I read the article twice, very interesting, seems well grounded & balanced. First off, there are obviously no clear indications as to who will or will not get atrial or ventricular issues. What does seem clear from the article is that you might ask yourself "where do I lie on the bell curve of long-term very high exertion activity." And if you think you're on the far right side of this curve and have been for many years, you're working in that zone of risk factors.

It was also very interesting to hear both Zinn & Endicott emphasize the strength of their early denial. Most of us are very proud of the work we do to maintain a higher level of conditioning (and we should be, methinks). But this article makes it plain to see, that just because we can build up our hearts to work above and beyond, does not imply that there is no long-term cost. And the more extreme the demands, the higher that long-term cost appears to be.

I certainly hope Velo continues to bring more content like this to the readers. It's good work, relevant and generates interesting discussion.