关，久坐行为可能会影响运动表现。本研究的目的是探讨军人心理压力与身体健康之间的关系。
我们对来自中国台湾的 4080 名军人进行了分析。简明症状量表（BSRS-5）包括焦虑、抑郁、敌意、人际关系敏感和失眠 5 个项目，采用 0-4 分的 5 级 Likert 评分。BSRS-5 评分≤5、6-9 和≥10 分别定义为心理压力正常（n=3657）、轻度（n=314）和重度（n=109）。有氧运动能力和无氧运动能力分别通过 3000 米跑时间和 2 分钟仰卧起坐、2 分钟俯卧撑次数进行评估。采用多元线性和 logistic 回归分析来确定两者之间的关系。
与正常压力相比，轻度和重度压力与 3000 米跑时间呈正相关（β=9.09 和 14.44；P=0.0032 和 0.048），且在校正年龄、性别、服役专业、体重指数、收缩压、吸烟、饮酒、血红蛋白水平和运动频率后，这种相关性仍然存在。同样，与正常个体相比，轻度压力的个体更有可能是 3000 米跑测试中表现最差的 10%（比值比和 95%置信区间：1.50，1.00-2.24）。相反，心理压力与 2 分钟仰卧起坐和 2 分钟俯卧撑次数之间没有关系。
本研究结果表明，军人的心理压力水平较高可能会降低他们的心肺适能，但不会影响他们的无氧适能。
