Physique Evaluation Modelling And Special Fitness Of Professional Ballet Dancers

Purpose:To build a body shape evaluaion model as well as an index system for ballet dancers and to provide reference for training and selection of the dancers and students,the study keeps its main task to compare and analyze the body type and physical quality feature between the ballet dancers and the students,aiming to improve the ballet dancers' drilling and appreciation degree of ballet.Methods:On basis of a great quantity of literature materials and asking the experts' opinions widely,combined with ballet features,the study screened out more than 40 form and 10 diathesis index,tested more than 400 ballet dancers and students and carried factor analysis and other statistical process to the measured data.Results:By comparing the body form feature between ballet dancer and bachelor student,come out a discriminating key index.By analyzing the dancer's figure component through factor analysis,erect a figure estimation index system.By the actual measured data,get the average model for dancer's figure and analyze some diathesis index connected closely with ballet technique features.Conclusions:1.the height of the dancers is taller,the length of main limbs is longer, the length proportion of limbs is more reasonable,and the weight,width and girth index is bigger.The body solidity is relatively big,and the head,small and round,the hands and feet,narrow and long,the arch, higher.2.the study analyzes the key components of the dancer's body form: 6 items for male dancer,height,arms length proportion,bounce,legs length,width proportion and body fat factor.9 items for female dancer, height,solidity,legs length proportion,bounce,limbs far end girth, head width,trunk width,head height and arch height factor.When select and estimate a ballet dancer,the factors above should be considered synthetically.3.The study erects an estimation index system for dancer's body form and on basis of that get a dancer body form model.These index can describe the common feature of the body form leading factor properly and comprehensively.The body form model can be used for dancer estimation and advanced selection.4.vertical jump height or five-digit vertical jump height can be one judging factor for the dancer's training and performance level.when fix the pelvis,the extent of straightening one's leg forward,sideward, and backward can be used for monitoring the female dancer's training. For male dancer,the extent of straightening one's leg forward is available.Furthermore,the extent of plantar flexion is very meaningful for improving teenager students' training.