Respiratory sinus arrhythmia and carotid baroreflex control of heart rate in endurance athletes and untrained controls.

@article{Reiling1988RespiratorySA,
  title={Respiratory sinus arrhythmia and carotid baroreflex control of heart rate in endurance athletes and untrained controls.},
  author={Marilyn Reiling and Douglas R. Seals},
  journal={Clinical physiology},
  year={1988},
  volume={8 5},
  pages={511-9}
}
The purpose of this study was to compare the magnitude of the respiratory sinus arrhythmia, an index of cardiac vagal tone, and carotid baroreflex control of heart rate in endurance-trained athletes (n = 12, aged 20 +/- 1 years, means +/- SE) and untrained control subjects (n = 12, aged 22 +/- 1 year). Average R-R interval (ECG) and its variability were determined at rest under controlled breathing conditions, and the changes in R-R interval in response to brief applications of suction (-10… CONTINUE READING

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