Table 1.

Haemodynamic variables

Variable	Rest	0.5 W/kg	1.0 W/kg
Heart rate (beats/min)	72 (4)	96 (4)*	109 (4)*†
Per cent increase from rest		36 (9)	56 (9)
Systemic venous index (l/min/m2)	2.5 (0.1)	3.4 (0.2)*	4.4 (0.4)*†
Per cent increase from rest		34 (8)	73 (11)
Pulmonary index (l/min/m2)	2.3 (0.1)	3.1 (0.2)*	3.9 (0.2)*†
Per cent increase from rest		33 (5)	73 (12)
Stroke index (ml/m2)	35 (27)	35 (3)	38 (3)
Per cent increase from rest		1.2 (7)	15 (8)
Mean blood pressure (mm Hg)	76 (2)	81 (2)*	88 (3)*†
Oxygen saturation (%)	95 (1)	94 (2)	94 (2)

Values are mean (SEM).

*p<0.05 v rest; †p<0.05 v 0.5 W/kg.