Association Between Exercise Behavior Stages and Obesity Transition in Children and Adolescents: A Nationwide Follow-Up Study.

To examine the association between stages of exercise behavior change, as defined by the transtheoretical model (TTM), and obesity progression among Chinese children and adolescents, with attention to gender and urban-rural differences. A total of 5006 Chinese children and adolescents aged 9-18 years were assessed in 2019 and followed up in 2020. Participants were categorized into five TTM stages: precontemplation, contemplation, preparation, action, and maintenance.

Spatiotemporal Patterns of Indoor Air Pollution and Its Association with Depressive Symptoms Among Schoolchildren in China.

Despite spending a substantial proportion of their time indoors, the mental health effects of indoor air pollution on children and adolescents remain inadequately explored. This study aimed to elucidate the spatiotemporal variations and sociodemographic inequalities in exposure to multiple indoor pollutants and to assess their potential associations with depressive symptoms among school-aged children in Beijing. Using real-time portable monitors, concentrations of fine particulate matter (PM), coarse particulate matter (PM), carbon dioxide (CO), formaldehyde (HCHO), total volatile organic compounds (TVOC), temperature, and humidity in classrooms and bedrooms were measured during both weekdays and weekends.

Burden and risk factors of premature drowning mortality in 204 countries and territories, 1980-2021.

Drowning ranks as the third leading cause of unintentional injury deaths globally. We conducted a systematic analysis of drowning mortality and its associated risk factors. Data on mortality, years of life lost (YLLs), and risk factors related to drowning (ICD-10 codes W65-74) from 204 countries and territories between 1980 and 2021 were obtained from the Global Burden of Disease 2021.

Trends and predictions to 2030 in demographic structures and metabolic health for children and adolescents in China: analysis of national school health surveys from 2000 to 2019.

Background: Understanding the changing metabolic health burden among children and adolescents is crucial for current and future public health resource allocation in China, particularly given rapid population ageing. We aimed to estimate trends in the metabolic burden in children and adolescents aged 7-18 years from 2000 to 2030, using overweight, obesity, and hypertension as proxy indicators.

Methods: We extracted age, sex, height, weight, and blood pressure data for Han children and adolescents aged 7-18 years, as recorded in five cycles of the Chinese National Surveys on Students Constitution and Health in the years 2000, 2005, 2010, 2014, and 2019.

Dual associations of post-sleep and pre-wake light-at-night (LAN) exposure with myopia in children and adolescents.

Objective: To analyze the association between indoor light at night (LAN) exposure with myopia in children and adolescents.

Methods: A cross-sectional survey was conducted in 2023 involving 872 students aged 6-14 years in Beijing, China. Portable photometers continuously measured indoor LAN exposure over four nights.

Spatial-temporal analysis and spatial drivers of childhood obesity in China from 1985 to 2019.

Objective: We characterized the spatial-temporal trends of obesity among Chinese children and adolescents from 1985 to 2019 and examined the impact of social determinants of health (SDOH) patterns.

Methods: Using data from the Chinese National Survey on Students' Constitution and Health (CNSSCH) conducted between 1985 and 2019, featuring seven cross-sectional surveys, we employed spatial-temporal analysis methods and collected 23 obesity-related variables to identify SDOH patterns. A general linear regression model investigated associations between SDOH patterns and obesity prevalence.

Secular trends in physical fitness and cardiovascular risks among Chinese college students: an analysis of five successive national surveys between 2000 and 2019.

Background: With increasing concerns about early-onset cardiovascular diseases, it is essential to understand the distribution of cardiovascular health among young adults. This study aimed to characterize trends in physical fitness and the prevalence of overweight/obesity (OWOB), elevated blood pressure (EBP), and their comorbidity among Chinese college students from 2000 to 2019 and to analyze the changes in their associations and subgroup differences.

Methods: Data were extracted from five cycles of the Chinese National Survey on Students' Constitution and Health (2000-2019), including 241,710 college students aged 19-22.

The impact of cognitive behavioral therapy on disease uncertainty, stressful life events, quality of life, anxiety, and depression in glioma patients undergoing chemotherapy: a quasi-experimental study.

Objective: To investigate the effect of cognitive behavioral therapy on disease uncertainty and stressful life events in glioma patients undergoing chemotherapy.

Methods: This quasi-experimental study enrolled 90 glioma patients from Sanmenxia Central Hospital between January and December 2021. Patients were divided into an intervention group (n = 45) or a control group (n = 45).

Could physical activity promote indicators of physical and psychological health among children and adolescents? An umbrella review of meta-analyses of randomized controlled trials.

Background: We performed an umbrella review to synthesize evidence on the effects of physical activity (PA) interventions on indicators of physical and psychological health among children and adolescents, including body mass index (BMI), blood pressure (BP), depressive symptoms, and cognitive function.

Methods: PubMed, Embase, Web of Science, and the Cochrane Library were systematically searched from inception through 31 July 2023. We included meta-analyses of randomized controlled trials exploring the effects of PA interventions on BMI, BP, depressive symptoms, or cognitive function in healthy or general children and adolescents.

The impact of long-term exposure to NO, O, and their oxidative potential on adolescents' mental health, and the protective role of school-based greenness.

Recent increases in nitrogen dioxide (NO) and ozone (O), two highly reactive and oxidative pollutants, have raised concerns about their potential impact on adolescent mental health. This study leveraged data from the Chinese National Survey on Students' Constitution and Health (CNSSCH) in 2019, a nationally representative cross-sectional survey of Chinese adolescents. A total of 149,697 adolescents aged 10-18 years were included in this study.

Trends and inequalities in thinness and obesity among Chinese children and adolescents: evidence from seven national school surveys between 1985 and 2019.

Background: There are little recent data in China regarding contemporary nutritional inequities among children and adolescents, particularly in relation to urban-rural residence and regional socioeconomic status (SES). We aim to assess inequalities in thinness and obesity in Chinese children and adolescents.

Methods: Weight and height measurements for 1 677 261 children and adolescents aged 7-18 years were obtained from seven cycles of the Chinese National Surveys on Students Constitution and Health (1985, 1995, 2000, 2005, 2010, 2014, and 2019).

Mapping Adolescent Mental Well-Being - 30 PLADs, China, 2019.

What Is Already Known About This Topic?: High levels of mental well-being are linked to favorable life outcomes. Nonetheless, compared to the research on psychiatric disorders, the understanding of mental well-being among Chinese adolescents is still relatively underexplored.

What Is Added By This Report?: This report fills a significant void in the literature concerning the mental well-being of Chinese adolescents by providing updated data.

[Status and pathways of factors influencing physical activity time among elementary and junior high school students in Beijing].

Objective: To describe the current distribution of daily physical activity time among elementary and junior high school students in Beijing, and to analyze the influencing factors and pathways at the individual, family, school and community levels.

Methods: Data were drawn upon from a cross-sectional investigation in Beijing in 2023, and a total of 3 157 elementary and junior high school students were included in the final analysis. Questionnaire was used to collect data on basic characteristics, overall and in-school physical activity time per day, the number of sports mastered, perceived physical activity benefits and barriers scales, perceived family, school, and community physical activity supportive environment scales.

Association between BMI and age at menarche or spermarche among both sexes: Findings from six successive national surveys in China.

Background: To explore trends of the association between body mass index (BMI) and age at menarche or spermarche and its urban-rural disparities from 1995 to 2019.

Methods: A total of 912 753 children and adolescents - including 519 940 9-18 years old girls and 392 813 11-18 years old boys - were involved in six successive cross-sectional surveys conducted across 30 provinces in China from 1995 to 2019. Data on menarche and spermarche was collected using the status quo method, where same-gender physicians conducted face-to-face interviews to determine if children and adolescents had experienced their first menstrual cycle or ejaculation (yes/no).

Secular trend and projection of overweight and obesity among Chinese children and adolescents aged 7-18 years from 1985 to 2019: Rural areas are becoming the focus of investment.

Background: The urban-rural disparities in overweight and obesity among children and adolescents are narrowing, and there is a need for long-term and updated data to explain this inequality, understand the underlying mechanisms, and identify priority groups for interventions.

Methods: We analyzed data from seven rounds of the Chinese National Survey on Students Constitution and Health (CNSSCH) conducted from 1985 to 2019, focusing on school-age children and adolescents aged 7-18 years. Joinpoint regression was used to identify inflection points (indicating a change in the trend) in the prevalence of overweight and obesity during the study period, stratified by urban/rural areas and sex.

Combined Effect of Outdoor Time and Other Modifiable Factors on Myopia Incidence Among Children and Adolescents - 9 PLADs, China, 2020.

What Is Already Known About This Topic?: Myopia has been identified as a significant emerging challenge and policy priority among children and adolescents in China by the Ministry of Education and seven other departments. Limited research has been conducted to investigate the collective impact of outdoor time and other modifiable factors on the incidence of myopia.

What Is Added By This Report?: This study provides support for the protective effect of combining increased outdoor time with other prevention strategies in reducing the incidence of myopia.

Associations of school physical activity environment with comorbid obesity and myopia in children and adolescents: Findings from a Chinese national follow-up study.

Background: Overweight and obesity (OWOB) and myopia have become two of the most important issues affecting the health of children and adolescents worldwide. Despite the recognition that the school physical activity (PA) environment is a critical factor for preventing and controlling overweight, obesity (OWOB), and myopia in children and adolescents, research on OWOB and myopia as a comorbidity remains unexplored, with evidence for effective strategies still being inconclusive. Hence, this study aimed to assess the prevalence and progression of comorbid OWOB/myopia and each condition alone, and to explore the association with school PA environment.

Clustering of Multilevel Factors Among Children and Adolescents: Associations With Health-Related Physical Fitness.

Background: To identify the clustering characteristics of individual-, family-, and school-level factors, and examine their associations with health-related physical fitness.

Methods: A total of 145,893 Chinese children and adolescents aged 9-18 years participated in this cross-sectional study. The 2-step cluster analysis was conducted to identify clusters among individual-, family-, and school-level factors.

[Application in SPSS of different methods for evaluating undernutrition in children and adolescents].

Objective: To introduce the four widely used methods for evaluating undernutrition in children and adolescents in China and internationally, and to compile the corresponding SPSS program package according to the American CDC standard, the IOTF standard and the Chinese industry standard.

Methods: The SPSS program package for evaluating undernutrition in children and adolescents was compiled and explained. Based on the growth and development survey data of 62 517 children and adolescents aged 6-17 years in 93 primary and secondary schools in 7 provinces and cities in China in 2012, the nutritional deficiency status was judged and compared according to four evaluation methods, and the chi-square test was used to compare the differences between groups, the Bonferroni method was used for pairwise comparisons.

A cluster randomized trial of a comprehensive intervention nesting family and clinic into school centered implementation to reduce myopia and obesity among children and adolescents in Beijing, China: study protocol.

Background: Myopia and obesity in children and adolescents have become serious public health problems that endanger public health, especially in China. Unhealthy lifestyle behaviors are environmental drivers of both myopia and obesity. This protocol describes a study to evaluate the effectiveness of "22510SS", that is 2 h of daytime outdoor activities ('2'); Limit screen time to no more than 2 h per day ('2'); Consume at least 5 servings of fruits and vegetables daily ('5'); Attain 1 h of physical activity daily ('1'); Consume 0 sugar-sweetened beverages ('0'); Reasonable sleep duration ('S'); Regular supervision ('S').

Associations between combinations of 24-h movement behaviors and physical fitness among Chinese adolescents: Sex and age disparities.

Objective: To analyze the relationship between 24-h movement behaviors and adolescents' physical fitness, with sex difference and age disparity explored specifically.

Methods: A total of 135 852 Chinese adolescents aged 13-22 years were included in this cross-sectional study. Self-reported 24-h movement behavioral times, including moderate to vigorous physical activity (MVPA), recreational screen, and sleep, were identified as meeting guidelines based on Canadian recommendations.

Secular trends and urban-rural disparities in the median age at menarche among Chinese han girls from 1985 to 2019.

Background: Menarche is a substantial milestone of female puberty. Timing of age at menarche is considered the key to understanding the potential linkages with women's health outcomes later in life. This study aimed to explore the secular trends and urban‒rural disparities in the median age at menarche among Chinese Han girls from 1985 to 2019.