| Autor: |
Jenni Koskela, Anna Tahvanainen, Antti Tikkakoski, Pauliina Kangas, Marko Uitto, Jari Viik, Mika Kähönen, Jukka Mustonen, Ilkka Pörsti |
| Rok vydání: |
2019 |
| Popis: |
Background Resting heart rate (HR) and its variability (HRV) reflect cardiac sympathovagal balance that can stimulated by head-up tilting. HRV is significantly influenced by the level of HR, but how much HRV offers additional information about cardiac autonomic tone than HR alone remains unresolved. We examined the relation of resting HR with short term HRV during passive head-up tilt.Methods Hemodynamics of 569 subjects without medications with direct cardiovascular effects and known cardiovascular diseases were recorded using whole-body impedance cardiography, continuous radial pulse wave analysis and electrocardiography based HRV analysis in supine and upright positions. For statistical analyses the study population was divided into tertiles of resting heart rate according to sexes.Results Higher low frequency to high frequency ratio (LF/HF) of HRV (reflecting sympathovagal balance) was associated with higher HR in supine (p |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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