Research On The Construction And Evaluation Of The Physical Fitness Index System Of U11 Female Football Players In Shaanxi Province

Nowadays the world football match is becoming more and more fierce,and the physical fitness training is an important part of competitive sports training.Physical fitness evaluation is an important driving force for the implementation of scientific physical fitness training.Through the evaluation of physical fitness,it is possible to analyze the various aspects of the plan's rationality,load adaptability,and body's condition of recovery during the training process,and make feedback.On the basis of good physical fitness,we can guarantee for players to develop their technical and tactics.This study takes the U11 women's soccer team of Shaanxi Youth Sports School as the research object,and establishes the physical fitness evaluation index system and evaluation criteria to provide reference for athlete training,diagnosis and talent selection.The thesis uses literature data method,questionnaire survey method,sports measurement method and mathematical statistics method.According to physical fitness evaluation theory and physical development characteristics,after two rounds of expert survey,the indicators are re-screened according to the expert teaching training experience and theoretical knowledge accumulation.After screening the reference expert opinions,and systematically,scientifically,representatively and feasiblely select the principle of indicators to form a first-level indicator containing three major modules:body shape,physical fitness and physical function,including length,fullness and speed.Second-level indicators of strength,strength,flexibility,sensitivity,coordination,physiology,and biochemistry,including height,upper limb length,lower limb length,weight,BMI,30 meters,standing long jump,plate support,800 meters,Three-level indicators of 19 elements of sitting body flexion,crossbow,Illinois running,snake-shaped sprinting,quadrant jumping,rope ladder splitting legs,cross-footing,heart rate,vital capacity,hemoglobin,red blood cells,and blood testosterone.Finally,according to the test scores,the results show that the athletes'body shape and body function indexes are in the normal range,but there are individual differences,and the individual differences of sports quality indicators are more obvious.Finally,the percentile method is used to formulate individual evaluation criteria for each indicator of athletes,and the five-level evaluation is used to formulate individual evaluation grades and comprehensive evaluation criteria.get conclusion:(1)Establish a physical fitness evaluation index system for U11 women's football players with 3 first-level indicators,10 second-level indicators and 19 third-level indicators.The indicators in the indicator system are of different importance,and the weights of each index are determined.(2)U11 women's football players have normal body shape and physical function values,and there are individual differences.Sports quality training should focus on developing athletes' sensitivity,rapid strength,coordination and reaction speed.(3)Establish the scores of individual scores of Shaanxi U11 women's football players,calculate the total scores of physical fitness based on the scores and weights of individual scores,and establish a single grade evaluation and comprehensive evaluation criteria of physical fitness.