| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To evaluate the condition of a subject more accurately. <P>SOLUTION: Successive n pieces of RR interval data are acquired, and a maximum value and a minimum value of the acquired R interval data are extracted. The width W of a distribution range of the RR interval data is calculated on the basis of the maximum and minimum values, and a coefficient of variation C of the RR interval data is calculated. The calculated coefficient of variation C is then compared with an average value of the subject's RR interval data and with a normal coefficient of variation R corresponding to the distribution range of the RR interval data to acquire a condition index Z. The normal coefficient of variation R is acquired on the basis of reference characteristic data which show the relationship between an average of RR interval data, a distribution range of the RR interval data and a coefficient of variation and is formed on the basis of RR interval data collected from a person in a normal condition. By referring to a determination table specifying a subject's condition for each range of the condition index Z, the subject's condition corresponding to the acquired condition index Z is specified. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
