Sorry Mark,
I just noticed your reply.
Ok...It has been 3-4 weeks since I started putting in any serious mileage with the "heel raisers". Took a little getting used to at first but I was able to adapt to them. I would run most of my runs with them but a couple times a week, on a recovery grass-run, I would go without them.
I used to be a "heel-striker" before but after using the inserts I have become more of a "mid-foot" striker. (which is not necessarily a bad thing). It’s a great way the learn the “POSE” method running style without even trying.
I decided to do my first interval workout after coming back from my injury. I should have waited a couple more weeks but I had a race coming up. I ran the workout on soft grass and made it a longer session ( 1 X mile and 4 X 800 ) My pace was about 5:00 per mile. The mistake I made was that I wore my Nike XC racing flats with very little, if any, heel. This was a BAD IDEA. No prob. during the workout but the next day, on my recovery run, my calves were really sore. The right calf recovered but the left was knotted up and remained sore. It’s been almost 2 weeks and it is still slightly sore. I am hoping to start running again in a few days. I should have used the inserts in my flats! Oh, well I have now learned!
Other than the mishap while wearing my racing flats I feel that the heel inserts are working. The real test however will come after about 8-10 weeks of solid training since . in the past year I have not been able to get past this point without getting injured.
Hope this helps.
OldSchooler