I had planned to follow on from my November CrossFit Journal article on spine mechanics for lifters by discussing injury potential due to repetitive loading. In the November article I talked about the dangers of exceeding the shear strength of the spine with poor lifting form. However, injuries often occur in fitness programs due to low-force cyclic loading rather than peak loading. Then, in October, something happened on CrossFit.com that provided the perfect context for my points. On October 16, 2007, the Workout of the Day (WOD) was "Run 10K."
The comments contained a few of the usual complaints from folks who dislike running, but nothing unusual for this WOD. Just three days later, on October 19, the WOD was "Run 10K"! The first five posts to Comments will give you an indication of the general response:
1. Huh? Really? 3,2,1,....
3. Again...seriously? Is there a methodology to this? Is this a mistake?
4. You'd think it was April 1st.
5. Is it Groundhog Day?
Many who posted comments were surprised, as the posts above indicate, and there were a few more complaints than usual, but this post from RoyG caught my interest. How does a 10k run fit in with the CrossFit philosophy?
Tony Leyland is Senior Lecturer at the School of Kinesiology, Simon Fraser University, in Vancouver, Canada. He has taught at the university level for 24 years and has been heavily involved in competitive sports such as soccer, tennis, squash, and rugby as both an athlete and a coach for over 40 years. He is a professional member of the National Strength and Conditioning Association, a Canadian National B-licensed soccer coach, and a level-1 CrossFit trainer.