authors Haykowsky, Mark J Kouba, Erik J Brubaker, Peter H Nicklas, Barbara J Eggebeen, Joel Dalane W Kitzman, MD
has subject area Aged Echocardiography, Doppler Electrocardiography Exercise Test Exercise Tolerance Female Follow-Up Studies Heart Failure Humans Magnetic Resonance Imaging Male Muscle, Skeletal Oxygen Consumption Prognosis Severity of Illness Index Stroke Volume