I am a long time distance runner turned amateur triathlete who has had a long time achilles tendon problem in both legs. I first injured my achilles in college about 15 years ago, and since that time the injury has flared up on and off. In recent years I switched to triathlon training because it allowed for hard training every day while laying off the achilles completely (while swimming), or partially (while cycling).
To get to my question, I was wondering if anyone knows of a strength training program which can build up the calves in such a way that running won't aggevate the achilles, or at least will aggrevate it less? Currently the only thing I do is standing one-legged calf raises, once per week, with a little added weight. But I am open to doing much more work if it could help my problem.
FYI the reason I want to do this is because I only run at most every other day now due to the achilles problem. But I have my eye on maybe doing a standard traithlon or a half marathon at some point, both of which would require much more running mileage than I am currently doing.