A Study On Biomechanics Of Take-off Technica In Men's Long Jump

Long jump long jump take-off technology is the core technology from different angles through the link in the Long Jump biomechanical characteristics of study provides a theoretical basis for the scientific training, strength training for the long jump studies provide a better reference value. In this paper, five long jump a player and a master athletes, as the object of study, the use of literature, film shooting, EMG testing and mathematical statistics, research methods, on the take-off leg to analyze the kinematic, and electromyographic aspects of muscle the contribution, coordination and other indicators to study and explore each phase of take-off stage of internal relations and laws, to provide a better theoretical basis for guiding the long jump training. Conclusions are as follows:1. Jumping in the long jump a player longer than master athletes takes a long time, resulting in time off the main reasons for the differences is the buffer time is too long, kicking short time, so that forces acting kicking a short time off are not ideal.2. Long a master athletes and athletes with speed in Jumping level there are significant differences, real reason for this difference is due to create a buffer stage, or athletes exposed the weaknesses of poor buffering capacity. Hip angle at the moment and push off the ground in an instant is less than the ideal value, the hip muscle strength around the lack of kicking movements have not been sufficient.3. Before the muscle activation succession one is in turn the stock inside muscle, the stock flank muscle, the musculus biceps femoris, the musculus soleus, fei the intestines muscle, the shinbone, the muscle, the stock musculus rectus. Before the conclusion succession was in turn the musculus biceps femoris, the shinbone, the muscle, the stock musculus rectus, the stock flank muscle, the stock inside myo-, fei the intestines muscle, the musculus soleus. Before the duration is in turn the stock musculus rectus, the musculus biceps femoris, the shinbone, the muscle, the musculus soleus, the stock flank myo-, fei the intestines muscle, the stock inside muscle.4. Vastus lateral is, vastus medialis, tibialis anterior muscle in the ground before a higher level of activation, while the soleus, gastrocnemius (medial head) in a manner to be activated only after the real. Vastus lateralis and vastus medialis muscle EMG activity that two relatively large range, almost the same time the beginning and ending, showing a high degree of consistency. Flexor of the gastrocnemius (medial) and the soleus muscle activity, are in the ground prior to the start and continued to the ground in the late stages of the end of the gastrocnemius and soleus muscle is almost the same time the beginning and ending.5. Long Jump during the same period in the buffer surface of muscle IEMG value is greater than kicking IEMG values of the surface. The measured strength is greater than eccentric muscle contraction to the strength of heart, only the muscles in the process of doing a strong buffer eccentric contractions, and this eccentric contraction is stronger, faster buffer, the more can speed up the stage to Push...