College Students In Tihe Movement Of The Athletes On Different Parts Of The Body Acceleration Of Change And The Relationship Between Energy Expenditure Research

Purpose:By wearing the three-dimensional accelerometer on nine parts of the body of university athletes in different sports,the three-dimensional acceleration data of different parts in different sports modes can be measured.Used at the same time Meta Max 3 b metabolism of portable gas analyzer monitoring of college athletes in the process of movement energy consumption data,using descriptive statistics,correlation analysis and regression analysis method to explore the problem of the following two aspects:1.Based on the correlation analysis between counts and energy consumption of three-dimensional accelerometer[1],the body parts with the most close relationship between the three-dimensional acceleration and energy consumption in different motion modes were selected.In the process of estimating the energy consumption of different forms of motion using the three-dimensional accelerometer,the best wearing part of the 3d accelerometer is found.2.To explore the quantitative relationship between acceleration and energy consumption of different body parts of athletes in different sports,and adopt stepwise regression method to establish the energy consumption prediction equation of sports.Methods:The subjects were 102 student athletes majoring in sports,including 74 male athletes,with an average age of 18.5 plus or minus 5.5 years.The average age of 28 female students is 19.0 plus or minus 3.0 years old.The exercises performed by the subjects are divided into two types: one is general exercise,including four types of exercises,namely,static sleep,flat support,supine push and push-ups.Another kind is the special type sports,including the dragon dance lion dance,football,gymnastics,martial arts,sanda and wrestling,6 kinds of sport each special to include relevant to all three qualitative and selective sport.Each movement should adopt three or more different intensities,and the duration of each movement should not be less than 5 min.Before the exercise,three dimensional accelerometers were worn at the forehead of the subject,the middle of the left thigh,the waist,the middle of the upper arm of the upper arm,the left and right wrist joint,and the left and right ankle joint.gathering all kinds of sports in the process of the corresponding biological and physical signals,while wearing Meta Max 3b metabolism of portable gas meter measure its energy consumption.Descriptive statistics,correlation analysis and regression analysis were carried out on the collected data as well as Pearson correlation analysis between various indicators and energy consumption of the body.Results:1.Analysis on the correlation between the changes of three-dimensional acceleration in nine body parts and their energy consumption when university athletes exercise in different ways:Supine push and push-up push are mainly used for upper limb movement,and the two parts with high contribution rate in nine parts are right arm R2=0.283 and left arm R2=0.277.The right arm of the push-up is R2=0.287,and the left arm is R2=0.269.Football and other sports mainly involve lower limbs,and the two parts with high contribution rate in the nine parts are right ankle R2=0.317 and waist R2=0.311.For relatively soft full-body active qigong exercises such as baduanjin and taijiquan,the two parts with high contribution rate in nine parts are: right wrist R2 of baduanjin =0.245 and waist R2=0.219.The right wrist of taijiquan R2=0.239,and the waist R2=0.226.Basketball,calisthenics and other sports with high overall strength,the two parts with high contribution rate in nine parts: the waist R2 of basketball =0.344,and the right arm R2=0.340.Aerobics waist R2=0.350,right arm R2=0.343.2.The prediction equation of comprehensive energy consumption based on the values of counts-x,counts-y,counts-z and the vector counts-h of male and female subjects calculated in this study is as follows:Male: EC/s=-6068.7884+0.04953*counts-x+0.32293*BMI+0.50758*HREC/s=-6152.2663+(-0.02139)*counts-y+0.32830*BMI+0.50632*HREC/s=-6123.6069+(-0.02241)*counts-z+0.32730*BMI+0.50732*HREC/s=-6182.8212+0.04515*counts-h+0.32441*BMI+0.49800*HRFemale:EC/s=-4452.9847+(-0.02534)*counts-x+0.06636*BMI+0.53372*HREC/s=-4498.2832+0.00323*counts-y+0.06757*BMI+0.53433*HREC/s=-4454.0866+0.04672*counts-z+0.06576*BMI+0.53265*HREC/s=-4756.3288+0.08059*counts-h+0.06947*BMI+0.52146*HR Conclusion:1.When calculating energy consumption by using three-dimensional accelerometer in different motion modes,the best position should be worn: the upper arm movement is the main movement mode,and its optimal position is the right arm;In the movement mode of lower limb movement,the best wearing position is right ankle;The best wearing position is the right wrist;The best place to wear a full-body movement with relatively high intensity is the waist.2.This study constructed the comprehensive energy consumption model has higher fitting degree,the correlation coefficients of above 0.50,or 0.75 above,in the prediction of motion energy has good accuracy,can be applied to college athletes sports daily monitoring of energy consumption.