Irlenbusch U, Röhr M, Sterba B, Sterba M, Thoss F, Drischel H
Chronobiologia. 1985 Oct-Dec;12(4):339-49.
The present study is an attempt for an objective classification of types of activity by determining the daily periodicity of autonomically influenced body functions. On the basis of a questionnaire, the 23 probands of the test group were classified into morning types (7), evening types (11) and indifferent types (5). Then, for a period of 12h from 07(00) to 18(00), 17 different autonomically influenced parameters were recorded and their mean daily courses calculated separately for the probands of the morning and of the evening type. A comparison of the synchronous values showed that the greatest differences occur between the types at 10(00) and 17(00). At these times of the day, a multidimensional variance and discrimination analysis was carried out which resulted in a very good discrimination of the probands at 10(00) and in a satisfactory one at 17(00). At the same time, an evaluation of the individual parameters recorded was carried out according to their informative value. The most important parameters proved to be the vibration threshold, the R wave height, T wave height, peak time of the pupillogram and d.c. resistance of the skin. On the basis of these results, the classification of 10 probands of an independent test group was effected by a discrimination analysis. In 7 cases this resulted in an agreement with the classification according to the questionnaire.
本研究旨在通过确定受自主神经系统影响的身体功能的每日周期性，对活动类型进行客观分类。根据一份问卷，测试组的23名受试者被分为早起型（7人）、晚睡型（11人）和中间型（5人）。然后，在从07(00)至18(00)的12小时内，记录17个不同的受自主神经系统影响的参数，并分别计算早起型和晚睡型受试者的平均每日变化过程。同步值的比较表明，在10(00)和17(00)时，不同类型之间的差异最大。在一天中的这些时间点，进行了多维方差分析和判别分析，结果在10(00)时对受试者的判别效果非常好，在17(00)时效果令人满意。同时，根据记录的各个参数的信息价值进行了评估。最重要的参数被证明是振动阈值、R波高度、T波高度、瞳孔图峰值时间和皮肤直流电阻。基于这些结果，通过判别分析对独立测试组的10名受试者进行了分类。在7个案例中，这导致与根据问卷进行的分类一致。
