The Diagnosis And Research On The Teaching Methods Of College Students’ Swimming Grouch Start Technique

Objective: the purpose of this paper to the University Swimming Course for students majoring in were kinematic and dynamic test, analysis of athlete squat starting in the preparatory stage, from the stage, the flight phase, into the water phase of common errors and causes, and then through the practice of land crouch start; core strength training; metal lever training, improve students of technical level. The improvement effect of the three methods of verification technology on the swimming track. Hope to make some for training means, the control of the excellent athlete technical indicators and requirements of the proposed monitoring and for the teachers and the students master swimming "squat" starting provide technical and theoretical reference.Methods: the through the literature data method, experimental method, mathematical statistics, and of swimming majors squats the type of preparation techniques, from Taiwan, flight and the four stages of water into the kinematics and dynamics analysis.Results: students swimming squats the type of position of the center of gravity of the ready position, each joint angle; of from the stage of motion and dynamics analysis; flight phase time, into the water distance; into the water phase angle and speed according to the teaching methods, students of the technical data more optimized, close to the national standard of elite athletes. Three kinds of teaching methods to improve the technology of squatting have very good results.Conclusion: 1, in the crotch of the preparation stage, through the use of land starting training and strength training, the position of the center of gravity of the students closer to the starting platform edge, to break the balance quick start; secondly, students hind leg knee joint angle increases, this change can more conducive to rapid push off the starting platform. 2, in crouching starting from Taiwan stage and characteristics of technical movement: the Taiwan stage leg knee angle from increasing knee extensor muscles do concentric contraction, the front knee angle decreases first and then increases, the first knee action to do knee extensor actions have a buffer storage stage. 3. From the stage of dynamics analysis that this stage there are three force process, hand to start from the time period of the impulse speed from the greatest contribution, students in the reaction time to the hand from the minute by minute to give full play to the hand pulled and body coordination force in this part of the effect. 4. During the flight and into the water phase, we set a metal lever, and strengthen the strength training of students, and adjust the angle of the student body and into the water. In these two parts the body is mainly influenced by the force from the body and the speed when it is from the stage.. 5, in the use of teaching methods, land crouch start practice, practice students of the center of gravity of the body under pressure, in favor of body quick start, in addition to strengthen land starting practice to make more familiar to students of the action, make students more coherence; strength training, to improve the students’ physical stability and control of their own, strengthen the body muscle explosive force, ready to start, from Taiwan, the flight phase has an important role to; set a metal lever can be mandatory training students from the angle, from height,empty distance, the angle of water.