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

Background Exercise intensities are prescribed using specific intensity zones (moderate,
heavy, and severe) determined by a 'lower'and a 'higher'threshold. Typically, ventilatory (VT) …

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 …

Aerobic and anaerobic thresholds of the three-zone exercise model are often used to
evaluate the exercise intensity and optimize the training load. Conventionally, these …

Abstract Background and Objectives Professionals in the domain of swimming have a strong
interest in implementing research methods in evaluating and improving training methods to …

This study examined the cardiac autonomic responses, as measured by heart rate variability
(HRV), during cycling exercise and short-term rest after energy drink consumption …

Fluctuations of the human heart beat constitute a complex system that has been studied
mostly under resting conditions using conventional time series analysis methods. During …

This study aims to analyze the agreement and precision between heart rate variability
thresholds (HRVT1/2) with ventilatory and lactate thresholds 1 and 2 (VT1/2 and LT1/2) on a …

Studies on the assessment of heart rate variability threshold (HRVT) during walking are
scarce. We determined the reliability and validity of HRVT assessment during the …

The assessment of heart rate variability (HRV) thresholds (HRVTs) as an alternative of
Ventilatory thresholds (VTs) is a relatively new approach with increasing popularity which …