Men's Long Jump, Two Athletes Jump Kinematics And Kinetic Comparison Study

By the research ways of kinematics and dynamics, applying two Panasonic camera with electro-shutter as well as a three-dimensional-testing force platform made by the Chinese Academy of science, Measured the takeoff technique of some high level athlete and middle level athletes. Select the Bluven-Fasial body model, applying the AIJIE-sports film analytical system, collect the picture and count data, Counted and assay the dynamic data with Dynamic Analysis Software made by the Chinese Academy of Science, to find the technique characteristics of the two type athlete and the difference between them. Then draft the scheme of improvement. Want to give the coach and teachers in basic level a true and detailed data and document. The research methods have follows: document-studying and investigation // film analysis //mathematics statistics. The results indicate that the middle level athlete have following shortcomes: a lots lose in the mass' horizontal velocity the time in compression phrase is too long to lose the very time on lift . The velocity of swing segment is lower than the high level athlete, the momentum cannot transfer all into the phrase of takeoff .In the analysis of athlete' dynamic curve, we found that the middle level athlete has a small strength in takeoff leg ,and has a small eccentric regimeability in leg's muscular . And work out some solutions to the problem.