Title : 
Heart rate variability change induced by the mental stress: the effect of accumulated fatigue
         
        
            Author : 
Gohara, Takayuki ; Mizuta, Hirohisa ; Takeuchi, Isao ; Tsuda, Osamu ; Yana, Kazuo ; Yanai, Tatsumi ; Yamamoto, Yasuhide ; Kishi, Norimasa
         
        
            Author_Institution : 
Dept. of Electron. Inf., Hosei Univ., Tokyo, Japan
         
        
        
        
        
        
            Abstract : 
Evidence is shown that accumulated fatigue greatly affects statistical properties of the heart rate fluctuations. Comparison of heart rate variabilities before and after an exhausting physical and mental task was made for six volunteer male subjects. Significant changes in mean heart rate, variances and spectral characteristics were found showing the importance of considering the background physical and mental condition in the characterization of the heart rate
         
        
            Keywords : 
biocontrol; biomechanics; cardiology; electrocardiography; neurophysiology; ECG record; accumulated fatigue; autonomic nervous activity; background physical condition; exhausting physical task; heart rate fluctuations; heart rate variability change; mean heart rate; mental stress; mental task; six volunteer male subjects; spectral characteristics; statistical properties; Cities and towns; Fatigue; Fluctuations; Frequency estimation; Heart rate; Heart rate variability; Human factors; Informatics; Signal design; User interfaces;
         
        
        
        
            Conference_Titel : 
Biomedical Engineering Conference, 1996., Proceedings of the 1996 Fifteenth Southern
         
        
            Conference_Location : 
Dayton, OH
         
        
            Print_ISBN : 
0-7803-3131-1
         
        
        
            DOI : 
10.1109/SBEC.1996.493228