Comparison of Heart Rate Variability between Normoxia and Hypobaric Hypoxia Exposure

• 作者: Yuanyuan Liu Zhengtao Cao Mengsun Yu Jun Yang Binhua Wang Yingying Ma
• 来源期刊: 中国生物医学工程学报（英文版）
• 年，卷（期）: 2020,（2）
• 所属期刊栏目: Research papers
• 页码范围: 25-30
• 页数: 6页
• 语种: 英文

摘要

This study aimed to use the sample entropy ( SampEn) method to compare the difference between normoxia and hypo-baric hypoxia exposure in heart rate variability. Eight healthy male volunteers were included in this research. For each sub-ject, electrocardiography and finger pulse signal were recorded to obtain the heart rate time series. The SpO2 signal was col-lected at the same time. In normoxia or hypobaric hypoxia 4300 m section, the segment of RR time series from the second 5 min episode (from the 6th to the 10th min) was chosen for the SampEn calculation. The differences between normoxia and hypobaric hypoxia states were analyzed. Results showed that a significant difference exists in SampEn between two states (normoxia 0. 54±0. 05 vs hypobaric hypoxia 4300 m exposure 0. 46±0. 05), indicating the regulatory mechanisms of autonomic nervous system from a nonlinear perspective.