I have ran for many years, but ever since a cycling accident in 2007 I have struggle with lower back issues. With many visits to a , I accept that the way forward was pain management through appropriate exercise. When I thought that was working I slowly introduced my running which was going well. Then when I introduced a bit of speed work, as I increased the intensity, I started feeling cramp deep in the middle of the right calf. The more I work it, the worse it gets taking up to two week to recover. During that time I can't run and struggle with leg exercise for a week. Doctor recons it comes from the back but no matter what I do exercise wise, it does not prevent this happening.
Anyone recognise this and recommend the correct path?