Training-induced bradycardia and intrinsic heart rate in rats

@article{Nylander1982TraininginducedBA,
  title={Training-induced bradycardia and intrinsic heart rate in rats},
  author={Eva Nylander and Karl Sigvardsson and {\AA}sa Kilbom},
  journal={European Journal of Applied Physiology and Occupational Physiology},
  year={1982},
  volume={48},
  pages={189-199}
}
After 10 weeks of treadmill training, female Sprague-Dawley rats had developed a bradycardia at exercise on submaximal work loads. This bradycardia was also present after autonomic denervation and in isolated perfused heart preparations. The heart weight/body weight ratio was increased in these trained animals compared to untrained littermates. Sympathectomized, trained rats developed the same degree of cardiac hypertrophy, but their heart rate after denervation and in the isolated heart was… CONTINUE READING

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