The size and pumping ability of the right side of the heart differs by age, gender and race/ethnicity, according to the first large imaging study of the right ventricle.

Hibernating, it turns out, is much more complicated than one might think.

Using a new noninvasive imaging technique, scientists said they have discovered important, fundamental differences in heart motion by age and gender.

Patients with abnormal diastolic function -- the heart is relaxed and expanded -- in the left ventricle have a lower exercise capacity, U.S. researchers say. Dr.

New research shows patients with abnormal diastolic function – when the heart relaxes and expands – in the left ventricle of the heart have a substantially lower maximum capacity for exercise.