Cardiomyopathy means disease of the heart muscle. Systolic dysfunction is when the heart does not pump as effectively as it should and causes a reduced ejection fraction, meaning the amount of blood that is pumped out of the heart is less than it should be. Diastolic dysfunction is when the heart does not fill as well as it should. Often people with diastolic heart failure continue to have preserved ejection fractions and thus do not have systolic heart failure which is what is considered to be the "norm" in terms of heart failure. Systolic has been long thought to be more common but they are finding more incidences of diastolic now.