Mobility Training for Sprinters
To help avoid injury and maintain a good sprint technique you need to be mobile and flexible.
We are not saying that you need to have the flexibility of a gymnast, but many injuries are caused in athletics by a lack of range of movement in the major muscles used when running. As sprinting is a repetitive movement, the muscles get used to only moving in a certain range of motion, which, overtime limits them to this range. Alongside your weights and circuit training this will cause tight muscles which are often a precursor to more serious injuries. This means you need to work on your mobility on a continual basis to keep your muscles loose and flexible.
Stretching, foam rolling and basic mobility drills such as hurdle walkovers are the best way to keep your muscles loose and mobile. You can also try sports massage or massage guns (although these can be more expensive options).
Muscles to pay particular attention to are fairly obvious ones in terms of running. The main muscles to work on are the calf (both with bent and straight legs - to get gastrocnemius and soleus), hamstring, glutes, lower back and quadriceps.
A hurdler, whose event puts muscles through a great range, will require more work on mobility than other sprinters.