Cardiac parasympathetic activity may be non-invasively investigated using heart rate
variability (HRV), although HRV is not widely accepted to reflect sympathetic activity …

Abstract Hydren, JR and Cohen, BS. Current scientific evidence for a polarized
cardiovascular endurance training model. J Strength Cond Res 29 (12): 3523–3530, 2015 …

Assessment of heart rate variability (HRV) is a common approach to examine cardiac
autonomic nervous system modulation that has been employed in a variety of settings …

Purpose This study investigated whether short-term heart rate variability (HRV) can be used
to differentiate between the immediate recovery periods following three different intensities …

Background: The evaluation of performance in endurance athletes and the subsequent
individualisation of training is based on the determination of individual physiological …

Background: Monitoring phasic responses of heart rate variability (HRV) in terms of HRV
reactivity [ie, the absolute change from resting state to on-task (ie, absolute values of HRV …

Purpose The aim of this study was to determine if heart rate variability (HRV) during
incremental test could be used to estimate ventilatory threshold (VT) in professional …

The concept of anaerobic threshold (AT) was introduced during the nineteen sixties. Since
then, several methods to identify the anaerobic threshold (AT) have been studied and …

Background It has never been possible to immediately evaluate heart rate variability (HRV)
during exercise. We aimed to visualize the real‐time changes in the power spectrum of HRV …

Aims of this study were: to verify if Recurrence Quantification Analysis (RQA) of Heart Rate
Variability (HRV) time series could determine both ventilatory thresholds in individuals with …