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A, cardiovagal baroreflex sensitivity (BRS) assessed during early phase II and phase IV of the Valsalva manoeuvre. B, the slope of the linear relationship between R-R interval and systolic BP indicates cardiovagal BRS. C, the sensitivity during decreasing BP was not different between sexes and phases. D, however, it was greater in men than women of both phases during increasing BP. Values are means ±s.e.m. EFP, the early follicular phase; MLP, the mid-luteal phase.
