Association analysis between extracurricular physical activity and dyslipidemia among primary, middle and high school students in Guangzhou

BackgroundAllergic diseases, such as asthma, dermatitis, rhinitis, and eczema, are highly prevalent in Chinese school children. Environmental factors, including air pollution and automobile exhaust, play an important role in the etiology of these diseases. However, prenatal and neonatal factors, such as gender, maternal diseases during pregnancy, and premature birth, may also be associated with allergic disease occurrence. The objective of this study was to explore prenatal and neonatal factors that are involved in the development of allergic diseases among primary and middle school students in Guangzhou, China.MethodsA cross-sectional survey was launched by the Health Promotion Centre for Primary and Secondary Schools of the Guangzhou Municipality in October 2017. All primary and middle school students in Guangzhou were notified to participate in the questionnaire online under the direction of their parents. The results of the physical examination were reported by the schools’ medical department. The results of the questionnaire were collected and analyzed by the researchers. The prevalence of asthma, allergic rhinitis, allergic dermatitis, and eczema was identified.ResultsBased on reported 183,449 questionnaires and medical records, the data indicate that the sex, birth weight, neonatal feeding type, delivery mode, and students’ father smoking status were significantly associated with the prevalence of all four allergic diseases in primary and middle school children. In further stratified analyses of the children with normal birth weight (2500–4000 g) and without any maternal diseases during pregnancy, the factors of male sex, high birth weight, cesarean delivery, and father smoking status all increased the risk of asthma, dermatitis, rhinitis, and eczema. Also, unlike exclusive breastfeeding, breast plus formula feeding increased these risks, but pure formula feeding had the opposite effect.ConclusionPrenatal and neonatal factors, including male sex, high birth weight, cesarean delivery, only child, and father smoking status are associated with the risks of allergic diseases in school children.

To analyze and describe the status and characteristics of using electronic screens of primary and middle school students in China from 2016 to 2017. From 2016 to 2017, 275 monitoring points were selected from 31 provinces in China, and 280 primary and middle school students were selected from each monitoring point to complete the survey. Using the suggestion from "Healthy China Initiative(2019-2030)"of which the screen time of primary and middle school students should be less than one hour per day as the standard. A total of 74 314 primary and secondary school students(except grade 9 and grade 12) were included in this study. Among them, there were 37 147 boys(50.0%) and 37 167 girls(50.0%); 44 612 pupils(60.0%), 14 858 junior school students(20.0%), and 14 844 senior high school students(20.0%); 38 995(52.5%) rural students and 35 319(47.5%) urban students; 53 287 boarding students(71.7%) and 20 537 day students(27.6%). From 2016 to 2017, the average daily screen time of Chinese primary school students was 1.45 hours, M(P25, P75) was 1.14(0.57, 1.93) h. That of junior high school students was 1.92 hours, M(P25, P75) was 1.43(0.71, 2.48) h. That of senior high school students was 2.37 hours, M(P25, P75) was 1.71(0.90, 3.02) h. The average daily screen time qualified rates of primary school, junior high and senior high school students were 46.1%, 37.1% and 27.7%, respectively. From 2016 to 2017, the most used electronic screen products of primary school students in China were TV/videos(62%), followed by mobile phones(21%). Junior high school students spent 38% and 37% of the total time watching TV/videos and playing mobile phones, respectively. High school students spend the longest time using mobile phones(49%) of the total time, followed by watching TV/videos(26%). With the increasing of grade, screen time became longer, and screen time qualified rate dropped. Moreover, the most used electronic screens were mobile phones and TV/videos.

This paper is used to know about the psychological health situation for middle and primary school students in Xianning City and provide a certain empirical basis for meaningful development of psychological health education and psychological assistance. This paper uses the MHT scale prepared by Bucheng Zhou professor et al. to conduct a test for 1000 students in 7 middle and primary schools in Xianning City. The detection rate of psychological health problem accounts for 1.6% where the positive detection rate of study anxiety ranks first (43.2%). The psychological health situations have much difference in sex (t = -4. 624, P<0. 001), and it’s lower in male students than female ones. There is a significant difference between the psychological health situation for only and non-only children (t = -2. 519, P<0. 01).There is a significant difference on the psychological health situation for primary school, middle school and high school students (F = 11. 3, P<0. 001), and the psychological health situation of primary school students is better than that for middle school students. It can be concluded that the psychological health situation of middle and primary school students in Xianning City is fairly good, and the psychological health situation for male student, only children and primary school student is also fairly good.

A cross-sectional study on the analysis of the current situation of depression and anxiety among primary and secondary school students in Urumqi City in 2021: A case study of S district

Objective To understand the prevalence and trend of the poor eyesight in primary and middle school students in Beijing, and to provide theoretical basis for eyesight protection and myopia prevention and control. Methods According to “Technical Standard for Student Health Inspection” (GB/T 26343–2010), students were examined with a standard logarithmic visual acuity E chart for naked eye vision. Results The prevalence of poor eyesight among primary and middle school students in 2010-2016 was 63.0%, 62.1%, 62.9%, 60.7%, 59.2% and 58.6% respectively, decreased by 7.0% in 6 years, primary school students dropped by 9.7%, and junior school students, senior high school students and vocational high school students increased by 5.5%, 3.3% and 14.1% respectively. Urban and suburban areas (61.2%, 54.3%) decreased by 9.6% and 2.9% respectively. Regardless of boys and girls, urban and suburb, between 2010 and 2016, the overall composition ratio of students in each school segment was expressed as primary school > junior school > senior high school students > vocational high school, and vocational high school students accounted for the minimum; the overall composition ratio of primary school has become more and more large. Conclusion Eyesight protection and myopia prevention among primary and middle school students in Beijing is still challenging. All departments should take active and effective measures to control the newly onset and progression of low vision and improve eyesight. 【摘要】 目的 了解北京市中小学生视力不良检出率及变化趋势, 为学生视力保护及近视防控提供参考依据。 方法 按照《学生健康检査技术规范》 (GB/T 26343—2010), 采用标准对数视力表对北京市全体中小学生进行裸眼远视力检査。 结果 2010—2016 年北京市中小学生视力不良检出率分别为 63.0%, 62.1%, 62.9%, 60.7%, 59.2% 和 58.6%, 6 年间下降了 7.0%。2015—2016 年小学生、初中生、普通髙中生、职业髙中生视力不良检出率分别为 45.5%, 78.4%, 89.4%和74.5%, 较 2010—2011 年小学生下降了 9.7%, 初中生、普通髙中生和职业髙中生分别增长了 5.5%, 3.3% 和 14.1%; 2015—2016 年, 城 区、郊区学生视力不良检出率分别为 61.2% 和 54.3%, 较 2010—2011 年分别下降了 9.6% 和 2.9%。不论男生、女生, 城区、 郊区, 2010—2016 年, 每年各学段学生总体构成比均表现为小学>初中>普通髙中>职业髙中, 职业髙中学生占比最小; 随着 年份的增加, 小学的构成比增大。 结论 北京市中小学生视力不良防控工作任务艰巨。各部门应采取积极有效的措施, 控 制视力不良新发和加重, 提髙中小学生视力健康水平。

Objective To understand the current situation of breakfast consumption and its influencing factors in primary and middle school students in a poor rural area in a city in Guizhou Province, and to provide scientific basis for child nutrition education and intervention. Methods A stratified cluster sampling method was used to conduct a questionnaire survey of breakfast behavior and influencing factors among 2 833 students from 3 primary schools and 3 middle schools in a area of Guizhou Province from April to June 2019. Results The most frequently consumed breakfast was rice noodle products (71.66%), followed by fresh vegetables (45.89%), milk (35.55%), meat/egg/fish (29.33%), beans (19.52%), and fresh fruits (18.74%). The proportion of having breakfast everyday among elementary and middle school students who was 62.97%, and having breakfast 4 一 6 days peer week was 22.80%, and 14.23% with ≤3 days peer week, and the proportion of boys who ate breakfast every day (65.07%) was higher than girls (61.00%) ( χ 2 = 10.01, P <0.05). The proportion of low quality breakfast was 71.87%, and girls (73.68%) were higher than boys (69.94%) (χ 2 = 9.29, P <0.05). Logistic regression analysis showed that grade of school, boarding school, and sleep quality are all influencing factors for whether to eat breakfast every day; grade of school, whether to stay at school were factors that affect breakfast quality ( P <0.05). Conclusion The frequency and quality of breakfast need more improvement among middle and primary school students in a poor rural area of a city in Guizhou Province. Students, parents, and teachers should be educated on nutrition to promote healthy eating and sleeping habits and improve student health. 【摘要】 目的 了解贵州省农村贫困地区中小学生早餐现状及影响因素, 为开展儿童营养教育及制定干预措施提供科学 依据。 方法 采用分层整群抽样方法, 于 2019 年 4—6 月对贵州省某市 3 所小学和 3 所中学 2 833 名学生进行早餐行为与 影响因素问卷调査。 结果 中小学生早餐食用频率最髙的是谷薯类 (71.66%), 其次为新鲜蔬菜 (45.89%)、奶类 (35.55% )、肉/蛋/鱼类 (29.33% )、豆类 (19.52% )、新鲜水果 (18.74% )。中小学生能每天吃早餐的比例为62.97%, 每周吃 4~ 6次早餐的为 22.80%, ≤3 次的为14.23%, 男生每天都吃早餐的比例 (65.07% )髙于女生 (61.00% ), 差异有统计学意义 (χ 2 = 10.01, P <0.05)。早餐营养差的比例达 71.87%, 女生 (73.68%)髙于男生 (69.94%) (χ 2 = 9.29, P <0.05)。Logistic 回归 分析结果显示, 学段、是否住校、睡眠质量均是每天吃早餐的影响因素；学段、是否住校是早餐质量的影响因素 (P值均< 0.05)。 结论 贵州省某市农村贫困地区中小学生每天吃早餐的比例较低, 早餐营养质量差。应对学生、家长、老师开展营 养知识教育, 促使学生养成健康的饮食和睡眠生活习惯, 改善学生健康状况。

Background and Aim: In recent years, table tennis has developed rapidly throughout the country and abroad. At present, primary school students are in an important stage of physical and mental development while paying more attention to the development of physical and mental health. However, there are fewer studies on mindfulness training for primary school students. This study aimed to develop a mindfulness training model to improve table tennis skills for primary school students in Guangzhou city. Materials and Methods: This study is a research and development type. The researcher divided the boundaries of the sample group into 3 groups as follows 1. Teachers of table tennis in primary schools in Guangzhou City, a total of 196 teachers. 2. 19 experts, consisting of 10 table tennis coaches, 4 primary school table tennis teachers, and experts. In the area of meditation, there were 5 people selected from a specific selection. 3. 7 experts in the development of meditation training models towards the development of table tennis skills at the primary school level. Using mixed methods research there are qualitative research methods and quantitatively divided into 3 phases: Phase 1: Assessment of the table tennis learning conditions of elementary school students in Guangzhou; Phase 2: Develop a meditation training model and table tennis skill development. at the primary level With the Delphi technique; Phase 3: meeting with experts to confirm and certify. Results: 1. The results of the evaluation of meditation, mindfulness, and table tennis skills training found that (1) It increases concentration in studying. (2) Table tennis skill training promotes concentration. (3) Helps promote and Practice movement skills. (4) Instructors must have high-level table tennis teaching skills respectively. 2. It was found that in the area of meditation and mindfulness training practicing Qigong consists of activities to practice Qigong to strengthen mindfulness and concentration in 4 poses of meditation practice and breathing practice that include: Breath adjustment poses, Chest stretching pose, Tha Inika Soaring Sky pose and Shankaya breath pose. Most had consistent opinions on all items (interquartile range 0.00 - 0.50). Conclusion: Developing a meditation practice style combined with table tennis skills. It's extremely good because of the practice of Qigong it is the basic culture of China that has a history of over 1000 years. A model for applying mindfulness and concentration in table tennis. It gives Chinese athletes their own identity, especially at the youth level. The use of Qigong, which is a practice of body, mind, concentration, and breath, is admirable to be able to combine concepts and approaches so perfectly. Experts have further presented that the development of this model will help promote Confidence for athletes.

To explore the behaviors related to infectious disease and family factors in primary and middle school students, and to provide evidence for improving behaviors related to infectious disease. A total of 8465 students were randomly surveyed by a standard questionnaire of behaviors related to infectious disease. Chi-square test was used to analyze the influential factors for behaviors related to infectious disease, and non conditional logistic regression analysis was used to analyze the multiple factors. The total formation rate of behaviors related to infectious disease was 66.4%. The rates for primary and middle school students were 69.4% and 62.8% respectively, with significant difference (P<0.05). There were significant differences in the following behaviors, such as washing hands before eating food, rarely buying snacks on outside stalls, informing teachers when showing infectious disease symptoms (all P<0.05), the degree for such behaviors in primary school students was higher than that in middle school students. There were also significant differences in the following behaviors, such as washing hands after using the toilet, blocking with a handkerchief, wiping while coughing and sneezing (all P<0.05), the degree for such behaviors in middle school students was higher than that in primary school students. Non conditional logistic regression analysis showed that the behaviors related to infectious disease in primary and middle school students were associated with parents' education degree, mother's occupation and living status with parents. Behaviors related to infectious disease in primary and middle school students need to be improved, and the formation of these behaviors may be related to many family factors.

Application and Practice of MOOCs in the Teaching of Primary and Middle Schools

ObjectivesIn this cross-sectional survey, we sought to determine the prevalence of and the influence of prenatal and neonatal factors on childhood visual impairment without correction (VIUC) in a paediatric population...

Objective: To examine whether sleep status and social jet lag are related to the mental health behaviors in children and adolescents, providing a reference for preventing and improving children and adolescents' mental health behaviors. Methods: A large cross-section was conducted in Baoan District, Shenzhen, from April to May 2019. A total of 30 188 adolescents and children in grades 1-12 in 14 schools were included. The growth trajectory and health index questionnaire of primary and secondary school students were designed to evaluate the sleep status. Mental health behavior problems among students were accessed using the parents' and students' versions of the Strengths and Difficulties Questionnaire. After controlling for confounding factors of demographic variables, including gender, age, parental education level, academic performance, learning burden, and noise impact, a multivariate logistic regression model was used for statistical analyses. Results: The sleep duration of four grades students were 90.4％,90.1％, 98.2％, and 98.4％, respectively. 19.9％ did not have a post-lunch nap. 19.6％ had a wake-up delay of more than or equal to 2 h weekend morning. 35.1％ had an inconsistent bedtime and 15.5％ had an inconsistent awakening time. The multivariate logistic regression model showed that compared with 8-9 h, the sleep duration of elementary school juniors at night less than or equal to 7 h, 7-8 h increased the risk of psychological behavior problems. The sleep time more than 9 h was negatively correlated with psychological behavior problems. The sleep duration of elementary school seniors less than or equal to 7 h increased the risk of psychological behavior problems. The sleep duration of middle school and high school students less than or equal to 6 h increased psychological behavior problems. The ORs (95％CI) appeared as 2.53(1.85-3.47), 2.41(1.11-5.25), respectively. The ones with a sleep time more than 9 h also increased the risk, and ORs (95％CI) appeared as 2.37(1.40-4.01), 5.38 (1.79-16.1), respectively. Both the absence of post-lunch nap and the nap time less than 0.5 h were risk factors for psychological behavior problems in primary and middle school students. The nap time over 1-2 h was also a risk factor for high school students' psychological behavior problems. Waking up at irregular times in the morning, going to bed at varying times in the evening, and delaying getting up for more than or equal to 2 h on weekends were all risk factors for psychological and behavioral problems among primary and middle school students. The ORs (95％CI) of psychological behavior problems of elementary school juniors and seniors, middle school and high school students were 2.07 (1.45-2.97), 1.57 (1.09-2.26), 2.66 (2.06-3.44), 2.48 (1.96-3.15), respectively. Conclusions: Sleep duration, no post-lunch sleep, and daily intraindividual variability of sleep is positively associated with poor mental health. Additionally, social jet lag is associated with mental health problems in students. It is noted that delaying sleep within half an hour on the weekends of elementary school juniors is significantly associated with an increase in bad mental behavior.

Objective: To examine the purchase behaviors of prepackaged food and its determinants among primary and middle school students in 6 provinces of China. Methods: A multi-stage sampling strategy was adopted to select 2 499 primary and middle school students and their parents from the eastern region of China(Beijing, Jiangsu Province, Guangdong Province), the northeast region(Heilongjiang Province), the central region(Henan Province) and the western region(Sichuan Province) from July 2020 to March 2021. Socio-demographic characteristics of students and their parents, eating-related behaviors and the purchase behaviors of prepackaged food of students, and parents' attitudes towards students' eating behavior were collected through questionnaire towards students and their parents. The χ² test was conducted to compare the purchase behaviors in different groups of students, and multivariate logistic stepwise regression analysis was used to analyze the determinants among primary and middle school students. Results: The age of 2 499 participants was(12.7±2.5) years. There were 1 272(50.9%) females and 1 279(51.2%) middle school students. About 1 404(56.2%) students bought prepackaged food. The top 6 prepackaged foods bought at least once a week were milk and dairy products(74.6%), baked food(58.7%), beverages(42.8%), puffed food(40.8%), chocolate and candy(39.8%), and nuts and dried fruits(37.5%). The multivariate logistic regression model analysis results showed that compared with primary school students, rural students, non-boarding students, students who did not like snacks and students whose parents paid attention to their children eating snacks, middle school students(OR=3.36, 95%CI:2.73-4.12), urban students(OR=1.33, 95%CI:1.11-1.61), boarding students(OR=2.15, 95%CI:1.66-2.79), students who liked snacks(OR=2.01, 95%CI:1.66-2.43), students whose parents did not pay attention to their children eating snacks(OR=1.27, 95%CI:1.05-1.54) were more likely to buy prepackaged food by themselves. Compared with students whose parents had education level of junior high school and below, students whose parents had education level of undergraduate and above(OR=0.70, 95%CI:0.53-0.92) were less likely to buy prepackaged food by themselves. Compared with students whose family monthly income was less than 5 000 yuan, students whose family monthly income was over 10 000 yuan(OR=0.67, 95%CI:0.52-0.87) were less likely to buy prepackaged food by themselves. Conclusion: Many primary and middle school students buy prepackaged food by themselves in 6 provinces of China. Individual characteristics such as grade, place of residence, boarding status, as well as family environment such as parents' education level, monthly income and concern about children eating snacks are the influencing factors of purchasing prepackaged food.

Purpose: Since the outbreak of the Novel coronavirus pneumonia (COVID-19) in December 2019, the General Office of the National Health Commission has put forward the epidemic prevention requirements, such as minimizing unnecessary travel. In December 2022, The State Council issued the latest epidemic prevention policy, marking the country's three-year epidemic control policy. In this case, this paper conducted a comparative study on the number of participants, cognition, attitude, motivation, frequency, time and organization of extracurricular sports activities in primary and secondary schools of Yan 'an City before and after the COVID-19 outbreak, and analyzed and studied the data obtained. Methods: By consulting relevant information; Conduct targeted interviews with leaders involved in the organization and management of extracurricular sports activities and teachers of related majors; Questionnaires were formulated and distributed, and data of the questionnaires were statistically processed to conduct a comparative study on the status quo before and after the epidemic. 400 students from Yuying Middle School, Yan 'an Middle School, Yan 'an No. 3 Middle School, Yan 'an Vocational and Technical College Affiliated Primary School, Yan 'an New District No. 2 Middle School and Beiguan Primary School were selected as the research objects. According to the research needs, a total of 400 questionnaires were sent out and 392 were recovered with a recovery rate of 98%, among which 386 were valid with a recovery rate of 96.5%. The collected questionnaires can meet the needs of this survey. The questionnaire mainly includes the following questions: the form of PE teaching for PE teachers. Students' attitude, liking, motivation and favorite sports to participate in extracurricular sports activities. How often and how long students participate in extracurricular sports activities each week, and how the school conducts extracurricular sports activities. Results: According to the survey, 62.4% of primary and secondary school students think it is important to take part in extracurricular sports activities; The number of people who like extracurricular sports activities reached 145, accounting for 37.4% of the total, among which 115 were boys. The motivation of primary and middle school students to participate in extracurricular sports activities ranked first: promoting physical and mental health, accounting for 45%; 22.2%, 20.4%, 19.4% and 17.8% of the participants chose Taekwondo, roller skating, football and basketball, while 8.2% and 8.8% of the participants chose Wushu and volleyball. The frequency of participating in extracurricular sports activities is seven to ten times a week, accounting for 32.2% of the total; The number of male students who spend 60-90 minutes on each activity is the largest, accounting for 32.3%, while the number of female students who spend less than 30 minutes on each activity is the largest, accounting for 39.7%. Among primary and middle school students, the main ways to participate in extracurricular sports activities are morning exercise, recess exercise and club activities, accounting for 79%, 79.8% and 49.7% respectively. The quality of school organization directly affects students' interest. During the epidemic, 46.32% of physical education teachers chose to provide students with online physical education courses, 20.18% chose video classes, and only 9.34% chose live classes. Conclusion: With the end of the epidemic, although extracurricular sports activities did not return to the pre-epidemic level, students' attitude, cognition, motivation, and other subjective factors have significantly improved, and they pay more attention to physical health.

Objective: To analyze the daily drinking behavior and related factors of primary and middle school students in the Nutrition Improvement Program for Rural Compulsory Education Students (NIPRCES) pilot regions. Methods: Multi-stage stratified random cluster sampling method was used to select one to three national pilot counties in 22 provinces in central and western China where the NIPRCES was implemented in 2019. According to different feeding patterns, two primary schools and two middle schools were selected as key monitoring schools. One or two classes were selected from grade 3 to grade 9. The student questionnaire was used to collect the basic information and daily drinking behavior. Taking whether the drinking water ≥5 cups every day as the dependent variable, multivariate logistic regression model was used to analyze the related factors of drinking behavior among students. Results: A total of 27 374 students were included. On average, primary and middle school students in the regions where NIPRCES was implemented had 3.9 cups of water every day. Logistic regression model showed that boys (OR=1.230, P<0.001), primary school students (OR=1.379, P<0.001), father worked outside the home (OR=1.169, P<0.001), both parents worked outside the home (OR=1.228, P<0.001), non-resident students (OR=1.142, P<0.001), the school in the village (OR=1.638, P<0.001) or township (OR=1.358, P<0.001), school feeding (OR=1.252, P<0.001), the school building with flush toilets (OR=1.384, P<0.001) and the central regions (OR=1.300, P<0.001) students were more likely to drink ≥5 cups water every day. Conclusion: The water consumption of primary and middle school students in the pilot regions of NIPRCES is low, and their drinking behaviors are affected by many factors.

Tobacco use is the leading cause of preventable disease and death in the United States; if current smoking rates continue, 5.6 million Americans aged <18 years who are alive today are projected to die prematurely from smoking-related disease. Tobacco use and addiction mostly begin during youth and young adulthood. CDC and the Food and Drug Administration (FDA) analyzed data from the 2011-2015 National Youth Tobacco Surveys (NYTS) to determine the prevalence and trends of current (past 30-day) use of seven tobacco product types (cigarettes, cigars, smokeless tobacco, electronic cigarettes [e-cigarettes], hookahs [water pipes used to smoke tobacco], pipe tobacco, and bidis [small imported cigarettes wrapped in a tendu leaf]) among U.S. middle (grades 6-8) and high (grades 9-12) school students. In 2015, e-cigarettes were the most commonly used tobacco product among middle (5.3%) and high (16.0%) school students. During 2011-2015, significant increases in current use of e-cigarettes and hookahs occurred among middle and high school students, whereas current use of conventional tobacco products, such as cigarettes and cigars decreased, resulting in no change in overall tobacco product use. During 2014-2015, current use of e-cigarettes increased among middle school students, whereas current use of hookahs decreased among high school students; in contrast, no change was observed in use of hookahs among middle school students, use of e-cigarettes among high school students, or use of cigarettes, cigars, smokeless tobacco, pipe tobacco, or bidis among middle and high school students. In 2015, an estimated 4.7 million middle and high school students were current tobacco product users, and, therefore, continue to be exposed to harmful tobacco product constituents, including nicotine. Nicotine exposure during adolescence, a critical period for brain development, can cause addiction, might harm brain development, and could lead to sustained tobacco product use among youths. Comprehensive and sustained strategies are warranted to prevent and reduce the use of all tobacco products among U.S. youths.