Table 1.

Blood pressure and heart rate during sitting, supine, HDT, HDT with LBNP at −25 mmHg, and LBNP at −50 mmHg conditions

	Sitting	Supine	HDT	HDT + LBNP(25)	HDT + LBNP(50)
Blood pressure, mmHg*	87 ± 20	84 ± 20	82 ± 19	76 ± 28	85 ± 11
Heart rate, beats/min	68 ± 8	59 ± 8	59 ± 9	61 ± 6	74 ± 10

Values are means ± SD. HDT, head-down tilt; LBNP, lower-body negative pressure; HDT + LBNP(25), HDT with −25 mmHg pressure; HDT + LBNP(50), HDT with −50 mmHg pressure.

^*Reported as mean arterial pressure. Blood pressure and heart rate did not change significantly across all test conditions.