All of the following are TRUE about isometric exercises, EXCEPT:

Isometric exercise results in transient but sigificant increase in systemic vascular resistance, aerial pressure, hea rate, cardiac output, left ventricular filling pessure and hea size. Patients wit ventricular arrhythmia or myocardial infarction should avoid this as tey can increase their intensity. Isometric exercises can cause, S3,S4 is accentuated Diastolic murmur of Mitral stenosis becomes louder Diastolic murmur of aoic regurgitation,systolic murmur of mitral regurgitation and ventricular septal defect increases. Systolic murmur of aoic stenosis and systolic murmur of hyperophic obstructive cardiomyopathy diminishes. Ref: Primary Cardiology, edited by Eugene Braunwald, 2nd Edition, Page 157.