A Comparative Study On The Difficult Movements Of Chinese And Foreign Elite Athletes Of Competitive Aerobics Under The Rules Of 2017 Edition

Competitive aerobics is a continuous,complex and high-intensity aerobics sport with music accompaniment.The presentation of difficult movements in the competition can best reflect the competitive strength of athletes,but also an important basis for referees to score,which plays an important role in the results of the competition.In the 2017 edition of the rules,the difficulty part of the rules have been greatly revised.With the help of literature method,expert interview method,questionnaire survey method,video analysis method and so on,the revision of difficult movements in the 2017 edition of the rules and their guidance under the 2018 National Aerobics Championship and the Champions League Adult Aerobics Championships were carried out in the 2018 National Aerobics Championship and the Champions League.In the final of the event,a total of 47 sets of difficult movements in the single event final of the 2018 World Aerobics Championships were analyzed,and the differences in difficult movements between Chinese and foreign elite athletes of competitive aerobics singles were compared.This paper finds out the advantages and disadvantages of the outstanding athletes in the difficult movements of Chinese competitive aerobics singles,so as to provide valuable reference materials for improving the level of competitive aerobics singles in our country.The conclusions are as follows:1.2017 edition of the rules,the number of difficulties in the high score section increased,the number of difficulty in the 0.1 score section decreased,and the increase in the difficulty number in the high score section highlighted the "difficult" characteristics of competitive aerobics;Allow a lack of group selection difficulty changes to give athletes more space to choose their own high score difficulty;The "upgrade" of the difficulty combination and the stricter standard of deducting pointsindicate that the difficulty of competitive aerobics is developing towards more diversification,innovation and standardization,and at the same time puts forward higher requirements for athletes’ physical ability.2.The difficulty scores of Chinese and foreign male singles are concentrated in0.6 and 1.0 points,while those of women singles are concentrated in 0.5 and 0.9points.There was no significant difference in the difficulty selection between Chinese and foreign elite athletes in the 0.8-1.0 high score section.3.The Chinese and foreign elite athletes in single-person exercises show the characteristics of C > A > D > B in the selection of difficulty group;The difficulty utilization rate and average score of group D of elite male singles athletes in China are lower than those of foreign countries,and the difficulty of group D is the weak link of excellent athletes of male singles in our country.There is no significant difference in the difficulty selection and average score between the elite female singles athletes in China and abroad.4.In the selection of difficulty combination of three connection types,Chinese and foreign elite athletes of single-player exercises all show that C C A is the main type of difficulty combination,the difficulty combination of two connection types is characterized by C A and C C equaling autumn color,and the difficulty combination type with skill intervention is not used yet,and the combination type of difficulty combination with skill intervention is less.And the root name of the difficult combination is the same as that of the other,and the arrangement is lack of diversity and innovation.From the point of difficulty combination type,score selection and root naming selection,it is more difficult for Chinese single-player to be more difficult than foreign countries,but the specification and quality of individual difficulty action is lower when pursuing more difficult difficulty combination.5.Compared with the foreign countries,the average difficulty score of themiddle and lower sets of elite athletes in China is lower than that in foreign countries,which indicates that there is a certain gap between the physical fitness of the outstanding athletes of single-person exercises in our country and that of the foreign countries.In the layout of difficulty field,compared with foreign countries,the difficulty movement of elite athletes in single-person exercises in our country is more concentrated in the center position,and the distribution of other directions is not uniform,and the distribution of difficulty venue is lack of balance.