Hi Eric,
There are a couple of other considerations:
1. Most studies that involve exercise and diving use VGE (venous gas emboli, or Doppler bubbles) to measure decompression stress.
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From a medical standpoint, a conservative approach is best. I think that your idea of adding an increased personal factor on your computer after a regular maintenance run or bike ride is very reasonable. Beyond that, you're going to have to be the judge of what's conservative based on your knowledge of your own level of fitness, recovery time, and exercise routine. For example, are you planning on making a series of deep technical dives three hours after pounding out a max set of bench presses or going for a personal record 10 K time? Might not be not such a good idea.
I'm riding on Dr. Powell's coattails here because he's already said this, but overall physical fitness is GOOD, and you sound like a pretty fit guy. I also think it's worthwhile to mention the fact that most working military divers exercise strenuously on a daily basis. Physical conditioning has been demonstrated to have a protective effect, and I think that by being conservative and mindful of your own physiology, your risk of DCS post-exercise will be mitigated by your overall level of fitness.
Best regards,
DDM
