Two months of endurance training does not alter diastolic function evaluated by TDI in 9–11-year-old boys and girls

Objective:Superior global cardiac performance (ie stroke volume) is classically reported after training in children. Current knowledge of the impact of exercise training on myocardial relaxation, a major component of left ventricular (LV) filling and subsequently stroke volume, is, however, limited...

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Published in:British journal of sports medicine 2009-02, Vol.43 (2), p.132-135
Main Authors: Obert, P, Nottin, S, Baquet, G, Thevenet, D, Gamelin, F-X, Berthoin, S
Format: Article
Language:English
Subjects:
Cardiovascular disease
Case-Control Studies
Child
Children & youth
Diastole - physiology
Echocardiography, Doppler
Exercise
Exercise - physiology
Exercise Test
Female
Flow velocity
Heart Ventricles - diagnostic imaging
Humans
Life Sciences
Male
Oxygen Consumption - physiology
Physical Education and Training - methods
Physical Endurance - physiology
Physical fitness
Stroke Volume - physiology
Studies
Ultrasonic imaging
Ventricular Function, Left - physiology
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Summary:Objective:Superior global cardiac performance (ie stroke volume) is classically reported after training in children. Current knowledge of the impact of exercise training on myocardial relaxation, a major component of left ventricular (LV) filling and subsequently stroke volume, is, however, limited in the paediatric population. This study aimed to investigate the effect of aerobic training on LV wall motion velocities by tissue Doppler imaging (TDI) in healthy children.Methods:25 children (11 girls, 14 boys) were enrolled in a 2 month high-intensity aerobic training programme and 25 (12 girls and 13 boys) served as controls. The children (9–11 years old) performed a graded maximal exercise test on a treadmill to evaluate maximal oxygen uptake. Standard Doppler echocardiography and TDI measurements were performed at baseline and end of the study. Tissue Doppler systolic, early and late myocardial velocities were obtained at the mitral annulus in the septal, lateral, inferior and posterior walls.Results:Maximal oxygen uptake increased by 6.5% (before: 51.6 (SD 4.2), after: 55.0 (4.5) ml/min/kg p
ISSN:0306-3674
1473-0480
DOI:10.1136/bjsm.2007.039941