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Correlation Between Isokinetic Muscle Strengh And Ratio (H/Q) And 100m Score Of Anterior And Posterior Thigh Muscles

Posted on:2019-05-21Degree:MasterType:Thesis
Country:ChinaCandidate:Y N RenFull Text:PDF
GTID:2417330566978480Subject:Physical Education
Abstract/Summary:PDF Full Text Request
Objective:to explore the relationship between the isokinetic muscle torque of the front and rear thighs of male college students with a certain level of sprint and the performance of 100 m sprint,so as to provide some theoretical basis and practical guidance for amateur sprint speed training.Research methods and objects: through testing,The isokinetic muscle torques of 15 male college students with 100 m close to the level of second-level athletes were measured at 120 °/ s / s 180 °/ s and 240 °/ s angular velocities respectively by using the ISOMED2000 isokinetic test instrument.And SPSS software for statistical processing and results analysis.Methods: through testing,The isokinetic muscle torques of 15 male college students with 100 m close to the level of second-level athletes were measured at 120 °/ s?180 °/ s and 240 °/ s angular velocities respectively by using the ISOMED2000 isokinetic test instrument.And SPSS software for statistical processing and results analysis.Results :(1)At 120 °/ s angular velocity,the correlation coefficients between relative peak torque and acceleration energy and 100 m performance of non-dominant thigh were-0.676(p < 0.01)?-0.349 and-0.591(p < 0.05)?-0.337,respectively.The relative peak torque and acceleration energy of extension were-0.676(p<0.01)?-0.349 and-0.591g(p<0.05)?-0.33),respectively.The relative peak torque and torque acceleration energy of the dominant side of thigh were higher than 0.05,respectively.The correlation coefficients of peak torque and torque acceleration energy with 100 m performance were-0.134?0.063 and-0.210?-0.073,respectively.(2)At 180 °/ s angular velocity,the relative peak torque and torque acceleration energy of non-dominant thigh flexion,extension and acceleration energy were-0.381?-0.432 and-0.380?-0.148,respectively.The correlation coefficients between the relative peak torque and the acceleration energy of the dominant side of thigh and the 100 m performance were-0.066?0.207 and-0.283?0.180,and the P values were both greater than 0.05.(3)At 240 °/ s angular velocity,the relative peak torque and torque acceleration energy of non-dominant thigh flexion,extension and acceleration energy were-0.612?0.231 and-0.498?-0.21919,respectively.The relative peak torque and torqueacceleration energy of the dominant side of thigh were higher than 0.05.The correlation coefficients of peak torque and torque acceleration energy with 100 m performance were-0.335?-0.028 and-0.435?-0.125,and the P values were both greater than 0.05.(4)At 120 °/ s at angular velocity,The correlation coefficients between peak torque flexion and extension ratio of non-dominant side and 100 m score were-0.346 and-0.200,respectively.The correlation coefficients between(H/Q)and 100 m score of non-dominant side and dominant side were-0.404 and-0.259,and the P values were both greater than 0.05.(5)At 180 °/ s at angular velocity,the correlation coefficient of the peak torque flexion and extension ratio(H/Q)and the 100 m performance of the subjects on the non dominant side and the dominant side of the upper thigh(H/Q)were respectively-0.247 and-0.351(H/Q)and the 100 m results,and the P values were both greater than0.05.(6)At 240 °/ s angular velocity,the correlation coefficients between the peak torque,flexion and extension ratio of the non-dominant side and the 100 m performance were-0.416 and-0.303,respectively.The correlation coefficients between non-dominant and dominant thigh torque acceleration energy ratio(H / Q)and 100 m performance were-0.130 and-0.274 p,,and the P values were both greater than 0.05.Conclusions :(1)In the male college students with a certain level of sprint,the isokinetic and torque acceleration energy of the moderate flexor muscle on the non-dominant side of the thigh was negatively correlated with the score of 100 m and had significant significance.It can be seen that strengthening the maximum strength training and explosive force training of non-dominant flexor muscle has a positive effect on the improvement of sprint performance.(2)Compared with the dominant side,the strength and torque acceleration of flexor and extensor of thigh in non-dominant side were significantly higher than those in the dominant side,and the correlation between the strength and torque acceleration of flexor and extensor of thigh was higher.This indicates that the strength of non-dominant flexor and extensor muscle is one of the limiting factors to improve the performance of sprint.From the point of view of training,increasing the strength of non-dominant flexor and extensor muscle is more practical and instructive than bilateral synchronous development.(3)With the increase of testing speed,the correlation between the isokinetic musclestrength and torque acceleration energy of the non-dominant thigh flexor muscle and the 100 m score showed a decreasing trend.Therefore,with the increase of exercise speed,the effect of flexor muscle strength on 100 m performance is decreasing gradually.(4)Under different testing angular velocities,the correlation between the isokinetic muscle strength of the flexor muscle of the thigh and the performance of 100 meters was generally higher than that of the extensor muscle both in the dominant side and in the non-dominant side.Therefore,flexor muscle strength is more significant than extensor muscle strength on 100 m running performance.(5)Under different testing angular velocities,the ratio of flexion and extensor strength and torque acceleration energy of superior or non-dominant side was generally low correlation with 100 m performance,and there was no significant difference.
Keywords/Search Tags:isokinetic force measurement system, H/Q, explosive force, maximum force
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