Expresso coffee increases parasympathetic activity in young, healthy people

@article{Monda2009ExpressoCI,
  title={Expresso coffee increases parasympathetic activity in young, healthy people},
  author={Marcellino Monda and Andrea Viggiano and Claudia Vicidomini and Alessandro Viggiano and T. Iannaccone and Domenico Tafuri and Bruno De Luca},
  journal={Nutritional Neuroscience},
  year={2009},
  volume={12},
  pages={43 - 48}
}
Abstract Caffeine induces modifications of activity of the autonomic nervous system. This study analyzed the effect of a cup of espresso coffee on the heart rate variability (HRV) power spectral analysis, which is a method providing evaluation of the sympathetic and parasympathetic discharge. In young, healthy sedentary subjects (10 male, 10 female; aged 25–30 years), the HRV-power spectrum was evaluated over a period of 150 min after the administration of espresso coffee (caffeine, 75 mg) or… 
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Caffeine ingestion increases resting cardiac autonomic modulation and accelerates post-exercise autonomic recovery after a bout of anaerobic exercise in recreationally active young men.
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