Jason Snyder
WKR
You should obtain his data and do a longitudinal study for us all. You know as well as I do that the overwhelming majority of recreational runners run at a pace that is somewhat comfortable for THEM.
Also consider what I posted about life-long Scandanavian X-Country skiers showing a positive correlation between skiing fitness level (and duration of that level) and atrial fibrillation. A synopsis of this is available at Medscape.
If you are not familiar with Dr Barry Sear's writings on inflammation at the cellular level, you should check it out.
I doubt I'll be doing this in my spare time. I'll likely go for a run or a bike ride instead.