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Fig. 8. Recovery of cardiac function following 30 min of severe hypoxia, measured
as the percent recovery of maximum force by ventricular strips
[Gesser, 1977; open circles,
rainbow trout (N=5) and filled circles, carp (N=5)], or as
the percent recovery of
MAX in the present
study (open square, N=8). The workload during the hypoxic period was
similar between studies. The ventricular strips used by Gesser
(1977) were developing maximum
force, but at a contraction rate (0.2 Hz, 12 contractions
min–1) much lower than measured in vivo, whereas the
power output of the hearts used in the study was approx. one sixth of
maximum.
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