Heart failure and infrasound
Type of Spiritual Experience
Background paper to show link between heart problems and high intensity infrasound
A description of the experience
Acta Med Scand. 1985;217(5):531-5. Blood pressure changes in man during infrasonic exposure. An experimental study. Danielsson A, Landström U.
Twenty healthy male volunteers were exposed to infrasound in a pressure chamber especially designed for the experiments.
The effects on blood pressure, pulse rate and serum cortisol levels of acute infrasonic stimulation were studied in a series of different experiments.
Varying frequencies (6, 12, 16 Hz) and pressure levels (95, 110, 125 dB(lin)) were tested.
Significantly increased diastolic and decreased systolic blood pressures were recorded without any rise in pulse rate.
The increase in diastolic blood pressure reached a maximal mean of about 8 mmHg after 30 min exposure.
The results suggest that acute infrasonic stimulation induces a peripheral vasoconstriction with increased blood pressure, previously shown to occur in conjunction with industrial noise.
Chronic long-term exposure to environmental infrasound may be of importance for the development of essential hypertension in predisposed individuals.
The source of the experiencePubMed
Concepts, symbols and science items
Activities and commonsteps
Heart failure and coronary heart disease