<span>Sprint training can cause a shift from type I to type IIa fibers.
- because Type I or slow twitch muscle fibers are best for activities that exhibits endurance. examples are running and cycling in long distances. it has been said that it can cause a type IIa shift or also know as fast oxidative - glycolytic fibers. this are identifeid as twitch muscles fibers that are being converted brought by endurance trainings. </span>
