Left ventricular response to exercise in regular runners and controls: A radionuclide evaluation

M. Ahmad, J. P. Dubiel

Research output: Contribution to journalArticle

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Abstract

Radionuclide angiography was performed during upright exercise to compare left ventricular function in nine regular runners to nine age-matched, healthy controls. Heart rate, blood pressure, left ventricular ejection fraction (LVEF), end diastolic volume index (EDVI), end systolic volume index (ESVI), and stroke volume index (SVI) were measured at rest and at 40%, 60%, 80%, and 100% of maximum work capacity (mean maximal workload [KPM ± SD] was 1,773 ± 157 in runners and 1,260 ± 324 in controls). The resting data of runners and controls were similar. There were no significant differences in heart rate, systolic blood pressure, and LVEF between runners and controls during exercise. SVI and EDVI were higher in runners during exercise (P < 0.05). ESVI was lower in controls at a 60% level of exercise (P < 0.05). The data indicate that an early and sustained increase in the diastolic volume of the left ventricle is important for enhanced cardiac performance of regular runners during exercise.

Original languageEnglish (US)
Pages (from-to)630-635
Number of pages6
JournalClinical Nuclear Medicine
Volume15
Issue number9
DOIs
StatePublished - Sep 21 1990

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ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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