It was observed that after 6 weeks of the A.N.B training, the ratios (the E:I ratio and the 30:15 ratio) had increased after the performance of the A.N.B for 5 minutes, as compared to the basal values.

for 5 minutes, showed that the E:I ratio in this group ranged between 1.13 to 1.29, with a mean of 1.20 and an SD of 0.04 and that the 30:15 ratio for this group ranged between 1.12 to 1.21, with mean of 1.17 and an SD of 0.03. The parasympathetic parameters which were recorded after performing A.N.B. The basal 30:15 ratio of this group ranged between 1.09 to 1.19, with a mean of 1.16 and an SD of 0.04. The basal E:I ratio of this group ranged between 1.11 to 1.22, with a mean of 1.17 and an SD of 0.04. The parasympathetic parameters were reassessed after 6 weeks of the A.N.B. After the training, they were called again and were assessed for PNS again at the basal condition and after performing A.N.B. (Alternate Nostril Breathing) training for 6 weeks, for 15 minutes daily. for 5 minutes and their PNS was assessed again.

The PNS (parasympathetic nervous system) assessments of the participants were done in the basal condition, after a rest of 10 minutes. The Heart Rate (HR) was measured from the R-R interval of the ECG by using lead II of the electro cardiograph machine (BPL cardiart machine). The tests were performed in the morning, with the subjects lying comfortably in a resting state. To assess their parasympathetic function, the deep breathing test (the E:I ratio) and the orthostatic tolerance test (the 30:15 test) were performed. Prior to their inclusion, the participants were well explained about the procedure and informed consents were obtained from them.ДЄll the participants reported after a light breakfast. The mean age, weight and height of the participants were 18.48 В± 0.55 years, 58.76 В± 4.06 kgs and 5.48 В± 0.08 feet respectively. Twenty five healthy, male students who were aged between 18-22 years were included in the study. The present study was carried out in the Department of Physiology of a medical institution in north India, over a period of one year.

Electro cardiograph machine