Effects of exercise on left ventricular diastolic performance in trained athletes

Nixon, J.V.; Wright, A R; Porter, Thomas R.; Roy, Valerie; Arrowood, James A.

doi:10.1016/0002-9149(91)90414-g

Cited by 52 publications

(45 citation statements)

References 17 publications

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“…We could not confirm the findings of Nishimura at al, 9 who found significantly depressed resting systolic LV function in 40-to 49-year-old cyclists, or the findings of Miki et al, 10 who demonstrated a decreased ratio of early to atrial filling velocities in 40-to 60-year-old cyclists. Our findings are, however, in agreement with other previous Doppler echocardiographic studies in cylists [47][48][49][50] and other athletes 43,49,[51][52][53][54][55][56][57][58] that demonstrated normal or enhanced LV function parameters. To the best of our knowledge, our study is the first to use MRI in the assessment of LV systolic and diastolic function in the athlete's heart.…”

Section: Diastolic Functionsupporting

confidence: 93%

Functional and Metabolic Evaluation of the Athlete’s Heart By Magnetic Resonance Imaging and Dobutamine Stress Magnetic Resonance Spectroscopy

et al. 1998

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Background-The question of whether training-induced left ventricular hypertrophy in athletes is a physiological rather than a pathophysiological phenomenon remains unresolved. The purpose of the present study was to detect any abnormalities in cardiac function in hypertrophic hearts of elite cyclists and to examine the response of myocardial high-energy phosphate metabolism to high workloads induced by atropine-dobutamine stress. Methods and Results-We studied 21 elite cyclists and 12 healthy control subjects. Left ventricular mass, volume, and function were determined by cine MRI. Myocardial high-energy phosphates were examined by 31 P magnetic resonance spectroscopy. There were no significant differences between cyclists and control subjects for left ventricular ejection fraction (59Ϯ5% versus 61Ϯ4%), left ventricular cardiac index (3.4Ϯ0.4 versus 3.4Ϯ0.4 L ⅐ min Ϫ1 ⅐ m Ϫ2 ), peak early filling rate (562Ϯ93 versus 535Ϯ81 mL/s), peak atrial filling rate (315Ϯ93 versus 333Ϯ65 mL/s), ratio of early and atrial filling volumes (3.0Ϯ1.0 versus 2.6Ϯ0.6), mean acceleration gradient of early filling (5.2Ϯ1.4 versus 5.8Ϯ1.9 L/s 2 ), mean deceleration gradient of early filling(Ϫ3.1Ϯ0.9 versus Ϫ3.2Ϯ0.7 L/s

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Section: Diastolic Functionsupporting

confidence: 93%

Functional and Metabolic Evaluation of the Athlete’s Heart By Magnetic Resonance Imaging and Dobutamine Stress Magnetic Resonance Spectroscopy

et al. 1998

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“…16 The Tei index has been found to be a strong predictor of mortality in patients with dilated cardiomyopathy. 13 In the present study, there were no observable changes in LVEF as an index of systolic function and although improved diastolic function by physical training has been reported, [17][18][19] we could not clarify an improvement indeceleration time as an index of diastolic function. We also could not clarify why the Tei index improved.…”

Section: Discussioncontrasting

confidence: 60%

Effects of Exercise Training on Left Ventricular Function Evaluated by the Tei Index in Patients With Myocardial Infarction

Ueshima

Suzuki

Nasu

et al. 2005

Circ J

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everal studies have reported the influence of exercise training on left ventricular (LV) contractility in patients with myocardial infarction (MI), although consensus has not been obtained; no changes in resting contractility were observed, 1-4 improvement was achieved only in patients with cardiac dysfunction, 5 deterioration was observed only in patients with cardiac dysfunction, 6 LV ejection fraction (LVEF) during exercise improved. 7,8 The present study was conducted to investigate the influence of exercise training on LV function and exercise tolerance in patients with acute MI (AMI) using a new index of cardiac function, the Tei index. The Tei index is an echocardiographic/Doppler index of the combined LV systolic and diastolic function. We investigated the correlation between the Tei index, LVEF as a marker for systolic function, and exercise capacity in patients with AMI who were enrolled in a cardiac rehabilitation program. MethodsThe study population comprised 53 consecutive patients (36 males, 17 females; mean age: 65±10 years) admitted to hospital for AMI. Patients were excluded if they had some risks associated with exercise training, such as coronary artery disease with residual myocardial ischemia and severe aortic stenosis, if they had orthopedic or neuromuscular or if they had frequent ectopic beats or atrial fibrillation. An anterior wall infarction developed in 45% of the patients, 6% of the patients had a history of old MI and 60% of the patients underwent reperfusion therapy in the acute stage. Mean LVEF in the acute stage was 52%. According to the Killip's classification, 94% of the patients were I or II.The in-hospital and outpatient cardiac rehabilitation program for patients with AMI was either a 2-or 3-week program according to the Guideline for Rehabilitation of Cardiovascular Patients and was supported by a research grant for cardiovascular diseases (5C-3) from the Ministry of Health and Welfare from 1993 until 1995 (Director Muneyasu Saito). Exercise training, which was prescribed on the basis of 90% intensity of the anaerobic threshold, was performed 2-3 times per week for 6 months. Acutestage exercise training during admission was performed under monitoring and chronic-stage exercise therapy was continued under monitoring at the outpatient clinic or unsupervised at home. In principle, subjects maintained their medications throughout the study. Prior to participation, informed consent was obtained from each patient.Cardiopulmonary exercise testing (CPX) and 2-dimensional Doppler echocardiography (2D-Echo) were carried out at the start of the cardiac rehabilitation program and at 1, 3, and 6 months later. Peak V• O2 was measured during CPX as described previously 9 and the LVEF and Tei index were obtained by 2D-Echo. 10 The measurement of LVEF used a modified Simpson's method with the apical 4-chamber view and the Tei index (normal range: 0.39±0.05), defined as the sum of the isovolumetric contraction time and isovolumetric relaxation time divided by ejection time, was measured from...

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“…Several small studies have evaluated diastolic function in endurance-trained and power-trained (static exercise) athletes. [115][116][117][118] None have demonstrated abnormal diastolic function with exercise training despite increases in LV mass. Alternatively, some of these studies suggest that diastolic function may be enhanced with exercise training.…”

Section: Dynamic Versus Static Exercise: Consequences For Diastolementioning

confidence: 99%

Exercise and Heart Failure

Piña¹,

Apstein²,

Balady³

et al. 2003

Circulation

878

286

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Effects of exercise on left ventricular diastolic performance in trained athletes

Cited by 52 publications

References 17 publications

Functional and Metabolic Evaluation of the Athlete’s Heart By Magnetic Resonance Imaging and Dobutamine Stress Magnetic Resonance Spectroscopy

Functional and Metabolic Evaluation of the Athlete’s Heart By Magnetic Resonance Imaging and Dobutamine Stress Magnetic Resonance Spectroscopy

Effects of Exercise Training on Left Ventricular Function Evaluated by the Tei Index in Patients With Myocardial Infarction

Exercise and Heart Failure

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