The basic qualities of sports include speed, endurance, flexibility, balance and coordination. Are you worried about which sports qualities your child should develop? In terms of the most basic speed and endurance qualities, do you understand that these qualities are actually closely related to the percentage of different muscle fiber types in the muscle. Our human muscle fiber type there are two main, one for the fast muscle fibers, white, thicker diameter, fast contraction speed, power, but easy to fatigue; another for the slow muscle fibers, red, thin diameter, slow contraction speed, power, but can last, fatigue resistance. We often for Bolt in the 100-meter dash in the speed of the flying man and marveled at, but also often for the athletes who ran the full marathon and cheered. But in fact, the achievement of their excellent results is closely related to their own innate strengths. Because, different sports projects on the muscle fiber type composition requirements are different, speed, explosive projects require fast muscle fiber dominance, such as engaged in sprinting, jumping and other explosive project athletes such as Bolt, they are the same muscle fast muscle percentage is higher than ordinary people. And general endurance and strength endurance requirements of slow muscle fiber dominance, such as engaged in marathon, long-distance running and other aerobic projects athletes slow muscle percentage to be higher than ordinary people, middle-distance runners fast, slow muscle fiber composition of the two is almost the same. Surface electromyography, as an emerging technology, can accurately calculate the percentage of fiber types in the muscle, thus predicting the individual’s speed, endurance qualities and other athletic abilities. Parents can reasonably choose sports according to their children’s innate strengths, so as to achieve early knowledge, early planning, early training, and to explore their children’s athletic potentials, so as to achieve good competition results. At present, the gait analysis room of our department has introduced the first surface electromyography test system in Hunan Province, and through a large number of clinical studies, preliminary research results have been achieved, which can provide scientific basis for guiding the selection of athletes.