Study On The Relationship Between The Ratio Of Finger Length Of Middle School Students And Ability To Learn Motor Skills Of Track And Filed

Studies have shown that human Second Finger Length(Second Finger Length,2 d)and the Fourth Finger Length(Fourth Finger Length,4 d)Ratio(Digit the wire of 2 d and 4 d,2 d: 4 d)and motor ability has a close contact.Regardless of the gender is male or female,refers to long than has nothing to do with the development of the day after tomorrow.2 d: 4 d is shown testosterone concentrations have finalize the design before birth,testosterone concentrations may affect the brain's right hemisphere and spatial cognitive ability.Is longer than the human finger is the most extensive study of the 2 d: 4 d,the research has been taken seriously by biology.Current international 2 d: 4 d has the certain research,and for the 2 d: 4 d study reported little relationship with sports skill,particularly with athletics skill basic not reported.Motor skill learning ability is very important to physical education and sports training,so the 2 d: 4 d and the relationship between the motor skill learning to improve the quality and efficiency of motor skill learning has the very vital significance.In order to verify the hypothesis,this study investigated the middle school students of 2 d: 4 d,and explore its relationship with the track and field sports skill learning.Subjects:This study in the school and students,the informed consent in Peng Zhou,Si Chuan province to investigate nine feet high school,the total number of 518 people,with the hand,the finger injury excluded 11 people and photos is not clear,effective number of a total of 507 people.Randomly selected in the effective number of 240 people,the skill learning and assessment.Skills criteria for A(100-90);B(89-80);C(79-70);D(69-60);E(59-0)five levels.Methods: The hands of the relaxation subjects were placed on a glass plate 3mm thickness,and the pictures of their labeled palm were taken by a Le 2s phone 30 cm away form the glass plate.To test the repeat ability of our measurements.Will be 240 people randomly divided into 6 groups,each group of 40 people,to learn the swing arm,rack,high leg lifts,after running for training cintent,teaching for 10 minutes at a time,students practise for 10 minutes,then immendiately for technical evaluation.Results: There were following results in this thesis.1.Jump:Takeoff(pedal)action skill rating group A male,female right refers to the length ratio(RR)and the skill evaluation scores correlation coefficient is-0.930 and-0.842 respectively,significance test,P = 0.000 and P = 0.000,P < 0.01,there is high correlation.Takeoff(pedal)action skill rating than male,the female left hand refers to the length of group A(LR)and technical evaluation results the correlation coefficient is-0.843 and-0.792 respectively,significance test,P = 0.000 and P = 0.000,P < 0.01,there is high correlation and moderate correlation.Results show that a boy and a girl means lower than(RR,LR)long,of the(pedal)the higher the number of successful,skill evaluation scores,the better,is a sport skills,ability to learn,the better.Male and female finger length ratio(RR)and motor skill learning ability is negative correlation.2.Run:(1)the skill rating group A swing arm of male and female finger length ratio(RR)and the skill evaluation scores correlation coefficient is-0.709,respectively--0.733,significance test,P = 0.000,P = 0.000,P < 0.01,there is A moderate correlation.(2)jogged up skill rating A group of male,female right refers to the length of ratio(RR)and the skill evaluation scores correlation coefficient is-0.694,respectively--0.468,significance test,P = 0.001,P < 0.01 and P = 0.037,P < 0.05,there is moderate correlation and low correlation.(3)push run skill rating after A group of male,female right refers to the length of ratio(RR)and the skill evaluation scores correlation coefficient is-0.461 and-0.483 respectively,significance test,P =0.041,P = 0.031,P < 0.05,there is low correlation.The results showed that male and female long finger ratio(RR)is lower,the corresponding action skill evaluation scores,the better,is a sport skills,ability to learn,the better.Male and female finger length ratio(RR)and motor skill learning ability is negative correlation.3.Throw:Throwing skill rating refers to A group of male and female right hand length ratio(RR),respectively,and the skill evaluation scores correlation coefficient is-0.843,respectively--0.792,significance test,P = 0.000,P = 0.000,P < 0.01,there is high correlation and moderate correlation.The results showed that male and female right refers to the length of the lower the ratio(RR)corresponding throwing skill evaluation scores,the better,is a sport skills,ability to learn,the better.Male and female finger length ratio(RR)and motor skill learning ability is negative correlation.Conclusion:In track and field events,whether it's track(run),or A field(jumping,shooting)projects,especially in the jump in the project,the skill rating group A male and female right refers to the length,the lower the ratio(RR),movement skill evaluation scores,the better,learning ability,the better.Thus infer,male,female right refers to the length ratio(RR)is lower,the higher the efficiency of motor skill learning,and motor skill learning ability,the better,so that long than(2 d: 4 d)negative correlations with athletics skills,ability to learn.