Research On The Construction Of Physical Fitness Structure Evaluation Model Of Physical Dance Students In Sport Colleges

In recent years,physical dance has been developing rapidly in China,and many institutions have introduced physical dance courses one after another,and many physical dance players have performed well on the world stage.However,the lack of systematic evaluation of students’ physical fitness structure in the training of physical dance students in universities has led to a lack of theoretical support for daily training,monitoring,diagnosis and evaluation of students.The construction of the evaluation model can provide a theoretical basis for teachers to scientifically assess the physical fitness level of students in physical dance,and provide reference for students to scientifically allocate time between technical training and physical fitness training in the training process.This thesis takes the construction of the evaluation model of physical fitness structure of physical dance students in physical education institutions as the research object.Through expert interviews and empirical research,representative indicators of physical fitness of students specializing in physical dance were screened out,and research methods such as literature method,questionnaire survey method and mathematical and statistical method were used to construct the evaluation model of physical fitness structure of students specializing in physical dance in physical education colleges,and the results are as follows.(1)The six primary indicators of the physical quality structure evaluation model for physical dance students in sports colleges are:special speed,special strength,special endurance,special flexibility,special coordination and agility,special balance;the nine secondary indicators are:movement speed,core strength,upper limb strength,lower limb strength,comprehensive endurance,comprehensive flexibility,coordination ability,agility ability,comprehensive balance;the 15 tertiary Indicators are Cowboy Bounce Kick,Supine Leg Raise,Bent Knee Sit-up,Push-up,Quickstep Single Leg Bounce in Place,Static Squat,Havers Step Test,Elbow Alternation,Supine Push-up into Bridge,Longitudinal Cross,Ankle Flexion Test,Heel Touch Test,Cross Exchange Jump,Crescent Stand,and Single Foot Rotation.(2)Based on the different student fitness indicators,principal component analysis was used to reduce the 15 fitness indicators into the following three indicators by using the following three formulae:PC1=-0.31253496 × 10s Cowboy Bounce Kick-0.31241429 × 30s Supine Leg Raise-0.31407716 × 1min Bent Knee Sit-up-0.20349657 × 40s Push-up-0.322283989 × 40s Quickstep Single Leg Bounce in Place-0.30444876× Static Squat-0.28676553 × Havers Step Test-0.258503254× 1min Elbow Alternation+0.078079846 × Supine Push-up into Bridge+0.213474164 × Longitudinal Cross-0.10187351 × Ankle Flexion Test-0.213933169 × Heel Touch Test-0.187754769 × Cross Exchange Jump-0.296913089 × Crescent Stand-0.296356123 × Single Foot RotationPC2=-0.15322316 × 10s Cowboy Bounce Kick-0.10005893 × 30s Supine Leg Raise-0.07794748 × 1min Bent Knee Sit-up-0.45619183 × 40s Push-up-0.071157921 × 40s Quickstep Single Leg Bounce in Place-0.118343× Static Squat+0.04751119 x Havers Step Test-0.362070526× 1min Elbow Alternation-0.528883245 × Supine Push-up into Bridge-0.241540907 ×Longitudinal Cross+0.10200899 × Ankle Flexion Test+0.376115468 × Heel Touch Test+0.153910518 × Cross Exchange Jump+0.189599747 × Crescent Stand+0.224362408 × Single Foot RotationPC3=-0.03827066 × 10s Cowboy Bounce Kick+0.02946218 × 30s Supine Leg Raise+0.04479105 × 1min Bent Knee Sit-up+0.0113914 × 40s Push-up-0.021398278 × 40s Quickstep Single Leg Bounce in Place-0.08263652× Static Squat+0.08570543 × Havers Step Test+0.03379396× 1min Elbow Alternation+0.030780033 × Supine Push-up into Bridge-0.167441101 × Longitudinal Cross+0.74862843 × Ankle Flexion Test+0.015920957 × Heel Touch Test-0.623869481 × Cross Exchange Jump-0.008084878 × Crescent Stand-0.028227022 × Single Foot RotationAfter testing,as all three indicators conform to a normal distribution,a mathematical model of the structure of the comprehensive evaluation of physical fitness of students specialising in physical education dance in sports colleges is constructed using a Gaussian Parsimonious Bayesian classifier.The model can determine whether a student has the potential to become a good athlete through probability calculation,and its formula is where xi is the PCi,σci and μci correspond to the standard deviation and expectation corresponding to xi for the case y=c,respectively.In the follow-up study of this paper,the model passed the intra-group validation,indicating that the model is an innovative and effective mathematical model that can be applied to the comprehensive assessment of students’ physical fitness.(3)The comprehensive evaluation model of physical fitness of students specializing in physical education dance in sports colleges developed in this paper provides theoretical support for scientific training,monitoring,diagnosis and evaluation of the players.After evaluating the current physical quality of students in physical dance specialities in sports colleges,targeted training advice and suggestions are given according to the students’ physical quality structure.According to the data,there is a significant relationship between the improvement of special level and the change of physical fitness,which indicates that it is scientific to use the results of this evaluation model to improve the level of physical fitness training,so as to improve the special level.