| Coordination is the comprehensive performance of human body quality evaluation.Studies have confirmed that coordination is affected by genetic factors,and its development degree is related to the lack of physical exercise in the key period.The development of coordination caused by lack of exercise can be effectively improved through acquired exercise.Students aged 9-10 are at the peak of coordination development,and coordination related training at this age can achieve the best results and give full play to their athletic potential.While calisthenics and pattern rope skipping belong to the whole-body aerobic exercise,they will be accompanied by music,complex movements,beautiful posture into the rhythm of the music,loved by girls.Making the movement smooth and beautiful requires higher coordination degree of upper and lower limbs.Aerobics presents the control of form,the transformation of space and the transformation of more diversified movements throughout the whole technical movements.In contrast,synchronized rope skipping requires continuous,high-frequency movements with precise control of hands and feet.According to the teaching for students in aerobics and figure rope skipping,this article explores the differences on balance ability,concerted action,spatial orientation,rhythm ability and body coordination of 9-10 years old girl respectively,to develop students’ physical coordination,fully balanced development physical quality,and enhance students’ physical health.At the same time,it also provides reference for promoting the popularity of calisthenics and variety jump rope in primary and middle school PE classes and enriching the teaching content of PE teachers.Research methods:This paper adopts the methods of literature,questionnaire,experiment,mathematical statistics and so on.Girls aged 9 to 10 in three classes of grade 4 in Nanguo Primary School in Guangzhou were selected as experimental subjects.The students who met the experimental requirements were randomly divided into aerobics group,synchronized rope skipping group and routine course group.The students were taught for 40 minutes twice a week for 8 weeks.Before and after the experiment,various indicators were tested,including balance ability(straight walking with heel raising,standing on one leg with eyes closed),coordinated movement(cross tapping,square jumping,shoulder stretching touch,hand reaction),spatial orientation(straight walking with circle in place)and rhythm ability(running and jumping with rhythm).Univariate an OVA was used between groups,paired T test was used for intra-group comparison before and after,and the test data were statistically analyzed.Research results:1.The balance ability of three groups of students was compared before,after and after the experiment.Before and after the experiment,there were significant differences among the three groups(P < 0.01).There was significant difference in closed eye and single leg aerobics group(P < 0.05).After the experiment,there were significant differences between the aerobics group and the control group(P < 0.01).2.The three groups of students were compared before,after and after the collaborative action experiment.Before and after the experiment,there was a significant difference between aerobics group and pattern rope skipping group(P <0.01).There was significant difference between shoulder stretching touch aerobics group and pattern rope skipping group(P < 0.01).After the experiment,there was a significant difference between the aerobics group and the control group(P < 0.01),and there was a significant difference between the synchronized skipping group and the control group(P < 0.05).Compared with the control group,there were significant differences in square jumping,aerobics and pattern skipping(P < 0.05).3.The three groups of students were compared before,after and after the spatial orientation experiment.Before and after the experiment,there were significant differences between the aerobics group and the pattern rope skipping group(P < 0.01).After the experiment,there were significant differences among the three groups(P <0.01).4.Comparison of students’ rhythm ability before,after and after the experiment.Before and after the experiment,there was no significant difference between the three groups(P > 0.05).After the experiment,the difference of rhythm running and jumping,aerobics group and pattern rope skipping group was very significant compared with the control group(P < 0.01).Research conclusions:(1)The effect of aerobics teaching on 9-10 year old girls’ body coordination is obvious in static balance,dynamic balance,body coordination ability and orientation ability.(2)The effect of pattern skipping teaching on 9-10 year old girls’ body coordination is obvious in terms of dynamic balance and body coordination ability.(3)The effect of aerobics teaching and pattern jump rope teaching on the body coordination of 9-10 year old girls has a certain similarity in coordination and rhythm ability.However,in terms of balance ability and spatial orientation,aerobics teaching is better than pattern skipping teaching.(4)In terms of the influence on the physical coordination development of 9-10 year old girls,aerobics and pattern skipping are better than conventional courses. |