Browsing by Author "Vempati, R.P."

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Yoga based guided relaxation reduces sympathetic activity Judged from based on baseline levels.
(Psychological Reports, 2002) Vempati, R.P.; Telles, Shirley
35 male volunteers with ages ranged from 20 to 46 yrs were studied in two sessions, of yoga based guided relaxation and supine rest. Assessments of autonomic parameters were made in 15 subjects, before, during and after the practices, whereas oxygen consumption and breath volume were recorded in 25 subjects, before and after both types of relaxation. A significant decrease in oxygen consumption and increase in breath volume were recorded after guided relaxation (paired t test). There were comparable reductions in heart rate and skin conductance level during both types of relaxation. During guided relaxation the power of the low frequency component of the heart rate variability spectrum reduced, whereas the power of the high frequency component increased, suggesting reduced sympathetic activity. Also subjects with a base line ratio of LF/HF >0.5 showed a significant decrease in the ratio after guided relaxation, while subjects with a ratio < 0.5 at baseline showed no such change. The results suggest that sympathetic activity decreased after guided relaxation based on yoga, depending on the base line levels.
Yoga Based Isometric Relaxation Versus Supine Rest: A Study of Oxygen Consumption, Breath Rate and Volume and Autonomic Measures
(Journal of Indian Psychology, 1999) Vempati, R.P.; Telles Shirley
VERSUS SUPINE REST: A Study of Oxygen Consumption, Breath Rate and Volume and Autonomic Measures
Yoga based relaxation versus supine rest: a study of oxygen consumption, breath rate and volume & autonomic measures
(Journal of Indian Psychology, 1999) Vempati, R.P.; Telles, Shirley
Forty male volunteers with ages ranging from 16 to 46 yrs ware studied in two sessions, yoga based isometric relaxation technique (IRT) and supine rest (SR). Assessments of autonomic parameters were made in 15 subjects, before and after the practices, whereas oxygen consumption, breath rate and breath volume were recorded in 25 subjects, before and after IRT and SR. A significant decrease in breath rate after IRT and in linger Plethysmogram was recorded after SR. The results suggest possibilities for IRT in reducing some physiological signs of anxiety.