An improved method for measuring heart-rate variability: assessment of cardiac autonomic function.

@article{Weinberg1984AnIM,
  title={An improved method for measuring heart-rate variability: assessment of cardiac autonomic function.},
  author={Clarice R. Weinberg and Michael A. Pfeifer},
  journal={Biometrics},
  year={1984},
  volume={40 3},
  pages={855-61}
}
Heart rate oscillates in synchrony with respiration. Several methods have been employed to assess this 'sinus arrhythmia', as an index of autonomic nervous system function. This paper proposes a new, easily computed measure, R, which is relatively resistant to the major nonrespiratory sources of variation, including premature beats, heart-rate differences among subjects, and slow trends in heart rate over time within subjects. The method can also be used more generally in any context where… CONTINUE READING