Table 1

Effect of mild increase in sustained acceleration (+Gz) on heart rate, stroke volume and cardiac output (adapted from DeHart RL and Davis JR, Fundamentals of aerospace medicine 41)

Parameter+2 Gz +3 Gz +4 Gz
Heart rate
(bpm)
+14+35+56
Stroke Index
(mL/stroke/m2)
−24−37−49
Cardiac output
(% change)
−7−18−22