Your Action Plan
There's no conclusive evidence that muscle fibers can transform from slow- to fast-twitch or vice versa. In other words, while you can improve at sprinting or other explosive movements, it may not be because you're converting muscle fiber types.
More From Greatist: The Minimum Amount You Can Strength Train and Still See Results
Still, fast-twitch (type IIb) fibers can be converted into moderate fast-twitch (type IIa), or vice versa, through increases in endurance or resistance training. And keep in mind that fast-twitch muscle depletes with age considerably more than slow-twitch, so increasing muscle power is less feasible later in life.
Still, generally speaking, when muscles are forced to work differently and you get out of your comfort zone, you get a better workout. Keep mixing your workouts up to recruit all types of muscles fibers—and to fight dreaded gym boredom.
More: Test Your Fast-Twitch Muscles
Connect with us on Twitter, Facebook, Instagram or Pinterest for more tips, recipes and ideas to fuel your ACTIVE life.
Stay in shape in a fitness class or read more fitness articles.
