I am running with the new mid foot strike form that you describe in your video and have been explaining in your work out plans with me. My stomach feels like I have been doing alot of situps over the last few days (which i have not). Does the running style (midfoot) put more strain on the stomach?
Hey there Bill - I would not say it puts "strain" on your stomach, but the mid-foot strike will "activate" your kinetic chain, which includes your core and spine stabilizers. When heel striking, the majority of the impact goes directly to your hips and lower back. By activating your core, your muscles are "firing" in a proper pattern and balance. So, just like like doing any new execise, you will experience some fatigue/soreness. And I feel that since you are a fast runner, this is probably heightened a little bit more than a slower runner. Once we get you tested for heart rate zones and pacing split times, we will then be sure that you are running at the appropriate intensity based on the purpose of each run workout.
If you can, try doing the BOSU Knee Tucks in the Video section of the site. This will help fire your core in a specific runnig movement. If you do not have a BOSU, just perform these in a push-up position - E
If it helps, I was doing a core excercise routine found in a RW article. It was doing static hold poses. Supermans, bridges and boards with pendlen(sp) swings. I did those for the last 7 weeks. I then found Erics routine in his blogs and watched the videos. Tried out the sequence and found out that night how effective going slow and doing minimal reps are. Ouch.