Modulation of cold pressor-induced stress by shavasan in normal adult volunteers

Indian Journal of Physiology and Pharmacology.

 2002 Jul;46(3):307-12.

Madanmohan,

Udupa K, Bhavanani AB, Krishnamurthy N, Pal GK.

Department of Physiology, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, 605 006.

 

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Shavasan is known to enhance one’s ability to combat stressful situations. The present study was planned to determine if shavasan could modulate the physiological response to stress induced by cold pressor test (CPT) and the possible mechanisms involved. Ten normal adults were taught shavasan and practiced the same for a total duration of seven days. RR interval variation (RRIV), deep breathing difference (DBD), and heart rate, blood pressure & rate-pressure-product (RPP) response to CPT were measured before and immediately after shavasan. Shavasan produced a significant increase in DBD and an appreciable but statistically insignificant increase in RRIV suggesting an enhanced parasympathetic activity. Significant blunting of cold pressor-induced increase in heart rate, blood pressure and RPP by shavasan was seen during and even five minutes after CPT suggesting that shavasan reduces the load on the heart by blunting the sympathetic response. It is concluded that shavasan can enhance one’s ability to withstand stress induced by CPT and this ability can be achieved even with seven days of shavasan training.

 

Recovery from stress in two different postures and in Shavasana

Indian Journal of Physiology and Pharmacology.

1998 Oct;42(4):473-8.

Bera TK, Gore MM, Oak JP.

Scientific Research Department, Kaivalyadhama S.M.Y.M. Samiti, Lonavla.

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The recovery from induced physiological stress in Shavasana (a yogic relaxation posture) and two other postures (resting in chair and resting supine posture) was compared. Twenty one males and 6 females (age 21-30 yrs) were allowed to take rest in one of the above postures immediately after completing the scheduled treadmill running. The recovery was assessed in terms of Heart Rate (HR) and Blood pressure (BP). HR and BP were measured before and every two minutes after the treadmill running till they returned to the initial level. The results revealed that the effects of stress was reversed in significantly (P < 0.01) shorter time in Shavasana, compared to the resting posture in chair and a supine posture.

Blood Pressure High BP Hypertension Yoga Cure

Hypertension or high blood pressure, is the most common disease affecting the heart and blood vessels.

What is blood pressure?

Our heart beats 72 times in a minute. With each beating of heart about half a cup of blood is pumped into arteries.

Hyper means increased and tension means pressure. Hypertension means higher pressure of blood.

The circulatory system plays a vital role in the nourishment of tissues. Elements necessary for nourishment of tissues are carried to them by blood. After circulating in the whole body, blood returns to get purified to the heart through the veins.

To complete above process needs pressure so, the pressure works in the process of blood circulation on so long a journey through all the arteries and veins is called as Blood Pressure. Variation in the blood pressure influences the homoeostasis.

During heart contraction blood pressure increases, known as ‘Systolic Blood Pressure’. During heart relaxation blood pressure reduces known, as ‘Diastolic Blood Pressure’.

Normal B.P. (in adult) 120/ 80 mm of mercury pressure. But when B.P. increases to 140/90 and above and remains at that level, then this increased Wood pressure is known as “Hypertension”

As a person grows older, generally blood pressure goes on increasing. As the contraction of arteries increases, the arteries lose elasticity.

Normally the reduction of arteriolar lumen increases the total peripheral resistance resulting in the hypertension. Hypertension causes a variety of problems and heart is affected badly. Heart has to work powerfully to pump the blood in the arteries. With time, however, changes in the organization and properties of myocardial cells occur. Due to unexpected pressure, fluids do not come out of the kidneys in required proportion, it decreases working capacity of kidneys. Toxic fluid in the form of urea gets collected in the blood. The chemical reaction that takes place thus raises possibilities of many a different types of defects in the body.

To combat this situation, kidneys secrete rennin, which further raises the blood pressure and aggravates the problem. The reduced blood supply to the kidney may lead to death of several kidney cells.

The presence of hypertension also enhances the development of atherosclerosis and heart attacks.  high B.P. damages the internal walls of the arteries. With increase in the level of cholesterol, triglycerides, phospholipids density of blood increases. It goes on sticking to the walls of the arteries. In such a condition severe strain is imposed on the cerebral arteries that supply the brain. This makes them weakened, which ultimately ruptures, causing brain haemorrhage.

Can person having B.P. practice yoga asanas (yoga posture)?

Yes, it is recommended to  practice Asanas except Shirsasan. All the Asanas can be practiced without any fear.

Initiate with the special Asanas and Pranayama that can offer help readily are:

Beside the above mentioned asana and pranayama practice of yoga nidra, concentration and meditation gives the best result.

Therapeutics Yoganidra

YogaNidra is a state of conscious Deep Sleep. YogaNidra brings an incredible calmness, quietness and clarity. It has great Therapeutics values.

 

Kindly find following research papers in category Research

Retardation of coronary atherosclerosis with yoga lifestyle intervention.

Lipid profile of coronary risk subjects following yogic lifestyle intervention.

Modulation of cardiovascular response to exercise by yoga training.

The effects of unilateral forced nostril breathing on the heart.

NWPC_Hypertension_Infographic

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