Study On The Method Of Human Stability Evaluation Based On The Static And Dynamic Balance

Balance ability is the basic condition to maintain the static or daily walking and other dynamic posture of the human body,and it is also a very important physiological function in the human body,especially in the process of most competitive sports.Due to the differences between individuals,the balance ability of different people will change with physiological changes.At the same time,the environment and other related factors will have a corresponding impact.The balance ability test can evaluate the balance ability level of the human body at this stage.In the field of medical rehabilitation,balance ability test can also make an important reference for the rehabilitation training of patients with balance disorder.Nowadays,the test scheme of balance ability is more and more standardized,but at the same time,many related derived indexes are derived,some of which overlap with each other,which makes the evaluation standard of balance ability more complex.In this paper,71 healthy young male subjects between the ages of 19 and 28 were initially recruited,excluding 10 patients with flat feet and one subject with severe ankle contusion in the past six months,and the remaining 60 subjects were tested for balance ability.The trajectory length,trajectory envelope area,unit area trajectory length,unit time trajectory length,left and right average velocity,left and right moving diameter,forward and backward shaking path,wavering bias,track position mean variance,left support phase,right support phase,left swing phase,right swing phase,left step size,right step size,step width,walking speed,walking rhythm,left foot deviation angle,There are 23 indexes in the deflection angle of the right foot.In the past,most of the subjects' static balance indexes were collected under the condition of closed eyes.However,the innovation of this paper is to combine the static and dynamic balance indexes.Unless the special population is or is limited by specific conditions,the human body usually keeps the visual system open when moving dynamically,so it does not choose to add the closed eye test when designing the experiment.After collecting the required indexes,Pearson correlation analysis was carried out many times through single factor variance analysis,and the most influential balance ability index was retained.Then,through the analysis of principal component analysis,three principal component factors which can replace the linear relationship of multiple equilibrium indexes are extracted.Finally,the scoring formula of human stability is obtained by weighting the principal component factors.Finally,Pearson correlation analysis proves that the scoring formula can effectively evaluate the stability of human.