Maximum heart rate responses to exercise and isoproterenol in the trained rat.

@article{Bolter1988MaximumHR,
  title={Maximum heart rate responses to exercise and isoproterenol in the trained rat.},
  author={C. P. Bolter and K. Atkinson},
  journal={The American journal of physiology},
  year={1988},
  volume={254 5 Pt 2},
  pages={R834-9}
}
Male rats were assigned to light (C) or strenuous (T) running programs. Both groups ran at 30 m/min, 8% elevation. Over 16 wk, T and C completed 2,939 +/- 72 and 507 +/- 7 min (mean +/- SE). In a graded running test, maximum exercise heart rates for T and C were 542 +/- 7 and 554 +/- 6 beats/min (P greater than 0.05). Heart rates elicited by maximum effective concentrations of isoproterenol (ISO) in vivo and in vitro were 483 +/- 8 and 489 +/- 11 beats/min for T and 499 +/- 5 and 502 +/- 5… CONTINUE READING

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