What is fast muscle fiber, the relationship between fast muscle fiber and muscle gain. Understanding the concepts and differences between fast muscle fibers and slow muscle fibers has two main meanings for muscle enhancement. The first point is to understand the effect of anaerobic exercise on muscle enhancement from the essence of muscle. The second point is that during exercise, it is necessary to stimulate fast muscle fibers with rapid explosive movements to thicken them.
Muscle consists of fast muscle fibers and slow muscle fibers. Fast muscle fiber has large diameter, fast reaction speed, high tension and strong anaerobic metabolism ability. Therefore, anaerobic exercise is mainly done through fast muscle fibers, which makes the cross section of fast muscle fibers thicker and achieves the purpose of muscle gain. Slow muscle fiber has small diameter, slow reaction speed and high aerobic metabolism ability. All aerobic exercises are mainly done by slow muscle fibers.
Therefore, from the essence of muscle, to achieve the effect of increasing muscle, anaerobic exercise (high-strength training) is needed to stimulate the increase of fast muscle fibers. Exercise can change the specific gravity of fast muscle fiber and slow muscle fiber.
In training movements, due to the rapid response characteristics of fast muscle fibers, you need to develop the training habit of explosive rapid movement and load, so as to mobilize more fast muscle fibers to participate in the movements. The more you mobilize, the greater your muscle range. For example, in dumbbell bench press training, we need to push the dumbbell up quickly with explosive force (1 second), and mobilize more fast muscle fibers to make it thicker.