Cardiovascular
Does breathing at your resonance frequency actually improve HRV and blood pressure?
Open access · cc by · source: Europe PMC
In 95 randomized students, 15 minutes of resonance-frequency breathing raised positive mood and LF/HF HRV and lowered PASAT systolic BP versus sitting quietly; RF+1 was in between.
How this study connects
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Study at a glance
- Design
- RCT — Three-arm lab RCT: 15 min resonance-frequency (RF) breathing vs RF+1 breath/min vs quiet sitting, then 8-min PASAT stressor and 10-min recovery.
- N
- N=95 · 95 undergraduates (60% female; mean age 20), randomized to RF, RF+1, or control.
- Population
- Healthy undergraduates without heart disease or heart-rate/blood-pressure medications.
- Outcome
- HRV (especially LF/HF), systolic/diastolic blood pressure, and mood during breathing, PASAT, and recovery.
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Inspect source passages
Does breathing at your resonance frequency actually improve HRV and blood pressure?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
95 participants (60% female, average age 20) were randomized to three groups.
A convenience sample of 95 participants (60% female, average age of 20) was recruited from undergraduate psychology classes using an online recruitment site and randomized into three experimental groups
RF uniquely increased positive mood after practice, F(2,92)=10.73, p<0.001.
individuals in the RF group had increased positive mood whereas the other groups did not, F (2, 92) = 10.73, p < 0.001, η = 0.19
Key findings
Groups matched at baseline. Only the RF group increased positive mood and LF/HF after practice. Both breathing groups lowered BP during practice, but only RF showed lower SBP during the PASAT. Higher post-practice LF/HF predicted lower PASAT SBP (β=−0.21).
Methodology
Randomized participants to breathe at individually determined RF, at RF+1 breath/min, or sit quietly for 15 min, then complete an 8-min PASAT and 10-min recovery while tracking HRV, BP, and mood.
Limitations
A 95-person student sample and a single 15-minute session cannot prove clinic HRVB courses change disease outcomes; time-domain HRV (SDNN/RMSSD) did not differ.
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