(2) the strength or weakness of the

(2) the strength or weakness of the expressive force of the action is reflected through the action. The expressive force of action not only has its subjective factor, but also has its objective factor. A objective factor 1 excellent professional skills, technology refers to the ability to give full play to the athletes body reasonable and effective sets of movements, methods and skills. To master all kinds of basic movements, difficult movements, characteristics and techniques related to aerobics skillfully and creatively in all kinds of environments is the basis of aerobics performance. And in this technology to strengthen the accuracy of action, strength, amplitude, repeated training, constant thinking, performance will be correspondingly greatly improved. 2 good physical quality good physical quality is the basis of mastering calisthenics techniques, improving performance and improving sports results, we should pay attention to the following aspects: Flexible Quality: sensitive quality refers to the range of motion of joints. There are two ways to develop and improve your flexibility: First, in bursts. The explosive method is characterized by rapid vibration and swinging, such as various kicking movements; second, slow tension. The slow tension method is shown by the stretching of the toughness, such as the legs, the pitchforks. The sensitive quality: The sensitive quality is the athlete's movement skill and each kind of quality in the movement movement movement process, the synthesis manifests. Aerobics athletes in the fast-paced music, quickly change the position of the body, many joints at the same time or alternate movement, non-coordinated, non-paired action repeated, so that the sensitivity of the higher requirements. The sensitive quality can only be displayed after the athletic skill is mastered skillfully, and the expressive force can be fully displayed on this basis. Only athletes carry out various comprehensive physical exercises in accordance with the rhythm of a certain frequency, improve their proficiency in mastering aerobics movements, master more types and difficulty of aerobics movements, and constantly improve their speed, strength and flexibility, can fully display the expressive force, then enhances the overall level. Speed quality: large, fast rhythm is the completion of aerobics movement characteristics. This requires the athlete to have the fast nerve transfer and the muscle contraction ability. In addition to carrying out intensive practice training at a certain fast pace, we should pay full attention to the speed and ability of muscle relaxation, and constantly improve the coordination between muscle groups and between them and the antagonistic muscle groups, thus effectively reduces the resistance which because resists the muscle group tension to produce, is advantageous in the display speed.