Key result
A systematic review of 26 studies demonstrated that heart rate variability follows a circadian rhythm, characterized by a nighttime peak during the second half of the night.
Why the study?
Does heart rate variability follow a circadian rhythm?
Systematic Review (n=26)
Does heart rate variability follow a circadian rhythm?
This systematic review confirms that heart rate variability follows a circadian rhythm with a nighttime peak, though quantitative guidelines for short-term measurements are still lacking.
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Supports nocturnal timing for HRV monitoring; confirms circadian pattern and extends evidence for standardized protocols.
Sammito et al. (2016) conducted a systematic review in Heart rate variability (n=26). Heart rate variability (HRV) monitoring was evaluated on Circadian rhythm of HRV parameters. A systematic review of 26 studies demonstrated that heart rate variability follows a circadian rhythm, characterized by a nighttime peak during the second half of the night.
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