In athlete's heart, would an enhanced ejection fraction (80%+) and fractional shortening (50%+) at rest be important? what could it suggest? (assuming all structural, systolic and diastolic function parameters are within normal limits for an athlete?

My understanding is that contrast enhanced echocardiography is used to corroborate the ejection fraction on routine echocardiography. If your EF is over 75% concern would be presence of hypertrophic cardiomyopathy which should show up in an echocardiogram. Fractional shortening of 50% indicates good myocardial contraction. Apparently your echo didn't show any structural heart disease. Is EKG ok?