Original Article : Sprinting or Jogging? Which Makes You Stronger?
by : JASON FITZGERALD
From : blog.mapmyrun.com
Some days you just want to run easy, while other days it may seem impossible to hold yourself back. Slower and faster running both have their places in every runner’s training arsenal, and knowing how and why to implement each type is essential to your success.
At the physiological level, our muscle fibers play an essential role in our ability to sprint and also run long and easy. Developing both types of skills is beneficial, whether you’re training to run a fast mile or an ultramarathon. Different types of workouts can be used to target each group of muscle fibers.
Slow- vs. Fast-Twitch Muscle Fibers
We are all born with slow- and fast-twitch muscle fibers. On average, we start with about 50% of each, but we can improve their function and efficiency with training. Here are the types: