EDMUND JACOBSON, Ph.D., M.D., F.A.C.P.
In previous studies1, 2 systolic and diastolic pressure were measured in man, lying at rest, at intervals beginning about 15 minutes after reclining, while potentials were recorded (in microvolts within the frequency rate, 30-4000) from electrodes in one or more of the following groups: the flexor muscle in the right upper arm, the left quadriceps femoris muscles, the abdominal muscles, muscles in the region of the right eye. Apart from fall of pressure following soon after and attributable to change to the recumbent position, there were indications that the blood pressure variable is a function of skeletal muscular tension. Prolonged
JACOBSON E. VARIATION OF BLOOD PRESSURE WITH SKELETAL MUSCLE TENSION AND RELAXATION. II. THE HEART BEAT1. Ann Intern Med. ;13:1619–1625. doi: 10.7326/0003-4819-13-9-1619
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Published: Ann Intern Med. 1940;13(9):1619-1625.
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