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Comparison of cardiac output between practitioners and nonpractitioners of yoga before and after physical stress intervention

Madhu, DR and Vijayaraghava, A and Doreswamy, V and Narasipur, OS (2017) Comparison of cardiac output between practitioners and nonpractitioners of yoga before and after physical stress intervention. In: National Journal of Physiology, Pharmacy and Pharmacology, 7 (3). pp. 317-322.

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Official URL: https://doi.org/10.5455/njppp.2017.7.1234112122016


Background: Modern lifestyle and daily stress due to various causes have an adverse effect on cardiovascular health. Yoga modulates the sympathetic nervous system and hypothalamic-pituitary axis to decrease the effects of stress. Increase in cardiac output (CO) within physiological limits has health benefits. Aims and Objective: We compared the alteration in CO in subjects practicing yoga and those not practicing yoga before and after exposure to an exercise challenge. Materials and Methods: A total of 94 healthy male subjects in the age group 20 to 60 years were included in the study. Subjects were divided into two groups. Yoga group (n = 47, mean age: 43.95 ± 6.61 years, mean body mass index (BMI): 24.09 ± 4.19 kg/m2) consisted of subjects who had practiced yoga (Asanas, Pranayama, and meditation) for over 2 years. Nonyoga group (n = 47, mean age: 44.17 ± 6.48 years, mean BMI: 24.33 ± 4.97 kg/m2) did not perform yoga or any other form of regular physical activity for the same duration. CO was measured using non-invasive CO monitor of L and T systems. Results: CO before exercise in yoga and non-yoga groups was 4.21 ± 0.63 L/min and 4.08 ± 0.57 L/min, respectively. The values of CO after exercise in yoga and non-yoga groups were 5.71 ± 0.58 L/min and 4.94 ± 0.53 L/min, respectively. CO after exercise challenge and difference in change of CO was statistically significant (P < 0.05) between the two groups. CO was significantly increased in yoga group after exercise but not in nonyoga group. Conclusion: There was a significant increase in CO after exercise in practitioners of yoga indicating an increase in cardiovascular endurance in practitioners of yoga.

Item Type: Journal Article
Publication: National Journal of Physiology, Pharmacy and Pharmacology
Publisher: Mr Bhawani Singh
Additional Information: The copyright for this article belongs to Mr Bhawani Singh.
Keywords: adult; Article; body mass; comparative study; controlled study; heart output; human; male; normal human; physical activity; yoga
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 18 Jul 2022 10:51
Last Modified: 18 Jul 2022 10:51
URI: https://eprints.iisc.ac.in/id/eprint/74777

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