Research On Speculation Adults' Intensity Of Anaerobic Threshold Aged 20-59 By Simple Method

Objective: Anaerobic threshold is an important indicator which has its unique advantages when evaluating cardiopulmonary endurance.It has a broad application prospect in the popular scientific fitness guidance.The study will explore the feasibility of using 20-meter shuttle run test and 6-minute walking test to individually estimate the anaerobic threshold intensity of adults aged 20-39 and 40-59,and establish the corresponding regression equation and scientific validation.Develop new indicators that can be used to guide the popular scientific fitness,and enrich the indicators and application prospect of field test,so that anaerobic threshold index could be widely applied in the national fitness and popular scientific fitness could be better guided.Methods: The total number of subjects is 631.285 adults aged 20-39 to speculation adults' intensity of anaerobic threshold by 20-meter shuttle run test,30 adults to back on behalf of the regression equation,286 adults aged 40-59 to speculation intensity of anaerobic threshold by 6-minute walking test,30 adults to back on behalf of the regression equation.Test body shape function of the subjects after collecting the basic information such as gender,age and exercise habits.Test indicators include height,weight,vital capacity and grip strength.20-meter shuttle run test(20-39)and 6-minute walking test(40-59)are chosen as field test.Conducted the GXT(Graded Exercise Test)using a cycle ergometer,with a gaseous metabolism analyzer collecting gaseous metabolism index,and used V-slope method to calculate the anaerobic threshold(VT).With the help of SPSS,VT as a dependent variable,field test scores and related indicators as independent variables,established the corresponding regression equation using stepwise regression and validated it.Results:(1)The level of 20-meter shuttle run test is moderate correlated with VT,r = 0.602(P<0.01).The regression equation of intensity 20-39 adults' anaerobic threshold is: VT(L/min)=-0.266 + 0.055 * level + 0.009 * weight + 0.087 * exercise condition+5.49 * 10-5 * vital capacity(R=0.786,adjusted R2=0.613).(2)6-minute walking test has a low correlation with VT,r = 0.249(P < 0.01),and the validity regression equation is poor.Conclusion:(1)20-meter shuttle run test to estimate the anaerobic threshold intensity of adults aged 20-39 is feasible and the regression equation fits very well.(2)6-minute walking test to estimate the anaerobic threshold intensity of adults aged 40-59 is not feasible.