Psychological stress measurement of athletes in sport activities

本研究的目的是筛选运动员心理应激反应的测量指标，并将其改进为有效的测量方法，并用这些指标考察运动员心理应激反应的特点。所选指标为体积描记(PTG)和唾液皮质酮(SC)。被选中的原因是能够在体育活动现场进行测量，不会产生心理压力，能够连续或重复测量。波高变异系数(Cv&lt；Wh&gt；)和脉冲间隔变异系数(Cv&lt；p-p&gt；)与交感函数有关。我们看到，在心电图中，Cv&lt；p-p&gt；与Cv&lt；R-R&gt；有很高的相关性，可能具有副交感神经功能。首先，采用心理测验(SAI、SSRS-RES)、PTG、血液应激激素和SC测试了普通学生对两种应激练习(心算、惊图)的急性应激反应。结果表明，焦虑等情绪的变化与血糖皮质激素和SC的变化有关。其次，我们用POMS、PTG和SC对运动员在联赛期间的应激反应进行了测量，结果表明，慢性高焦虑和愤怒状态与CV&lt；WH&GT；第三，对运动员在比赛前的急性应激反应进行了测试，结果表明，PTG和SC是反映运动员适应体育活动应激反应的指标。在此之后，我们将提高两个指标的精度，并继续测量。

Purpose of this study was to select indices for measuring athlete's psychological stress responses and improved it to effective way of measuring, and to investigated features of athlete's psychological stress responses with these indices. Selected indices was plethysmography (PTG) and salivary corticosterone (SC). Reasons of being selected are that they are able to be measured at scene of sports activities, they don't give psychological stress, and they are able to be measured successively or repeatedly. We can get coefficient of variation of wave height (CV_<WH>) and coefficient of variation of pulse interval (CV_<p-p>) from PTG.CV_<WH> is connected with sympathetic function. We saw that there was high correlation between CV_<p-p> and CV_<R-R> in ECG, and it could be of parasympathetic function.Three experiments are prepared. First, we measured acute stress response of general students to two stress exercises (mental arithmetic, shocking picture) using psychological tests (SAI, SSRS-res), PTG, blood stress hormones and SC.As a result, it showed that change of emotion such as anxiety was connected with change of blood glucocorticoid and SC.Second, we measured the stress response of athletes during league series using POMS, PTG and SC.As a result, it showed that state of chronic high anxiety and anger was connected with the change of CV_<WH>. Third, we measured acute stress response of athletes before game which he/she was demanded to win but it was hard, the SC was increased.These experiments showed that PTG and SC were index of stress response adapted to sports activities. After this, we will improve accuracy of two indices, and continue measuring.