HEALTH & FITNESS ARTICLES
Run, Forrest, Run!
SLOW-TWITCH, OR TYPE I, MUSCLE FIBERS:
Ever need to run for a while, when you were, I don’t know, doing cardio or playing a sport!? Slow twitch muscle fibers are your best friend when running for distance, let me explain. Your slow twitch muscles are great for endurance activities like long distance running, cycling, and sports such as soccer. These muscles can perform work for a substantial amount of time without fatigue. Remember from my fast-twitch blog, fast twitch muscles are good for rapid movements like jumping or sprinting. They contract quickly, but get tired fast, and they consume an enormous amount of energy.
Your muscles, for the most part, are made up of a mixture of both slow and fast twitch muscle fibers. The amount and type of muscle fibers differ by individual of course. Interestingly, your soleus muscle, located in your lower leg, and back muscles that are involved in maintaining posture, contain mainly slow twitch muscle fibers.
Muscles dense with slow twitch fibers are considered red, because they contain numerous blood vessels. Slow twitch muscle fibers require a robust, oxygenated blood supply as they use oxygen to produce the energy needed to contract.
â€‹â€‹About Slow-Twitch Muscle Fibers
TRAINING SLOW-TWITCH MUSCLE FIBERS:
Isometric contractions, little-to-no joint movement, will cause constant contraction in your slow-twitch muscle fibers and can help improve their ability to utilize oxygen to produce energy. Example exercises: single-leg balance, front plank, side plank.
To summarize, slow-twitch fibers have unique functional characteristics, and they can be trained to be more aerobically efficient, with the proper exercise program, of course.
This article was provided by PT by CV
For more information on PT by CV, check out their full profile here.