what is the effect of frequency of sound on heart?
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The blood pressure and heart rates were recorded before the production of sound. Then the source of sound of frequency 3500 Hz and intensity level 30 dB was switched on. ... 15 subjects showed less than 5% increase in systolic as well diastolic blood pressure. There was no significant change observed in heart rate.
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Brainliest please bro/sis. I will be very thankful:))
Hope it helps:)
Brainliest please bro/sis. I will be very thankful:))
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