eCite Digital Repository

Exercise aortic stiffness: Reproducibility and relation to end-organ damage in men

Citation

Keith, LJ and Rattigan, S and Keske, MA and Jose, M and Sharman, JE, Exercise aortic stiffness: Reproducibility and relation to end-organ damage in men, Journal of Human Hypertension, 27, (8) pp. 516-522. ISSN 0950-9240 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Macmillan Publishers Limited All rights reserved.

DOI: doi:10.1038/jhh.2013.5

Abstract

Resting aortic stiffness (pulse wave velocity; aortic PWV (aPWV)) independently predicts end-organ damage and mortality. Exercise haemodynamics have been shown to unmask cardiovascular abnormalities, otherwise undetectable at rest, but the response of aPWV to exercise has never been examined. This study aimed to develop a technique to measure exercise aPWV, determine reproducibility and relation to subclinical end-organ damage with aging. Healthy younger (n=17, 30±8 years) and older (n=18, 54±8 years) untreated men underwent cardiovascular assessment at rest and during low intensity semirecumbent cycling. Tonometry was used to assess aPWV and central blood pressure (BP). All participants underwent 24 h ambulatory BP (ABP) monitoring. Kidney function was assessed by estimated glomerular filtration rate (eGFR). Fifteen participants had testing repeated within 28±18 days. Exercise aPWV had good reproducibility (mean difference=-0.35±0.61 m s -1, intraclass correlations=0.874, P<0.001) and was increased 26% above resting values in younger men (5.8±0.9 vs 7.3±1.6 m s -1, P<0.001) and 19% above resting values in older men (6.3±1.0 vs 7.4±0.9 m s -1, P<0.001). Exercise, but not resting, aPWV was significantly correlated with eGFR in older men (r=-0.633, P=0.005), and this was maintained after correction for age, body mass index and daytime systolic ABP (r=-0.656, P=0.008). Conversely, in younger men there was no significant association between eGFR and aPWV either at rest (r=-0.031, P=0.906) or during exercise (r=-0.117, P=0.655). Exercise aPWV is reproducible and significantly associated with kidney function in healthy older men. Further studies to determine the physiology and clinical relevance of raised exercise aPWV are warranted. © 2013 Macmillan Publishers Limited All rights reserved.

Item Details

Item Type:Refereed Article
Keywords:Aorta, blood pressure, arterial stiffness, ambulatory, kidney function
Research Division:Medical and Health Sciences
Research Group:Cardiorespiratory Medicine and Haematology
Research Field:Cardiology (incl. Cardiovascular Diseases)
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Cardiovascular System and Diseases
Author:Keith, LJ (Miss Laura Keith)
Author:Rattigan, S (Professor Stephen Rattigan)
Author:Keske, MA (Dr Michelle Keske)
Author:Jose, M (Professor Matthew Jose)
Author:Sharman, JE (Professor James Sharman)
ID Code:87088
Year Published:2013
Web of Science® Times Cited:7
Deposited By:Menzies Institute for Medical Research
Deposited On:2013-11-07
Last Modified:2016-12-15
Downloads:1 View Download Statistics

Repository Staff Only: item control page