A study on objective assessment of subjective stress by using neurophysiological indicators

本研究以QT间期和QT指数为客观指标，对150名学生进行主观应激评估：(1)测量150名学生的平均RR间期和QT间期，以检验QT相关参数与可能扭曲这些参数的协变量之间的联系。性别、BMI和脂肪百分比与Bazett‘s QT或Rautaharju’s QT指数显著相关。(2)为明确特定饮食行为是否与肝损伤有关，对1809名工人进行了肝脏标志物和午餐菜单等饮食行为调查。习惯性摄入方便面和酒精摄入与ALT升高相关。(3)为探讨工作和家庭压力对自主神经功能的影响，对1809名工人的QT相关参数与工作和家庭压力之间的关系进行了分析。QT指数与饮酒习惯、家庭压力有关。综上所述，QT指数似乎是一个比QTc值更有用的指标；此外，QT指数可能反映家庭压力。

Three studies were done to assess subjective stress by using objective indicators, i.e., QTc time and QT index on ECG: (1) To test links between QT-related parameters and the covariates possibly distorting them, the averaged RR and QT intervals were measured for 150 students. Sex, BMI and fat percentage were significantly related to the Bazett's QTc or Rautaharju's QT index. (2) To clarify if specific dietary behavior is related to liver injury, liver markers and dietary behaviors such as lunch menu were explored in 1809 workmen. Habitual instant noodle ingestion and ethanol intake were associated with elevated ALT. (3) To assess the impact of job and domestic stresses on autonomic nervous function, the links between the QT-related parameters and job/domestic stresses were analyzed in 1809 workmen. QT index was associated with drinking habit, and domestic stress. In conclusion, QT index appears to be a more useful indicator than the QTc; also, QT index may reflect domestic stress.