01 February 2004
Stroke volume variability and heart rate power spectrum in relation to posture changes in healthy subjects
Janusz Siebert, Piotr Drabik, Romuald Lango, Krzysztof SzyndlerMed Sci Monit 2004; 10(2): MT31-37 :: ID: 11579
Abstract
Background:Power spectrum analysis of heart rate variability (HRV) can be used to assess the state of sympathovagal balance-modulating sinus node activity. Stroke volume variability (SVV) probably reflects the dynamics of physiological control mechanisms over time.Material/Methods: Power spectrum HRV and SVV were simultaneously measured in 44 healthy men. The values of the HRV and SVV parameters were compared for the supine and upright body positions in three age groups (I: 20–40; II: 40–60; III: >60 years old). The total power (TP) of the very low (VLF:<0.05 Hz), low (LF: 0.05–0.15 Hz) and high (HF: 0.15–0.5 Hz) HRV and SVV frequency bands were measured. The LF/HF and lnLF/lnHF ratios for HRV and SVV were calculated.
Results: The upright position caused a significant decrease in HRV in the HF and lnHF bands and an increase in the LF/HF and lnLF/HF ratios in all groups. SVV analysis for the supine position revealed significant differences in lnTP and HF values (between groups I and II) and in lnHF values (between groups I and II and I and III). SVV analysis for the upright position revealed differences in lnTP (between groups I and II and I and III), lnVLF (between groups I and III and I and III), lnLF (between groups I and II and I and III) and lnHF (between groups I and II and I and III).
Conclusions: The combined analysis of HRV and SVV revealed different cardiovascular responses to postural stress in the three age groups considered.
Keywords: Analysis of Variance, Electrocardiography - methods, Heart Rate - physiology, Posture - physiology, Signal Processing, Computer-Assisted, Stroke Volume - physiology, Analysis of Variance, Electrocardiography - methods, Heart Rate - physiology, Posture - physiology, Signal Processing, Computer-Assisted, Stroke Volume - physiology
Editorial
01 April 2024 : Editorial
Editorial: Forty Years of Waiting for Prevention and Cure of HIV Infection – Ongoing Challenges and Hopes for Vaccine Development and Overcoming Antiretroviral Drug ResistanceDOI: 10.12659/MSM.944600
Med Sci Monit 2024; 30:e944600
In Press
08 Mar 2024 : Clinical Research
Evaluation of Foot Structure in Preschool Children Based on Body MassMed Sci Monit In Press; DOI: 10.12659/MSM.943765
15 Apr 2024 : Laboratory Research
The Role of Copper-Induced M2 Macrophage Polarization in Protecting Cartilage Matrix in OsteoarthritisMed Sci Monit In Press; DOI: 10.12659/MSM.943738
07 Mar 2024 : Clinical Research
Knowledge of and Attitudes Toward Clinical Trials: A Questionnaire-Based Study of 179 Male Third- and Fourt...Med Sci Monit In Press; DOI: 10.12659/MSM.943468
08 Mar 2024 : Animal Research
Modification of Experimental Model of Necrotizing Enterocolitis (NEC) in Rat Pups by Single Exposure to Hyp...Med Sci Monit In Press; DOI: 10.12659/MSM.943443
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952