ACTA UNIVERSITATIS PALACKIANAE OLOMUCENSIS GYMNICA ...

50 Acta Univ. Palacki. Olomuc., Gymn. 2004, vol. 34, no. 2TABLE 2Changes in selected functional parameters of SAHRV at intervals with spontaneous respiratory frequency during lying(interval T4) and sitting (interval T5)T4 spont. resp. T5 spont resp. Stat. sigParameter x – S x – S T4 : T5Spect. pow. VLF 969.42 1101.77 684.65 400.04Spect. pow. LF 1788.6 1685.13 1717.78 1660.45Spect. pow. HF 4705.7 4976.35 2561.35 2212.73 *Rel. sp. pow VLF 15.11 11.27 16.55 12.37Rel. sp. pow LF 24.08 19.18 34.16 25.38Rel. sp. pow HF 60.81 19.57 49.29 23.29Freq. VLF 24.17 8.32 24.29 8.17Freq. LF 111.46 28.73 101.37 32.86Freq. HF 241.15 73.7 223.07 82.85Rat. LF/HF 0.38 0.36 0.67 0.16R-R interval 1.1 0.17 0.99 0.15 **CCV LF 3.42 1.81 3.84 2.12CCV HF 5.73 2.96 4.75 2.09Total spect. pow. 7463.5 6592.97 4963.78 3106.21 *Resp. freq./min. 11.8 3.8 11.4 3.ICounted Fr. resp. 14.49 4.41 13.57 4.9Fig. 2Changes in dominant frequencies at frequency component zones of VLF, LF and HF during sitting with full yogarespiration (interval T6), with alternate respiration (interval T8), during kapalabhaty (interval T10); intervals T5, T7,T9 during spontaneous respiratory frequency300250mHz200150100Freq.VLFFreq. Frekq. LFFreq. Frekv. HF500T5 T6 T7 T8 T9 T10In all the following positions of sitting during spontaneousrespiration (positions T5, T7, T9) we foundsimilar disproportions between the observed respiratoryfrequency and the respiratory frequency calculated fromthe relation RvFr. (mHz) = Fr. R (min –1 ) × 0,0167 (Hz),(RvFr. – respiratory bound frequency regarded as vagusactivity in the frequency zone HF or LF, Fr.R – averagevalue of respiratory frequency) (TABLES 2–5, Fig. 2).The position of sitting with full yoga breathing (intervalT6) was characterised by a distinct slowdown of respiratoryrhythm of less than 9 cycles/min. and a simultaneousenhancement of respiratory volume. Calculated respiratoryfrequency in these positions assumed just the relationshipto dominant activity only, in the zone of frequency componentLF. In the literature, the dominant frequency in thiszone is related to baroreceptor activity. In our researchthere is just a frequency shift of frequency bound to respirationfrom the HF zone into the frequency zone of LFdepending on the respiration frequency. The dominantfrequency bound to respiration that we regard as vagus