Assessment of Autonomic Nervous Function in Young Adults by Power Spectral Analysis of Heart Rate Variability.
- Author:
Joong Son CHON
1
;
Sae Il CHUN
;
Kyung Ja CHO
;
Mi Ryeong JIN
;
Tae Sun KIM
;
Deog Young KIM
;
Juhn AHN
;
Kee Sam JEONG
;
Kun Soo SHIN
;
Myoung Ho LEE
Author Information
1. Department of Rehabilitation Medicine, Yonsei University College of Medicine, Korea.
- Publication Type:Original Article
- Keywords:
Heart rate variability(PSA);
Sympatho-vagal balance;
Head-up tilt;
Power spectral analysis(PSA)
- MeSH:
Female;
Healthy Volunteers;
Heart Rate*;
Heart*;
Humans;
Male;
Young Adult*
- From:Journal of the Korean Academy of Rehabilitation Medicine
1997;21(5):928-935
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The powers of the low-frequency(LF) and high-frequency(HF) components characterizing heart rate variability (HRV) appear to reflect, in their reciprocal relationship, changes in the state of the sympatho-vagal balance occurring during orthostatic stress with head-up tilt. We studied 24 healthy volunteers (median age, 23.1 years) who were subjected after a rest period to a series of passive head-up tilt steps chosen from the following angles: 0 degree. 15 degrees, 30degrees, 45degrees, 70degrees, and 90degrees under the condition of frequency controlled respiration(0.25Hz) in order to get data of the Korean young adults. During head-up tilt, heart rate and normalized low frequency power(LF(N : 0.05-0.15 Hz) of HRV showed significant increase(p=0.000), but normalized high frequency power(HFN : 0.2-0.3 Hz) and total power showed progressive decrease(p=0.000, p<0.01 respectively). Male showed significantly higher LF(N and lower HFN than female at tilt table angle 0degree(p<0.01). Power spectral analysis of HRV appears to be capable of providing a noninvasive quantitatibve evaluation of graded changes in the state of the sympatho-vagal balance.
