The muscles of the body are composed of several types of fibers. They generally fall into two broad categories - slow and fast twitch twitch. The number of slow to fast in a particular muscle ratio is known as a muscle fiber. The number before the slash refers to the percentage of slow twitch; the number after the slash rapid contraction. For example, a common trapezoid ratio is 53.7 / 46.2.
Slow Twitch
Slow fibers are dominant in the muscles that contract and release energy slowly over a long period of time, like when you stand, walk or hold his head. Because these muscles consume oxygen for long periods of time are called aerobic. In muscles I have taken almost as fast connection, slow fibers are engaged to perform activities such resistance because they are more efficient to do the work over a longer period of time.
Fast Twitch
In addition, these muscles contract dominated fibers react quickly with strong contractions, use a lot of anaerobic energy in a short period of time, but tire quickly. With activities such as sprinting and weightlifting, rapid contraction are more efficient to do the work.
Change Ratios
Although the proportions of muscle fibers of each person are predetermined genetically modified can initially relationships depending on the type of exercise activities and strength training. Generally endurance type activities, such as cycling and running, tend to increase the amount of slow-twitch fibers in muscles used in the activity.
However, in training routines such as weightlifting, they tend to increase the proportion of fast-twitch fibers. And the amount of weight you lift and the number of repetitions can also edit a report of the fiber. Lifting heavy weights with fewer repetitions targets slow-twitch fibers, while the reverse - lift a lighter weight, but with more repetitions - build fast twitch fibers.
Fitness Goal
Also that the muscle fibers, the type of training depends on your fitness goal. For example, if your goal is to bulk up and build muscle, then they do the activities that work fast twitch fibers. Because fast twitch fibers are physically larger than slow-twitch to begin with, more than an increase in the specified size. However, if your goal is endurance, then work slow-twitch fibers. Smaller, this difference was not shown in size but increase muscle strength.
Depending on your goal, knowing that stimulate desired effect for fiber is the key to effective training. Next time devoted to training of this type of fiber to achieve your goal.
