Milatz F et al. | ||||
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Zusammenhang zwischen maximaler Sauerstoffaufnahme und arterieller Gefäßsteifigkeit in Ruhe und während eines Cold Pressure Tests // Relationship between Maximal Oxygen Consumption and Arterial Stiffness at Rest and during Cold Pressor Stress
Testing Journal für Kardiologie - Austrian Journal of Cardiology 2016; 23 (1-2): 14-19 Volltext (PDF) Summary Fragen zum Artikel Abbildungen Keywords: Arterielle Gefäßsteifigkeit, Augmentationsindex, Cold Pressure Test, maximale Sauerstoffaufnahme, Pulswellengeschwindigkeit, arterial stiffness, augmentation index, Cold Pressure Test, maximal oxygen consumption, pulse wave velocity Introduction: The favorable influence of endurance exercise on arterial stiffness (AS) is widely known. It is also well accepted that stress contributes the development of arterial stiffness and predict the risk of cardiovascular events. The aim of this study was to investigate the relationship between maximal oxygen consumption (VO2max) and arterial stiffness (AS), quantified by aortic pulse wave velocity (aPWV) and augmentation index (AIx), at rest, but in par- ticular during stress testing. Methods: 32 recreationally active men completed a cardiopulmonary exercise testing. aPWV and AIx were measured non-invasively at rest and during a 2 minute cold pressor test (CPT) using Mobil-O-Graph®. After applying partial correlation analysis, the cohort was divided into tertiles of VO2max. Thereafter, ANCOVAs adjusted for age, body mass index and height were performed. Results: In the total cohort VO2max showed negative correlations with AIx (r = –0.49, p = 0.006) at rest and with AIx (r = –0.51, p = 0.005) as well as aPWV (r = –0.55, r = 0.001) stress test-related. Subjects in the highest tertile of VO2max showed significantly lower stiffness parameters than subjects in the lowest tertile. This was true for AIx (1.1% vs 10.2%, p = 0.012) at rest and for AIx (3.3% vs 13.9%, p = 0.015) as well as aPWV (6.0 m/s vs 6.9 m/s, p = 0.006) during CPT, respectively. Discussion: The study provides evidence for an inverse relationship between VO2max and stress test-related AS. Furthermore higher VO2max values seem to be associated with more favorable effects on arterial compliance during stress testing irrespective of known factors influencing AS.
Kurzfassung: Einleitung: Ausdauertraining besitzt
bekanntermaßen günstige Effekte auf die
arterielle Gefäßsteifigkeit (AS). Evidenzen aus
der kardiovaskulären Forschung sprechen jedoch
dafür, dass das kardiovaskuläre Risiko insbesondere
durch die Gefäßcompliance während
körperlicher und psychischer Belastungen charakterisiert
ist. Ziel der vorliegenden Studie war
zu untersuchen, ob für die AS, quantifiziert durch
die aortale Pulswellengeschwindigkeit (aPWV)
und den Augmentationsindex (AIx), insbesondere
unter stresstestbezogenen Bedingungen ein
Zusammenhang zur maximalen Sauerstoffaufnahme
(VO2max) besteht. |