Effect Of Metronome Based Low Velocity Loss Strength Training On Lower Limb Explosive Power Of Male College Students

Research purposes: This study compared the effects of metronome-based low velocity loss strength training and traditional strength training,analyzed the changes of the lower extremity explosive force and maximum strength index of the subjects after 8 weeks of training,hoping that under the condition of shortage of speed measuring equipment,large number of trainees and limited training time,A simple and effective personalized training organization implementation scheme based on speed strength training theory is explored.Research methods: This paper adopts the methods of literature,experiment and mathematical statistics to carry out the research.A total of 30 undergraduates or postgraduates with certain strength training experience are mainly selected from Capital University of Physical Education,and the subjects are all male.Thirty subjects were randomly divided into two groups: the metronome-based low velocity loss strength training group(15)and the traditional strength training group(15).The load intensity of each training in the experimental group was adjusted according to the target speed determined by the pre-established loadvelocity profile to ensure that the actual training load intensity reached 80%1RM.Before 8weeks of formal training,the metronome controlled speed(1s in the centripetal stage,1s in the centrifugal stage)under the metronome control speed test and 5 groups of free weight squat frequency test to reach the low velocity loss threshold(VL10),and analyzed the change trend of the number of repetition,as the experimental group of 8 weeks of training load arrangement basis.In the control group,5 groups of free weight squats were performed at 80%1RM load weight,and each group was repeated 5 times.Before formal training,the actual situation of the subjects’ lower limb explosive power and maximum strength was analyzed,and the changes of maximum strength were understood after 4-week training.After 8-week training the test results of lower limb explosive power and maximum strength were obtained and compared.Research results:1.After 4 weeks of formal training,the maximum strength increased significantly(P<0.01).Compared with the target speed corresponding to 80%1RM of the individualized loadvelocity profile before training and 4 weeks after training,it was found that there was no significant difference(P>0.05),and the individualized load-velocity profile was stable.2.There was significant difference among subjects in the maximum number of completions in the experimental group(P<0.01).The repetitions of the 5 groups that reached the low velocity loss threshold had significant differences(P < 0.05)except that there was nod significant difference between groups 1 and 2(P>0.05),and the repetitions of the other groups had significant differences(P>0.05).By analyzing the percentage of maximum completable times of the 5 groups,it was found that there were significant differences in the percentage of completable times of the other groups under pair-to-pair comparison(P<0.05)except that there was no significant difference between groups 1 and 2(P>0.05).3.After using two different strength training methods,the maximum strength of the experimental group and the control group showed a very significant increase(P<0.01).After comparing the results of strength training between the two groups,it was found that the maximum strength of lower extremity increased more in the experimental group,but there was no significant difference between the two groups(P>0.05).4.After the two different strength training methods were used,the jumping height of the center of gravity and the relative maximum power of the experimental group showed a very significant difference(P<0.01),the jumping height of the center of gravity of the control group showed a significant increase(P < 0.05),the relative maximum power did not show a significant change(P>0.05).After comparing the results of strength training between the two groups,it was found that there were significant differences in explosive power indexes between the experimental group and the control group(P<0.05).Research conclusions:1.After 4 weeks of strength training,the maximum strength increased,but there was a stable relationship between relative load and speed,and no need to re-establish the individualized load-speed profile.2.When free weight squat was completed under the control of metronome rhythm,there were individual differences in the maximum number of completions,the number of repetitions in 5 groups and the percentage of completions in the experimental group.Therefore,the percentage of completion times in group 1(49.95%),group 2(47.07%),group 3(38.54%),group 4(32.59%)and group 5(21.19%)was used to calculate the number of repetitions in each group of subjects.3.Metronome based low velocity loss strength training can improve the maximum strength of lower limbs similar to traditional strength training,but it is more economical and efficient.4.The effect of metronome-based low velocity loss strength training on lower limb explosive power is better than traditional strength training...