| Purpose: Type A cross syndrome is teenagers under abnormal posture is relatively common,because long-term sedentary in the dorsal strain of thoracic lumbar extensor and is located in the ventral tension before and after the iliopsoas muscle,the rectus stocks crossed,ventral deep weak muscles and weak glutes,before and after of middle cross.Therefore,this study was conducted to assess the body posture of elementary school students,analyze the characteristics of A-type lower-crossed syndrome,create an exercise intervention program and evaluate the results of the intervention to give elementary school pupils with a scientific basis for exercise correction.A-type lower-crossed syndrome,maintain their normal body posture and promote their normal growth and development.Methods: The study for this work was conducted using a variety of methods,including literature reviews,expert interviews,the Delphi method,questionnaire surveys,and experiments.A questionnaire was designed based on the pre-reading literature and survey interviews with experts and scholars,and a two-round survey of experts was conducted through the Delphi method to develop an exercise intervention program for elementary school students with type A-type lower-crossed syndrome.Recruited 77 subjects participated in the experiment,the control group 36 of them without any intervention,41 participants participated in the experimental group’s 12-week fitness intervention to assess the program’s effectiveness.,using The PA200 LE physical assessment instrument and joint mobility goniometer were used to collect data on changes in anterior pelvic angle and hip mobility,and Myoton PRO digital elastography was used to collect data on changes in tension,stiffness,and elasticity of the rectus femoris and erector spinae muscles of the subjects.The collected data were analyzed using repeated measures ANOVA with P<0.05 as the significant level.The results of the study:(1)Through body posture screening,it was found that a total of52.18% of the students in grades 3-6 of the West Campus of Weiming Road Primary School in Shijiazhuang City had type A lower cross syndrome posture,and the incidence rate in senior grades was higher than that in lower grades,and the incidence rate in boys was higher than that in girls.(2)Through two rounds of the Telfi method,the exercise intervention program for primary school students with type A lower cross syndrome was finally established,including 3 firstlevel indicators,7 second-level indicators and 18 tertiary indicators,and a 12-week exercise intervention was carried out to test the effect of the exercise intervention program.(3)After 12 weeks of exercise intervention,the anterior pelvic tilt angle of the experimental group decreased(P<0.01),the control group increased(P<0.01),and the experimental group was smaller than the control group(P<0.01).(4)After 12 weeks of exercise intervention,the range of hip flexion in the experimental group increased(left P<0.01,right P<0.01),the control group decreased on the left side(P<0.05),the right side did not change significantly(P>0.05),both sides of the experimental group were greater than the control group(P<0.01),and there was no difference between the left and right sides of hip flexion range in the two groups(P> 0.05);The range of motion of hip extension increased in the experimental group(left P<0.01,P<0.01),the control group did not change significantly(left P>0.05,right P>0.05),both sides of the experimental group were greater than the control group(P<0.01),and there was no difference between the left and right sides of hip retroextension range of motion in the two groups(P>0.05).(5)After 12 weeks of exercise intervention,the rectus femoral muscle tone in the experimental group decreased(left P<0.01,right P<0.01),the control group did not change significantly(left P>0.05,right P>0.05),both sides of the experimental group were smaller than the control group(left P<0.01,right P<0.01),and there was no difference in left and right sides of rectus femoral tone between the two groups(P>0.05);The firmness of rectus femoral muscle decreased in the experimental group(P<0.01 on the left and 0<.01 on the right),the change in the control group was not significant(P>0.05 on the left,P>0.05 on the right),the two sides of the experimental group were smaller than those in the control group(P<0.01),and the left and right sides of the rectus femoral muscle hardness were not different(P>0.05).The left side of rectus femoral muscle elasticity increased(P<0.01)in the experimental group,the increase was significant(P<0.01)in the right experiment,and the increase was not significant(P>0.05)after the experiment,both sides of the experimental group were greater than those in the control group(P<0.01),and the left and right sides of the rectus femoral muscle elasticity of the two groups did not have significant differences(P>0.05).(6)After 12 weeks of exercise intervention,the erector spinal muscle tone in the experimental group decreased(left P<0.01,right P<0.05),there was no significant change on the left side of the control group(P>0.05),the right side increased(P<0.05),both sides of the experimental group were smaller than the control group(P<0.01),there was no difference in the left and right sides of the erector spinal muscle tone in the experimental group(P>0.05),and there was a difference in the left and right sides of the erector spinal muscle tone in the control group(P.0.05 <0.05);the stiffness of the erector spinus muscle in the experimental group decreased(P<0.01 on the left and 0<.05 on the right),the change in the control group was not significant(P>0.05),the two sides of the experimental group were smaller than those in the control group(P<0.01),the left and right sides of the erector spinal muscle stiffness in the experimental group were not different(P>0.05),and the left and right sides of the erector spinal muscle hardness in the control group were different(P <0.05);the elasticity of the erector spinal muscles in the experimental group increased(left P<0.05,the right P<0.05),the control group did not change significantly(left P>0.05,right P>0.05),the left and right sides of the experimental group were greater than those of the control group(P<0.01),the left and right sides of the experimental group did not have significant differences(P>0.05),and the control group had significant differences in the left and right sides of the erector spinal muscle elasticity(P0.05).<0.05)。Conclusions:(1)The incidence of type A lower cross syndrome is higher in primary school students,and it is found that there are age and sex differences in the incidence of type A lower cross syndrome in experimental schools,and the incidence rate of upper students is higher than that of younger students,and the incidence of boys is higher than that of female students.(2)The crying content of the primary school students’ type A lower cross syndrome exercise intervention program was constructed,including 3 first-level indicators of tension muscle relaxation,weak muscle strength exercise,joint flexibility exercise,7 secondary indicators such as hip flexor muscle group fascia release,extensor lumbar fascia release,hip flexor muscle group stretching,lumbar muscle group stretching,fascial ball rectus femoral muscle release,fascial ball hip adductor muscle release,fascial ball erector spinal muscle release,fascial bulb latissimus release and other 18 third-level indicators.A type A lower cross syndrome exercise intervention program for primary school students has been developed scientifically and comprehensively.(3)Through 12 weeks of exercise intervention,the observation indexes of the experimental group were significantly improved,the anterior angle of pelvic tilt was reduced,the range of motion of the hip joint was increased,and the muscle tone,hardness and elasticity of the rectus femoris and erector spine muscles were improved,which had a good effect on correcting the lower cross syndrome of primary school students.(4)Most of the observed indicators in the control group did not change significantly,and even had a tendency to deteriorate,and the erector spinal muscle appeared asymmetric on both sides. |
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