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РЖ ВИНИТИ 34 (BI23) 96.12-04М2.344

Voluntary control of breathing does not alter vagal modulation of heart rate [Text] / Abhijit R. Patwardhan [et al.] // J. Appl. Physiol. - 1995. - Vol. 78, N 6. - P2087-2094 . - ISSN 8750-7587
Перевод заглавия: Свободный контроль за дыханием не изменяет вагусной модуляции частоты сердечных сокращений
Аннотация: To investigate whether metronomic breathing complicates the interpretation of heart rate spectra by altering vagal modulation, we recorded the electrocardiogram and respiration from eight volunteers during three breathing trials of 10 min each: 1) spontaneous breathing (mean rate of 14.4 breaths/min);2) breathing to a metronome at the rate of 15, 18, and 21 breaths/min for 2, 6, and 2 min, respectively; and 3) breathing to a metronome at the rate of 18 breaths/min for 10 min. Data were also collected from eight volunteers who breathed spontaneously for 20 min and breathed metronomically at each subject's mean spontaneous breathing frequency for 20 min. Results from the three 10-min breathing trials showed that heart rate power in the respiratory frequency region was smaller during metronomic breathing than during spontaneuos breathing. This decrease could be explained fully by the higher breathing frequencies used during trials 2 and 3 of metronomic breathing. When the subjects breathed metronomically at each subject's mean breathing frequency, the heart rate powers during metronomic breathing were similar to those during spontaneous breathing. Our results suggest that vagal modulation of heart rate is not altered and vagal tone is not enhanced during metronomic breathing

ГРНТИ	34.39.29

ВИНИТИ 341.39.29.11.49.09
Рубрики: ЧАСТОТА СЕРДЕЧНЫХ СОКРАЩЕНИЙ
ВАГУСНЫЕ МОДУЛЯЦИИ
ДЫХАНИЕ
СПЕКТРАЛЬНЫЙ АНАЛИЗ

Доп.точки доступа:
Patwardhan, Abhijit R.; Evans, Joyce M.; Bruce, Eugene N.; Eckberg, Dwain L.; Knapp, Charles F.

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