Key result
Paced breathing at 0.1Hz increases low-frequency HRV by ~25% compared to usual breathing.
Why the study?
The effects of paced breathing at specific respiration rates on heart rate variability according to Sasang Constitution were not well characterized.
Does paced breathing at specific respiration rates affect heart rate variability in healthy participants?
Does paced breathing at specific respiration rates affect heart rate variability in healthy participants?
Absolute Event Rate: 7.92% vs 6.36%
p-value: p=<0.0001
Paced breathing at 0.1Hz effectively modulates heart rate variability by increasing low-frequency oscillations and SDNN in healthy individuals.
Supports paced breathing for HRV enhancement in healthy adults; leaves open its role in disease management.
Objectives We observed what effects of Paced Breathing(PB) in specific respiration rate have on heart rate variability (HRV) according to Sasang Constitution.Methods HRV of 72 healthy participants in sitting position was recorded while they carried out usual breathing, 0.2Hz, 0.1Hz, and 0.05Hz PB each 5 minutes in consecutive order. Five minute of relaxation was permitted between each breathing. Finally, HRV indices were statictically analyzed of 32 participants (SOEUM: 11, SOYANG: 10, TAEEUM: 11) after data out of accord with respiration rate or outliers were excluded.Results and Conclusions According to respiration rates, there was no statistical significance of HRV among Sasang Constitution. Regardless of Sasang Constituion, 0.2Hz PB increased mean heart rate and decreased natural logarithmic low frequency(lnLF) oscillation of HRV without the change of natural logarithmic high frequency(lnHF), while 0.1Hz PB increased lnLF and standard deviation of N-N interval(SDNN), and slightly decreased lnHF without the change of mean heart rate. 0.05 Hz PB also showed the same effect as 0.1Hz PB, but was impracticable.
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Kim et al. (2016) studied Healthy (n=32). Paced breathing at 0.1Hz (6 breaths/minute) vs. Usual breathing was evaluated on Natural logarithmic low frequency (lnLF) of heart rate variability (p=<0.0001). Paced breathing at 0.1Hz significantly increased the natural logarithmic low frequency of heart rate variability compared to usual breathing (7.92 vs 6.36, p<0.0001) in healthy adults.
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