Table 2.

Plasma catecholamine responses to upright tilt in men and women during the two different menstrual phases

		Women (n= 11)
Variables		Early follicular phase	Mid-luteal phase	Men (n= 11)
Noradrenaline (pg ml−1)	Supine	176 ± 16	201 ± 13	207 ± 20
	60 deg Tilt5	372 ± 32*	371 ± 28*	338 ± 49*
	60 deg Tilt20	447 ± 39*	482 ± 46*	409 ± 52*
Adrenaline (pg ml−1)	Supine	29 ± 5	26 ± 7	29 ± 5
	60 deg Tilt5	51 ± 12	35 ± 6	52 ± 18
	60 deg Tilt20	57 ± 12*	54 ± 12*	99 ± 22*

Values are presented as means ±s.e.m.

^*P < 0.05 compared with supine within the group and the same menstrual phase in women.