Researchers in India
The study was the work at the Indian Institute of Technology in Roorkee, in Uttrakhand, and is to be published in a forthcoming 2010 issue of the International Journal of Medical Engineering and Informatics.
Heart rate changeability is a measure of the beat-to-beat changes in heart rate. In healthy people it is high, while people with cardiac abnormalities generally have low HRV.
The autonomic nervous system controls heart rate by two routes: the sympathetic and parasympathetic nervous systems.
The sympathetic nervous system causes HRV to go up, while the parasympathetic discourages it. While working well together, the two make sure that the heart rate is stable but ready to respond to alters caused by eating, the fight or flight response, or encouragement, the researchers told the press.
Previous research suggests that HRV is also a sign of dynamic and increasing load. As a quantify of dynamic load, it responds to stress, such as while we are under pressure to make a composite decision quickly, our HRV drops.
As a marker of cumulative load, it declines with age, in contrast to heart rate which rarely changes considerably with age. Research proposes that regular physical activity (which also slows down the aging process), raises HRV, apparently by improving parasympathetic control which raises "vagal tone".
Many yoga practitioners believes that yoga improves health through regular practice that centers on inhalation, stretching, postures, relaxation and meditation.
For the study, the researchers examined the HRV spectra of the electrocardiograms (ECGs) of 42 healthy male yoga practitioners and 42 healthy male non-practitioners aged from 18 to 48 years. All participants were volunteers.
The researchers thought
that HRV spectral analysis is an important way of surveying heart health and how the heart is regulated. By glancing at different frequency bands of HRV in short term events.
For example, very low frequency (VLF) variations are related to temperature control changes. While low frequency crests are linked to sympathetic control and high frequency crests with parasympathetic control, explained by the researchers.
"There is spiraling of parasympathetic (vagal) control in subjects who habitually practice yoga, which is analytic of better autonomic control over heart rate and so a healthier heart."
The study was the work at the Indian Institute of Technology in Roorkee, in Uttrakhand, and is to be published in a forthcoming 2010 issue of the International Journal of Medical Engineering and Informatics.
Heart rate changeability is a measure of the beat-to-beat changes in heart rate. In healthy people it is high, while people with cardiac abnormalities generally have low HRV.
The autonomic nervous system controls heart rate by two routes: the sympathetic and parasympathetic nervous systems.
The sympathetic nervous system causes HRV to go up, while the parasympathetic discourages it. While working well together, the two make sure that the heart rate is stable but ready to respond to alters caused by eating, the fight or flight response, or encouragement, the researchers told the press.
Previous research suggests that HRV is also a sign of dynamic and increasing load. As a quantify of dynamic load, it responds to stress, such as while we are under pressure to make a composite decision quickly, our HRV drops.
As a marker of cumulative load, it declines with age, in contrast to heart rate which rarely changes considerably with age. Research proposes that regular physical activity (which also slows down the aging process), raises HRV, apparently by improving parasympathetic control which raises "vagal tone".
Many yoga practitioners believes that yoga improves health through regular practice that centers on inhalation, stretching, postures, relaxation and meditation.
For the study, the researchers examined the HRV spectra of the electrocardiograms (ECGs) of 42 healthy male yoga practitioners and 42 healthy male non-practitioners aged from 18 to 48 years. All participants were volunteers.
The researchers thought
that HRV spectral analysis is an important way of surveying heart health and how the heart is regulated. By glancing at different frequency bands of HRV in short term events. For example, very low frequency (VLF) variations are related to temperature control changes. While low frequency crests are linked to sympathetic control and high frequency crests with parasympathetic control, explained by the researchers.
"There is spiraling of parasympathetic (vagal) control in subjects who habitually practice yoga, which is analytic of better autonomic control over heart rate and so a healthier heart."
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