Interaction of age and exercise on the heart and its blood supply.
D000367:Age Factors; D000818:Animals; D001775:Blood Circulation; D001835:Body Weight; D002196:Capillaries; D003097:Collateral Circulation; D003331:Coronary Vessels; D006321:Heart / Q000033:anatomy & histology; D006352:Heart Ventricles; D008297:Male; D009929:Organ Size; D005082:Physical Exertion; D051381:Rats; D012039:Regional Blood Flow