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07 January 2020 : Original article  

Body Temperature and Energy Expenditure During and After Yoga Breathing Practices Traditionally Described as Cooling

Shirley Telles1ADEF*, Kumar Gandharva1BCF, Sachin Kumar Sharma1DEF, Ram Kumar Gupta1DEF, Acharya Balkrishna1AG

DOI: 10.12659/MSMBR.920107

Med Sci Monit Basic Res 2020; 26:e920107

Abstract

BACKGROUND: In traditional yoga texts, sheetali and sitkari pranayamas are described as cooling. The present study was aimed at recording the surface body temperature, oxygen consumed, and carbon dioxide eliminated before, during, and after performance of sheetali and sitkari pranayamas.

MATERIAL AND METHODS: Seventeen healthy male volunteers with ages between 19 to 25 years (average age 20.7±1.8 years) were assessed in 4 sessions, viz. sheetali pranayama, sitkari pranayama, breath awareness and quiet lying, on 4 separate days, in random sequence. The axillary surface body temperature (TRUSCOPE II, Schiller, China) and metabolic variables (Quark CPET, COSMED, Italy) were recorded in 3 periods: before (5 minutes), during (18 minutes), and after (5 minutes), in each of the 4 sessions. The heat index was calculated in the before and after periods, based on recordings of ambient temperature and humidity. Data were analyzed using SPSS (Version 24.0).

RESULTS: Body temperature increased significantly during sheetali and sitkari (p<0.05, p<0.01; respectively) while it decreased after breath awareness and quiet lying down (p<0.01, p<0.001; respectively) when compared with respective post-exercise states. Oxygen consumption increased by 9.0% during sheetali (p<0.05) and by 7.6% during sitkari (p<0.01) while it decreased significantly during (p<0.05) and after (p<0.01) quiet lying down compared to respective pre-exercise states.

CONCLUSIONS: The results do not support the description of these yoga breathing practices as cooling. These yoga breathing practices may be used to induce a mild hypermetabolic state.

Keywords: Body Temperature Changes, Carbon Dioxide, Oxygen Consumption, Yoga, Adult, Body Temperature, Breathing Exercises, Energy Metabolism, Meditation, Muscle Stretching Exercises, Oxygen, Respiration, Respiratory Function Tests, Respiratory Mechanics, Temperature, young adult

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Medical Science Monitor Basic Research eISSN: 2325-4416
Medical Science Monitor Basic Research eISSN: 2325-4416