| Objective:In this experiment,two groups of subjects were trained in low-intensity resistance training of the extremities and conventional low-intensity resistance training to observe the changes in the core muscle groups of the trunk before and after training,and to analyze the impact of the compression training on the core muscle groups.Does compression training also have a significant cross-metastatic effect on core muscle groups,with a view to providing new ideas for rehabilitation for people with low back and high-intensity trunk muscles,such as patients with low back pain,spinal injuries,and the elderly and so on.elderly Training on improving core strength and stability provides new training ideas.Methods:Sixteen undergraduate students majoring in Sports Rehabilitation at Chengdu Institute of Physical Education in 2018 and 2017 were selected as experimental subjects.In order to rule out gender and age factors,male students aged 20-22 were enrolled in school.Sixteen subjects were randomly divided into the experimental group(N=8),the control group(N=8),and the control group received low-intensity resistance training.The experimental group was pressurized on the basis of this.Throughout the experiment,no personnel were lost,and the subjects did not have unacceptable reactions and no accidents occurred.Before the experiment,let all participants fully understand the entire experiment content and sign the informed consent,I fully understand the contraindications and indications of the use of experimental equipment.Subsequently,the subjects were collected raw data(height,weight,body composition),surface root mean square(RMS)test.constant speed muscle strength test(30°/sec,60°/sec,120°/sec peak torque PT,flexion/extension ratio,fatigue),eight-level abdominal bridge test.Changes in surface EMG were recorded during the first training session as experimental data before training.The two groups of subjects conducted 21 intervention exercises,3 times a week for a total of 7 weeks,each time guided by the same person,and the completion time of each training was controlled within 1h.The surface EMG data was recorded as the EMG during the last training session,and the constant speed muscle strength test(peak torque,flexion/extension ratio,fatigue),and eighth abdominal bridge test were performed again after training.Results:1.The core muscle group was effectively activated by compression training,as shown below:(1)Mean square root RMS of surface EMG in flexion,compared within the group,there was no difference between the straight muscle of abdomen and the external oblique muscle before and after training in the control group.Statistical significance(P?0.05).The difference between the straight muscle of abdomen muscle before and after training in the experimental group was statistically significant(P?0.01),and the difference in the external oblique muscle was statistically significant(P?0.01).There was no significant difference in the vertical spine muscle and musculi muscle between the two groups before and after training.(P?0.05).Comparison between groups,the difference between the experimental group and the control group before and after training was statistically significant(P?0.01),and the difference between the external obliques was statistically significant(P?0.05);the difference between the erector spine and the musculi muscle No statistical significance(P?0.05).(2)The mean square root RMS of the surface EMG of extensor movement was compared within the group.There was no significant difference in the erector spine and the musculi muscle between the control group before and after training(P?0.05).The difference between the erector spine muscle before and after training in the experimental group was statistically significant(P?0.01),and the difference in the musculi muscle was statistically significant(P?0.01).There was no statistical difference in the straight muscle of abdomen and external oblique muscles between the two groups before and after training.(P?0.05).The comparison between groups showed that the difference between the erector spine muscle before and after training in the experimental group and the control group was statistically significant(P?0.01),and the difference between the musculi muscle was statistically significant(P?0.05).No statistical significance(P?0.05).(3)The mean square root RMS of the surface EMG of standing leg extension movements was compared within the group.There was no significant difference in the erector spine and the musculi muscle between the control group before and after training(P?0.05).The difference between the erector spine muscle before and after training in the experimental group was statistically significant(P?0.01),and the difference in the musculi muscle was statistically significant(P?0.01).There was no statistical difference in the straight muscle of abdomen and external oblique muscles between the two groups before and after training.(P?0.05).The comparison between groups showed that the difference between the erector spine muscle before and after training in the experimental group and the control group was statistically significant(P?0.01),and the difference in the musculi muscle was statistically significant(P?0.01).No statistical significance(P?0.05).(4)Mean square root RMS of the surface EMG of the two motion surfaces of the bench press and knee extension of the device.Comparison within the group.Compared with the control group before and after training,the experimental group and the control group were compared with straight muscle of abdomen,external obliques,erector spine and the musculi muscle The difference was not statistically significant(P?0.05).There was no statistically significant difference between the experimental group and the control group before and after training in straight muscle of abdomen,external oblique,erector spine and the musculi muscle(P?0.05).2.(1)The constant speed strength of the trunk increased significantly due to compression of the extremities,as shown below:at the test angles of 30°/s,90°/s and 120°/s,the peaks of the flexor and extensor of the control group before and after training There was no statistically significant difference in the results of the torque test(P?0.05);there was a statistically significant difference in the results of the torque test of the trunk Flexor and extensor before and after training in the experimental group(P<0.05).There was a statistically significant difference between the two groups in the test results of trunk flexor and extensor peak torque after training(P?0.05).(2)The trunk flexion/extension ratio was compared within and between the two groups.There was no statistically significant difference before and after training(P?0.05),but there was a decrease in the value,and the decline in the experimental group was greater.(3)There was no significant difference in trunk flexor and extensor fatigue index before and after training(P?0.05),but the values decreased,and the decline was greater in the experimental group.3.The stability of the trunk core muscle group did not increase significantly,as shown below:Comparison between groups,there was no significant difference in the scores of the eight-level abdominal bridge test before and after training between the control group and the experimental group(P?0.05);comparison within the group There was no significant difference in the scores of the eight-grade abdominal bridge test between the control group and the experimental group before and after training(P?0.05).However,the values increased,and the degree of increase in the experimental group was greater.Conclusion:Low-intensity resistance training of pressurized limbs can effectively activate the prime mover in the training action,that is,on the basis of low-intensity resistance training,pressurized limbs have a positive effect on activating the core muscles of the trunk.The low-intensity resistance training of the pressured limbs significantly increased the constant speed strength of the subject's trunk flexion and extension,that is,based on the low-intensity resistance training,the pressured limbs had a cross-transfer effect on the strength of the trunk core muscle group.Low-intensity resistance training of compression limbs has a great tendency to improve the stability of the core area.Therefore,it is recommended to be used in rehabilitation training for patients with low back pain,spinal injury,and the elderly who need to improve the strength of the trunk muscle group. |
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