From the NIH: echocardiographic studies indicate that with age, left ventricular filling rate decreases substantially.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D003971:Diastole; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016276:Ventricular Function