Can minor heart valve leak get worse from lifting heavy stuff? EKG showed depression, 2 years ago, stress test okay then. EKG showed same thing again.

Heavy lifting. does not directly effect a heart valve may raise the blood pressure and pulse thus making a murmur sound "louder" but the actual structure of the heart is unchanged by the lifting itself BTW I am "confused" a bit about the "depressions" noted on your EKG..some valve problems lead to heart muscle enlargement..(and ST segment depression) again...lifting has only transient effects! Z.