Dynamic changes and significance of heart rate variability during the initial phase of acute Tibet plateau exposure
- VernacularTitle:男性青年急进高原初期心率变异性的变化及意义
- Author:
Min LONG
;
Jun QIN
;
Lan HUANG
;
Kaixin TIAN
;
Shiyong YU
;
Yang YU
- Publication Type:Journal Article
- Keywords:
plateau;
heart rate variability;
autonomic nerve system;
modulation
- From:Journal of Third Military Medical University
2003;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the dynamic changes and significance of heart rate variability(HRV)during the initial phase after acute exposure to Tibet plateau by combining time,frequency domain and non-linear analysis.Methods Eighty-six healthy young men of Han nationality underwent short-term(5 min)heart rate variability(HRV)monitoring at 560 meter above sea level(plain),then were transported to Tibet plateau(3675-meter above sea level)by airplane.There,all subjects were divided into 3 groups,and A gorup(n=12)underwent HRV monitoring on the 2nd day after arrival,B group(n=48)on the 3rd day,C group(n=26)on the 4th day.Results Compared with the data obtained at plain,the standard deviation of normal to normal intervals(SDNN),high frequency(HF)and total power(TP)decreased significantly(P50 ms(PNN50)and normalized high frequency(HFnu)also decreased obviously(P
