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10名健康男性青年卧位在-6.67 kPa下体负压(LBNP)作用下,血压明显下降,心率加快,心率变异性(HRV)和血压变异性(BPV)功率谱低频成份能量(LF％和LFP％)均较平静对照水平明显增加,HRV谱高频成份能量(HF％)明显减少;证明HRV和BPV谱分析能敏感地反映LBNP条件下心血管自主神经调节特
Under the negative pressure of -6.67 kPa (LBNP), 10 healthy male supine position showed a significant decrease in blood pressure and heart rate, and the low-frequency component energy (LF% and LFP) of heart rate variability (HRV) and BPV power spectrum %) Were significantly higher than the level of calm control, HRV spectrum high frequency component energy (HF%) significantly reduced; proof of HRV and BPV spectrum analysis can sensitively reflect LBNP conditions of cardiovascular autonomic nervous modulation