Power spectrum analysis of heart rate variability to assess the changes in sympathovagal balance during graded orthostatic tilt.
作者： N Montano , T G Ruscone , A Porta , F Lombardi , M Pagani
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摘要: … The tilt angle was correlated to both LF and HF (expressed in normalized units [nu]) and to … Lower levels of correlation were found with HF (in ms2) and RR interval. No correlation was …
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