I started with week 7 last Monday, and the schedule said to run 10 minutes, walk 1, and repeat this until 5 kilometers of running has been achieved. Ignoring the distance obtained from walking, that works out to about 29 minutes of running at 6.6 miles per hour.
I got through the first ten minute part, but my right calf felt extremely tense, and was not able to make it through the next 10 minute run. I did not want to risk injury, so instead I just went back to walking slowly for a couple minutes, and went back up to running speed again, and then my calf got sore, so I slowed down again. After about half an hour on the treadmill, my calf felt better again while running, but it wasn’t a good session. I did not feel cardiovascularily challenged, but the lower part of my legs obviously were not sufficiently warmed up or stretched for the warmup period. At a minimum in the future, I will stretch for half a minute on each calf before going into my pre-run walk routine.
As a result of failing to do this week’s regimen to the letter, I will be repeating it again next week.
Today’s (Wednesday’s) session was supposed to be a run 4 minutes, walk 1 minute session, repeated 6 times. I did this, and experienced similar soreness in my right calf (despite stretching beforehand), but it wasn’t nearly as bad as the previous session. I also did a modification of my running step, where I took more frequent steps and this seemed to alleviate the problems that I was having. In fact, in the last run, I decided to go for ten minutes straight just to see how much energy I had – and I did make it.
I think this issue with my calf can be resolved with proper stretching and a proper warmup routine, perhaps longer than the five minutes of walking that the Learn To Run 10k program suggests.
Complicating the matters somewhat is that I have not skipped a training session since I started in early November. Unfortunately my next scheduled session is on December 25, 2009. This means that the gym will be closed and I will consider running outside in what will likely be nearly freezing weather, albeit sunny. I recall during the first year that I trained for the Sun Run (2005), I did everything outside, whether it was raining, sunny or dark!