Evaluation of autonomic nervous system indices using the postural tilt test (orthostatic position).

Values expressed as medians (interquartile range)
* p values were calculated using Kruskal-Wallis test
** p <0.05 compared to control group using Tukey test
LFr: low frequency; HFr: high frequency; ms2: milliseconds squared; n.u.: normalized units.; Change LFr and HFr (n.u.): Change of each component from rest to orthostatic position in normalized units
Evaluation of autonomic nervous system indices using the postural tilt test (orthostatic position).