NDLI: Peak exercise oxygen uptake and left ventricular systolic and diastolic function and arterial mechanics in healthy young men

Content Provider	Springer Nature Link
Author	Palmieri, Vittorio Palmieri, Emilia Antonio Arezzi, Emma Innelli, Pasquale Sabatella, Maria Ferrara, Liberato Aldo Fazio, Serafi Celenta, Aldo
Copyright Year	2003
Abstract	Echocardiography can be used to estimate myocardial contractility by the assessment of the circumferential end-systolic stress-corrected left ventricular (LV) fractional shortening measured at midwall level (stress-corrected MWS). Whether stress-corrected MWS at rest predicts exercise peak oxygen uptake (peak V̇O2) is unknown. Also, it is not known whether the propagation rate of the early LV filling wave (E wave propagation rate, V̇ p), a new pre-load insensitive index of LV diastolic function, and echocardiographically assessed indices of arterial stiffness correlate to peak V̇O2. Accordingly, we performed echocardiographic studies and exercise tests with respiratory gas analysis in 15 young healthy male subjects (mean age 27 years, range 18–36). Neither stress-corrected-MWS (r=0.20, P=NS) nor ejection fraction (r=−0.05, P=NS) correlated significantly with peak V̇O2. Adjustment for age and resting heart rate had no effect on the results. In separate multiple regression models adjusting for standard covariates (age, LV size and heart rate), peak V̇O2 correlated with V̇ p (beta=0.98, P<0.01), as well as with E/A (beta=0.85, P<0.01), and with the isovolumic relaxation time (indicator of LV relaxation) (beta=−0.59, P<0.05). Arterial stiffness indices showed no significant relation to peak V̇O2. We conclude that in young healthy male subjects, resting myocardial contractility and arterial stiffness are not significant correlates of peak V̇O2, whereas LV diastolic function, and in particular V̇ p, influences the variability of peak V̇O2.
Starting Page	664
Ending Page	668
Page Count	5
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	91
Issue Number	5
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-12-03
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Left ventricle Function Arterial stiffness Exercise Peak oxygen consumption
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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