For 5 subjects, there was an error in the recording of HRV
parameters and hence were excluded from analysis.
ACWR and HRV
measures were modelled as categorical fixed effect predictor variables, whilst 'athlete ID' was included as a random effect.
Reliability of the HRV
thresholds method has been provided during maximal incremental cycling tests (18), but no study has been designed yet, to verify the HRV
thresholds' validity and reproducibility when determining L[T.
parameters in depression and control group are shown in Table 2 (time domain) and Table 3 (frequency domain).
Among the methods available to assess the status of the autonomic nervous system, HRV
has emerged as a simple and noninvasive method to assess the sympathovagal activity at sinoatrial level (TASK FORCE OF THE EUROPEAN SOCIETY OF CARDIOLOGY AND THE NORTH AMERICAN SOCIETY OF PACING AND ELECTROPHYSIOLOGY, 1996).
Even if heart rate value increases, LF/HF ratio was largely unaffected by either acute myocar-dial ischemia, exercise Thus, the LFcomponent of HRV
does provide an index of cardiac sympathetic drive but also reflects a complex sympathetic, parasympathetic, and other unidentified factors accounting for the largest portion of the variability in this frequency range.
The tests were analyzed using the program Kubios HRV
In Section 3 and Section 4, calculated HRV
parameters and discussion are ensured respectively.
The prevalence of HRV
was significantly different ( F = 10.
triangular index, which is the integral of the density distribution (i.
Premature heart beat was automatically ignored during HRV
with no traumatic occlusion is a novel method to quantitatively assess heart autonomic nervous system function and diagnose CHD.