Research The Correlation Of Physical Fitness Indicators And Maxymal Oxygen Uptake On High Schoolboys

Objects: Try to find out the state of physical fitness of the high schoolboys in Changsha area and the differences between cities and rural areas. Analyze the correlation between the physical fitness indexes with VO₂max, and then indirectly extrapolate VO₂max by the multiple linear regression equation. In order to make up for a deficiency result from lacking of enough researches above. This paper offer a more scientific and reasonable experimental basis for helping to evaluate their cardiorespiratory function and the level of physical fitness, giving students, teachers and parents a more convenient and effective measure. Foremost, all above can promote stduents to strenghen sports physical training, enhance their health, reinforce their physical fitness, and boost the whole nations' healthy qualities development.Subjects and methods: The subjects are 240 totally, which are taken from high schools , ranged grade one from grade two respectively. Use the theories and methods of the sports physiology and the sports measurement to measure body configuration, cardiovascular function, respiratory function, endurance capacity; measured VO₂max of the subjects directly. Deal with the data using statistical treatment such as comparing the mean after the experiment, analyze correlation among them, do the regression analysis and so on.The results show that:1.The growth of the body configuration of subjects inclines to mature tardy in rural area of Changsha than in city. But the indexes of their body configuration match apparently up to their pulmonary ventilation function, endurance qualities and maximal oxygen uptake. Furthermore, most of correlation coefficient of indexes are greater than 0.7(P<0.01). 2.Pulmonary ventilation functions of the subjects in rural area of Changsha are inferior to that in city and the relativity of the maximum voluntary ventilation and VO₂max matched moderately. These can be view as kinds of dynamic index, which indicate that it can be used to test the level of the lung function of the subjects.3.Step index, which has no statistics relativity with the VO₂max, the 1000m run and the 12min run, can not reflect discipline of ageing change. That means the step index can not precisely reflect the level of endurance capacity and cardiovascular function of the subjects.4.The endurance capacity of the subjects are not as good in rural area of Changsha as that in city. The correlation coefficient between the 1000m and the maximal oxygen uptake is r= -0.716,is high negative correlation(P<0.01).Similarly, the correlation coefficient between the 1000m run and the 12min run is r= -0.77,is high negative correlation too(P<0.01). That means that both 12min run and 1000m run can be a substitute for each other.5.The multiple regression equation established by the 1000m run, 12min run and index of body configuration, which can be put into practice for forecasting the maximal oxygen uptake of the high schoolboys in Changsha area.