Reported clinical and experimental findings have shown that baroreflex control of heart rate
is attenuated in women compared with men. This study investigated whether the sexual
dimorphism in baroreflex function relates to the ability of the male hormone testosterone to
facilitate baroreflex responsiveness. Relative contributions of the vagal and sympathetic
autonomic components to testosterone modulation of baroreflex function were also
investigated. Baroreflex curves relating changes in heart rate to increases or decreases in …