Table 4.

Net twist and net untwist data at rest and lower body negative pressure (LBNP) at −20 mmHg and −40 mmHg. Net untwist was defined as: apical (rotation at ES – rotation at MVO) minus basal (rotation at ES – rotation at MVO)

(n = 11)	Rest	LBNP −20 mmHg	LBNP −40 mmHg	P-value
Net twist, ES, °	13.4 (11.9, 17.3)	15.2 (11.5, 18.1)	16.5 (13.4, 21.7)*,†	0.003
Net twist, MVO, °	8.0 (4.7, 11.2)	6.3 (1.4, 12.6)	6.6 (2.6, 11.4)	0.31
Net untwist, °	5.2 (4.7, 7.2)	6.7 (5.2, 9.7)*	9.2 (6.0, 11.4)*	<0.001

ES, end-systole; MVO, mitral valve opening.

Values are Median (IQR).

*P < 0.05 versus rest, ^†P < 0.05 versus LBNP −20 mmHg.