Central Frequency of Low Frequency Component of HRV Estimates Sympathetic Activity during Dynamic Exercise, Standing and Paced Breathing Maneuvers
| Autor: | Salvador Carrasco-Sosa, Alejandra Guillen-Mandujano |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Supine position Controlled breathing business.industry Diastole Healthy subjects Sympathetic activity 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Internal medicine Cardiology Medicine business 030217 neurology & neurosurgery Paced breathing |
| Zdroj: | CinC |
| ISSN: | 2325-887X |
| DOI: | 10.22489/cinc.2020.025 |
| Popis: | In 25 healthy subjects we assessed the effects of the maneuvers supine position (S), dynamic exercise (DE), standing (ST), controlled breathing (CB) and DE recovery (DER) on the time-courses of’ central frequencies and powers of the low and high frequency components of RR ( CF LF RR , pLF RR ’ pHF RR ), systolic ( CF LFsp,pLF sp ) and diastolic ( CF LF DP , pLF DP ) pressures, estimated by a time-frequency distribution, and on the pLF RR /pHF RR and CF LF RR /pHF RR ratios. Relative to S, significant mean values changes (p CF LF RR and pHF RR increased in CB and decreased distinctively in ST and DE; CF LF RR /pHF RR decreased in CB and increased distinctively in ST, DE and DER; pLF RR only decreased pronouncedly in DE; mean RR (RR m ) decreased in CB, ST, DE and DER. pLF RR /pHF RR means were similar in ST, DE and DER. In S, CB, ST and DER, CF LF RR was greater (p CF LF DP and CF LF SP · Correlations of CF LF RR with pHF RR and RR m were: 0.78±0.07 and 0.64±0.12 respectively. Our findings that CF LF RR : estimates the sympathetic activity (SA) level of each maneuver, is strongly correlated with pHF RR , improves the estimating capability of the ratio in DE, and is greater than CF LF DP , support that CF LF RR is a trustable SA indicator, relevantly in DE, and that the modulatory frequency of the cardiac sympathetic branch is greater than the vasomotor one. |
| Databáze: | OpenAIRE |
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