Key result
Passive tilt significantly decreased the centre frequency of the low frequency component of the heart rate variability power spectrum from 0.10 to 0.087 Hz.
Why the study?
Does passive tilt affect the power spectrum of heart rate variability in healthy subjects?
Observational
Does passive tilt affect the power spectrum of heart rate variability in healthy subjects?
Absolute Event Rate: 0.087% vs 0.1%
Passive tilt causes a significant decrease in the centre frequency of the low frequency component of heart rate variability, primarily driven by blood pressure variations.
Requires caution interpreting LF HRV spectra during tilt in healthy subjects; leaves open clinical relevance in patients.
The effects of passive tilt on the power spectrum of heart rate variability was studied in healthy subjects. A significant decrease from 0.10 to 0.087 Hz of the centre frequency of the low frequency component of the power spectrum was observed with tilt. In order to better understand the nature of this frequency shift, a multivariate model of the effects of respiration and blood pressure on heart rate was applied to data from one individual. The contribution to the LF component of the HRV power spectrum by blood pressure variations was found to be responsible for the frequency shift.
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Raymond et al. (2002) conducted an observational in Healthy. Passive tilt vs. Baseline was evaluated on Centre frequency of the low frequency component of the power spectrum of heart rate variability. Passive tilt significantly decreased the centre frequency of the low frequency component of the heart rate variability power spectrum from 0.10 to 0.087 Hz.
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