Table 1.

Baseline values for the early follicular and midluteal phases of the menstrual cycle

Variable	EF	ML	P Value
Estrogen, pg/ml	42±5	109±13*	0.003
Progesterone, ng/ml	2±0	9±3*	0.038
MSNA, bursts/min	8±1	11±1	0.254
SAP, mmHg	105±3	104±3	0.569
DAP, mmHg	66±1	65±2	0.549
MAP, mmHg	79±2	78±2	0.403
HR, beats/min	58±2	60±2	0.128

Values are means ± SE; n = 10 subjects unless noted. MSNA, muscle sympathetic nerve activity (n = 7); SAP, systolic arterial pressure; DAP, diastolic arterial pressure; MAP, mean arterial blood pressure; HR, heart rate; EF, early follicular; ML, midluteal.

^*P < 0.05 vs. corresponding EF value.