Re: Diastolic Question for the Veterans
I think it has to do with the flexibility of the venous/arterial systems which gets less and less with age. A more flexible system can "squeeze back" more and thus maintain pressure absent the heartbeat for a little longer and a little harder. As we age, the pipes are more rigid and once the heart stops there's no more back pressure. Thus at any stage of life th diastolic will be more determined and less "adjustable" than the systolic which is highly depedent on the strength of the heartbeat!
Just a guesstimate thaough.