Abstract:The present study was done to compare tension time index in athletes and non-athletes. Improvement to maximal oxygen uptake is mainly due to myocardial adaptations brought about by physical training. As a consequence, the athlete’s heart echocardiographic modifications associated with these adaptations are already well-known. Student of cardiac physiology have recognized since 1940 importance of tension time and left ventricular ejection time as two main parameters of cardiac function.
After getting approval from medical ethics committee at Dr. D.Y. Patil Hospital & Research center, Nerul, Navi Mumbai, 20 athletes and 20 non-athletes (age-group above 18 - 24 years) were asked to do treadmill at different duration by using Bruce protocol after signing informed consent form for 3 times a week by keeping some criteria and their systolic time intervals .i.e. pre-ejection phase (PEP), Left ventricular ejection time (LEFT), duration of systole. i.e. total electromechanical systoles (QS2) were measured through 3D echocardiography.
There tension time index was calculated. After doing statistical analysis, it was found that tension time index, which is a measure of myocardial activity, is increased in athletes than in non-athletes. (p<0.01).
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