Ability of short-time Fourier transform method to detect transient changes in vagal effects on hearts: a pharmacological blocking study

1 KIHU-Research Institute for Olympic Sports, Jyväskylä, Finland; and 2 Department of Biology of Physical Activity, University of Jyväskylä, Jyväskylä, Finland Submitted 19 January 2005 ; accepted in final form 14 December 2005 Conventional spectral analyses of heart rate variability (HRV) have been...

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