| Objective: To understand the physical condition of the students in the third grade of Wenzhou Xiangyu Middle School through the pilot study of nutrition intervention.To explore the influence of nutrition intervention on physical fitness of students preparing for PE examination in the third grade;To explore how to arrange nutrition and exercise scientifically and rationally so that students can exert better ability in the physical education examination.Methods: 1)grade students in present situation investigation and self-induction survey before and after the intervention,the questionnaire survey as the main research methods,issue the school grade students in a total of 827 people with "wenzhou xiangyu school grade students in daily diet and exercise condition questionnaire" and "wenzhou xiangyu school grade students in understanding of the test period dietary nutrition survey questionnaire.A total of 80 people in the experimental group and the control group were distributed the "Self-feeling Survey of Students in the experimental group before and after the intervention",and the statistics and comparison of the questionnaire data were made.Excel was used to calculate and make charts to analyze the physical condition,diet and exercise status of students in the third grade of the school.2)Study before and after nutrition intervention,experimental study.Extraction grade(40 boys and girls 40)in 80 height,physical fitness,sports ability similar to students as the subjects,randomly divided into 2 groups,experimental group and control group,each group of the 20 men and women,using physical measurement,with 12 weeks as the experimental unit,the experimental group routinely add eggs,milk,21 Jin Wei he and other dietary nutrition and health bit sports supplement creatine powder + glucose solution.Before the experiment,6 weeks,12 weeks,recording the height and weight of the experimental group and control group,strength,speed,flexibility,agility and other physical quality data and examination results,examination project research group before and after the intervention of examination of body quality and project achievement change and comparison of the experimental group and control group in physical quality indicators and test the project performance changes,using SPSS statistical software(SPSS24.0)samples taken before and after the intervention and the experimental group 6 weeks,12 weeks of data for statistical analysis.Research results: 1)Most students keep three normal meals,but there is a big problem with dinner after sports.Most students go to the canteen without a rest or a short rest after taking part in a lot of sports,which will stimulate the digestive system greatly,which is very unhealthy behavior.2)Too much exercise and lack of physical energy lead to exercise fatigue,which is the main reason why the students of Grade 3 of this school do not choose dinner.3)After the big break in the morning and after the second class in the afternoon,86.62% of the students have hunger,which affects their study state and interest in sports.Therefore,extra meals are necessary.4)Students lack dietary nutrition knowledge,but they have a good attitude towards nutrition and show great interest in learning and acquiring dietary nutrition knowledge.5)23.58% of the students were physically substandard,of which 22.85% were lean(especially male students),5.20% were obese,and 1.45% were overweight.After nutrition intervention,the data of physical quality tests for three times showed that the proportion of students in the experimental group reached the standard of physical quality was higher than that in the control group.6)Through nutrition intervention,strength,speed and cardiopulmonary ability were significantly improved,and the students’ sports recovery was significantly improved after a large amount of exercise training.7)After 12 weeks of exercise intervention and scientific and reasonable exercise training,the scores of the experimental group in the middle school physical education examination increased sharply,with an average score of 28.75 in the first 12 weeks,33.4 in the sixth week and 39.025 in the 12 th week.Compared with the control group,the scores of the experimental group increased faster and stably.Research conclusion: Wenzhou Xiangyu Middle School students in the third grade diet nutrition and sports nutrition knowledge lack;Nutritional intervention has a certain influence on improving the physical fitness of the students preparing for the junior high school entrance examination and their scores in the senior high school entrance examination. |
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