Elevated variance in heart rate during slow-wave sleep after late-night physical activity.

@article{Bulckaert2011ElevatedVI,
  title={Elevated variance in heart rate during slow-wave sleep after late-night physical activity.},
  author={Arnoud Bulckaert and Vasileios Exadaktylos and Bart Haex and Elke de Valck and Johan Verbraecken and Daniel Berckmans},
  journal={Chronobiology international},
  year={2011},
  volume={28 3},
  pages={282-4}
}
This study investigates the effect of mild physical activity before bedtime on the sleep pattern and heart rate during the night. Nine healthy subjects underwent a habituation night, a reference night, and a physical induction night. The physical induction night did not alter the sleep pattern. Physical activity before bedtime resulted in higher heart rate variance during slow-wave sleep. The low-frequency/high-frequency component (LF/HF) ratio during slow-wave sleep in the physical induction… CONTINUE READING