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Echocardiographic findings in young healthy subjects before and after intense physical training ?. Alon Grossman MD MHA, Michal Benderly Ph. D, Alex Prokupetz MHA, Yuval Levy MD MHA, Ofra Kalter-Leibovici MD Israel Defense Force, Medical Corps,
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Echocardiographic findings in young healthy subjects before and after intense physical training ? Alon Grossman MD MHA, Michal Benderly Ph. D, Alex Prokupetz MHA, Yuval Levy MD MHA, OfraKalter-Leibovici MD Israel Defense Force, Medical Corps, Israeli Air Force, aero medical center
Introduction • Screening for structural heart disease is an essential part of the screening process in military settings and professional athletes. • 2 main reasons for such screening: • arrhythmias or sudden death • disqualification following a costly training period
Introduction Modern equipment are probably more accurate than those obtained in the past. M-mode values were performed in relatively heterogeneous populations ,making it difficult to apply to young healthy subjects.
Aims To determine normal M mode echocardographic values in healthy young adults. To evaluate whether an intense period of physical activity influences these values.
Methods Subjects were 17-25 year old flight academy candidates evaluated at the IAF aero medical center in the years 1994-2010. At the IAF aero medical center, subjects undergo a screening process which includes a comprehensive physical examination and ECG.
Methods When a morphologic cardiac abnormality is suspected based on physical or ECG findings, subjects are referred to echocardiography(clinical group). In the absence of physical or ECG findings, all subjects undergo an additional non-medical selection process following which all undergo echocardiography (routine group).
Discussion Normal M mode parameters are presented, with or without a prior prolonged physical training period. Training period influences the echocardiographic findings. M-mode values in young subjects is crucial because most cardiac dimensions are age and gender -dependant.
Discussion Discussion The study represent a cohort of young physically active males, but not the endurance athletes. Routine group underwent echocardiography following a relatively intense period of physical activity. Clinical group underwent the examination without such an intense period preceding it.
Discussion • Routine group AO root and LVED diameter were slightly increased . • Clinical group LVMI and PASP were slightly increased . • LA diameter, LVED diameter, IVS thickness and PW thickness were similar between the two groups.
Discussion • Increased LVES in routine group, support the lack of influence of an intense period of physical activity in non-professional athletes on cardiac output. • The intense period of physical activity resulted in a temporary increase in cardiac output, thus leading to a lower PASP.
Study limitations Only male studies. No objective assessment of the amount of physical activity. Routine echocardiographic examination does not include evaluation of diastolic function.
Conclusions Normal M mode characteristics in young healthy males may be slightly different than values based on heterogenous and smaller cohorts. A short period of intense physical activity in young healthy physically active non-athlete males leads to mild changes in cardiac morphology.