Stancák A, Kuna M, Novák P, Srinivasan M A, Dostálek C, Vishnudevananda S
Institute of Physiological Regulations, Czechoslovak Academy of Sciences, Prague.
Physiol Res. 1991;40(3):345-54.
Yogic high-frequency respiration--kapalabhati (KB)--was studied in 24 subjects from a point of rhythmicity. Respiratory movements, blood pressure and R-R intervals of ECG were recorded in parallel and evaluated by spectral analysis of time series. Respiratory signals during KB were modulated by 0.1 Hz rhythm in 82% of experiments. This component was also present in R-R intervals and blood pressure during KB. Frequency (0.2-0.3 Hz) was observed in 67% of respiratory records. The presence of the component 0.2-0.3 Hz in respiration was dependent on resting respiratory frequency. This frequency component was reduced in R-R intervals but increased in blood pressure during kapalabhati as compared to that at rest. The occurrence of both frequency components in respiration during KB supports the hypothesis about the integrative role of cardiovascular and respiratory rhythms in physiological states characterized by altered respiratory frequency.
从节律性角度对24名受试者进行了瑜伽高频呼吸——风箱式呼吸（KB）的研究。同时记录呼吸运动、血压和心电图的R-R间期，并通过时间序列的频谱分析进行评估。在82%的实验中，KB期间的呼吸信号由0.1赫兹节律调制。该成分在KB期间的R-R间期和血压中也存在。在67%的呼吸记录中观察到频率（0.2 - 0.3赫兹）。呼吸中0.2 - 0.3赫兹成分的存在取决于静息呼吸频率。与静息时相比，在风箱式呼吸期间，该频率成分在R-R间期降低，但在血压中升高。KB期间呼吸中这两种频率成分的出现支持了关于心血管和呼吸节律在以呼吸频率改变为特征的生理状态中的整合作用的假说。
