The immediate effect of paced breathing פולינה גינזבורג 18-1
The immediate effect of paced breathing with biofeedback on heart rate variability in patients at
the sub-acute post stroke phase.
Ginsburg Polina, Bartur Gadi, Peleg Sara, Katz-Leurer Michal
Methods: Included were 8 patients within one month post stroke. Measures: A12-lead Digital Holter ECG recorder was used; heart rate (HR), time, and frequency heart rate variability (HRV) parameters were calculated. The ECG was continuously monitored throughout 15 minutes of rest while breathing at a comfortable rate, and then during a Biofeedback breathing session, when patients were guided to breathe at as low a rate as possible, up to 6 breaths per minute.
Results: At rest, the median breathing rate was 14.3 bpm (range: 13.5-15.8). During paced breathing, the breathing rate decreased significantly, to 8.5 bpm (range: 7.5-11.7) (p-value = .012). Median HR decreased by 11 bpm (range: 3-16 bpm) (p = .012), and the median value for the normalized high frequency HRV was marginally significant (p = .08).
Keywords: stroke, autonomic system, heart rate variability, paced breathing