It was not until 1984 that women were permitted to compete in the Olympic marathon. Today,
more women than men participate in road racing in all distances except the marathon where …

The inherent assumptions of the PVR equation are that (mPAP− LAP)/CO relationships are
linear and cross the line of origin. If these assumptions are correct, PVR should be …

Background Some patients with COVID-19 who have recovered from the acute infection
after experiencing only mild symptoms continue to exhibit persistent exertional limitation that …

Background—It is unclear whether, and to what extent, the striking cardiac morphological
manifestations of endurance athletes are a result of exercise training or a genetically …

Objectives: The purpose of this study was to determine the mechanisms responsible for
reduced aerobic capacity (peak Vo2) in patients with heart failure with preserved ejection …

Objectives: The purpose of this study was to evaluate the mechanisms for improved exercise
capacity after endurance exercise training (ET) in elderly patients with heart failure and …

Atrial enlargement in response to pathological stimuli (eg, hypertension, mitral valve
disease) and physiological stimuli (exercise, pregnancy) can be comparable in magnitude …

Exercise stresses the pulmonary circulation through increases in cardiac output (Q.) and left
atrial pressure. Invasive as well as noninvasive studies in healthy volunteers show that the …

Background Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) affects tens of
millions worldwide; the causes of exertional intolerance are poorly understood. The ME/CFS …

Background—The clinical relevance of exercise-induced pulmonary arterial hypertension
(PAH) is uncertain, and its existence has never been well studied by direct measurements of …