| 제목 | Head-up Tilt 상태에서 심박변동과 자율신경활동 균형의 관계에 관한 연구 | ||
|---|---|---|---|
| 작성자 | 관리자 | 등록일 | 2006-07-28 |
내용
대한의용생체공학회 1997;18(1):37-44
Head-up Tilt 상태에서 심박변동과 자율신경활동 균형의 관계에 관한 연구
정기삼. 신건수. 안 준. 전중선. 김준수. 박창일. 이명호
연세대학교 공과대학 전기공학과, 연세대학교 의료기기 기술 연구소, 연세대학교 재활의학과, 삼성서울병원 심혈관센터
In this paper, the power spectral analysis of heart rate variability(HRV) was performed to evaluate effect of orthostatic stress with head-up tilt on autonomic nervous system(ANS) for 25 healthy male subjects(age: 24±5 yr.) and a new method was proposed to assess the autonomic balance. The ECG and respiration signals were recorded at tilt angles of 0o, 45 o, 90 o and 0 o successively for 10 minutes per each stage under the condition of frequency controlled respiration(0.25Hz). Heart rate(HR) gradually increased as the angle increased. Similarly, according to the increment of angle, normalized low frequency component(0.05~0.15Hz) gradually increased, whereas normalized high frequency component(0.20~0.30Hz) was reduced. From these results it is speculated that orthostatic stress, head-up tilt, results in the prevalence of sympathetic one in autonomic balance with the increment of sympathetic tone and the decrement of parasympathetic tone, which seems to mean that autonomic nervous system plays a major role in compensating for disturbances of cardiovascular system due to it.
