Firstly, time and space structure of competitive gymnastics element are analyzed by using philosophical method, internal development law of competitive gymnastics element has been carried out; Secondly, by using the method of document investigation and case analysis, attentions and of high difficulty element innovation are demonstrated.

Sociological study of performance of Level B and C difficulty jumps of Wushu routine;

An analysis on the techniques of woman s individual difficulty movement in the 9th World Aerobics Championship;

The results show that: movement difficulty mainly develops toward the improvement of movement linkage difficulty; the direction of flip linkage mainly develops toward for-flip and turning.

It degrades the demand of rotating occasion and enhances the movement difficulty about three-circle flip.

The action of turning body circumgyrating 720° is one of the most difficult action in difficulty movements of Wushu routines.

This paper analyses the difficult actions of mix-double event in 9th Aerobic Gymnastics world championships by data investigation,observation log and data statistic.

The result shows that in current world aerobic mix-double,the pattern structure of difficult action in a series of actions tend to be " 2 A,2B,6C and 2D".

A comparative analysis on the difficulty of China and foreign excellent athletes of floor exercise under the new rules;