Autonomic Regulation of Blood Pressure in Premature and Early Menopausal Women

Microneurography is a direct measurement of electrical activity of peripheral sympathetic nerves

Two arms of the baroreflex that will be tested in this study are sympathetic and cardiovagal. Static baroreflex is tested during baseline resting conditions and dynamic baroreflex is tested during Valsalva maneuvers.

Cold Pressor Test (CPT) and Upper extremity fatiguing contraction with post exercise circulatory occlusion (PECO) will be performed

Serum FSH, estrogen, progesterone, and testosterone will be measured