Heart rate variability (HRV) and blood pressure variability (BPV) changes during five minutes of supine baseline and 5 minutes prior to presyncope during head-up tilt following either a supine control period or centrifuge pre-conditioning.
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LF: low frequency (0.04–0.15 Hz) power; HF: high frequency (0.15–0.5 Hz) power; LF/ HF HF/LF: power ratio. HRV power unit is (ms)2; BPV power unit is (mm Hg)2. Heart rate variability (HRV) and blood pressure variability (BPV) changes during five minutes of supine baseline and 5 minutes prior to presyncope during head-up tilt following either a supine control period or centrifuge pre-conditioning.
创建时间：
2015-05-28
