Measurements related to geometrical methods in time domain Heart Rate Variability analysis
3 variables.
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SI (Stress Index)
SI: Baevsky stress index, computed according to the formula given in Baevsky 2009, is a geometric measure of HRV reflecting cardiovascular system stress
x0ec226HRV triangular index
HRV triangular index: integral of the histogram (i.e. total number of RR intervals) divided by the height of the histogram computed with a bin width of 1/128 seconds
x0ec227TINN
TINN: baseline width of the RR histogram evaluated through triangular interpolation
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