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Fig. 3. The effect of mean cardiac output during surface intervals
(
s, expressed as a
percentage of the nominal maximum cardiac output,
max) on (A) surface
intervals (ts) and (B) dive durations
(td). In this study
max was assumed to be 84.3
l min-1, corresponding to a maximum heart rate of 85 beats
min-1. Simulations were conducted at three levels of
hyperventilation (
n,
expressed as a percentage of maximum ventilation,
max=240 l
min-1); diamonds,
n=58%; squares,
n=75%; triangles,
n=92%.