Adolescent Technology, Sleep, and Physical Activity Time in Two US Cohorts

Trajectories of Problem Behaviors and Information Technology Use Among Adolescents: A Latent Growth Model Using the Korean Children and Youth Panel Survey

We investigated the association between computer and mobile phone online activities and adolescents' problem behaviors (e.g., depressive symptoms, withdrawal, somatic complaints, attention deficit, and aggression) using data from the Korean Children and Youth Panel Survey and latent growth model analysis. The results demonstrated that text-related activities lowered withdrawal and attention deficit. Higher use of online communities or personal websites was associated with higher depressive symptoms, withdrawal, somatic symptoms, and aggression. Online gaming increased both attention deficit' initial value and its decrease rate. Taking photos decreased withdrawal. Watching videos increased depressive symptoms, withdrawal, and attention deficit. Listening to music lowered attention deficit' initial value and somatic symptoms' decrease rate. Accessing adult websites increased attention deficit and aggression. Educational information searches reduced attention deficit and aggression. Online transactions increased somatic symptoms. This study indicates that adolescents' problem behaviors may appear differently depending on the type of information technology use.

Longitudinal associations of screen time, physical activity, and sleep duration with body mass index in U.S. youth

BACKGROUND

Youth use different forms of screen time (e.g., streaming, gaming) that may be related to body mass index (BMI). Screen time is non-independent from other behaviors, including physical activity and sleep duration. Statistical approaches such as isotemporal substitution or compositional data analysis (CoDA) can model associations between these non-independent behaviors and health outcomes. Few studies have examined different types of screen time, physical activity, and sleep duration simultaneously in relation to BMI.

METHODS

Data were baseline (2017-2018) and one-year follow-up (2018-2019) from the Adolescent Brain Cognitive Development Study, a multi-site study of a nationally representative sample of U.S. youth (N = 10,544, mean [SE] baseline age = 9.9 [0.03] years, 48.9% female, 45.4% non-White). Participants reported daily minutes of screen time (streaming, gaming, socializing), physical activity, and sleep. Sex-stratified models estimated the association between baseline behaviors and follow-up BMI z-score, controlling for demographic characteristics, internalizing symptoms, and BMI z-score at baseline.

RESULTS

In females, isotemporal substitution models estimated that replacing 30 min of socializing (β [95% CI] = -0.03 [-0.05, -0.002]), streaming (-0.03 [-0.05, -0.01]), or gaming (-0.03 [-0.06, -0.01]) with 30 min of physical activity was associated with a lower follow-up BMI z-score. In males, replacing 30 min of socializing (-0.03 [-0.05, -0.01]), streaming (-0.02 [-0.03, -0.01]), or gaming (-0.02 [-0.03, -0.01]) with 30 min of sleep was associated with a lower follow-up BMI z-score. In males, replacing 30 min of socializing with 30 min of gaming was associated with a lower follow-up BMI z-score (-0.01 [-0.03, -0.0001]). CoDA estimated that in males, a greater proportion of time spent in baseline socializing, relative to the remaining behaviors, was associated with a higher follow-up BMI z-score (0.05 [0.02, 0.08]). In females, no associations between screen time and BMI were observed using CoDA.

CONCLUSIONS

One-year longitudinal associations between screen time and BMI may depend on form of screen time, what behavior it replaces (physical activity or sleep), and participant sex. The alternative statistical approaches yielded somewhat different results. Experimental manipulation of screen time and investigation of biopsychosocial mechanisms underlying the observed sex differences will allow for causal inference and can inform interventions.

Children's Sleep and Mental Health During the COVID-19 Pandemic

PURPOSE OF REVIEW

The COVID-19 pandemic and protracted home confinement required adjustments to schedules and routines generating concern about children's sleep. This review describes general considerations regarding children's sleep, changes and disturbances in their sleep during the pandemic, and the association of sleep measures with health and psychological outcomes in general and in the context of the pandemic.

RECENT FINDINGS

A number of studies found an increase in the duration of children's sleep with later bedtimes and waketimes for some children. The research also documented sleep disturbances and associations between children's sleep and psychological outcomes. The extent to which increased sleep duration and changed sleep behaviors translated into improved sleep quality and/or a change in sleep disturbances remains unclear. This review suggests the importance of considering children's sleep in other mass trauma situations including, for example, natural and man-made disasters, as well as pandemics.

Family Socioeconomic Status and Children's Screen Time

OBJECTIVE

This mixed-methods study examined whether higher-SES children's digital technology use adhered to contemporaneous pediatric guidelines, how it compared to lower-SES children, and why, as analyses showed, higher-SES children's technology use far exceeded pediatric recommendations.

BACKGROUND

2013 American Academy of Pediatrics (AAP) guidelines recommended limited "screen time" for children. Higher socioeconomic status (SES) families tend to follow guidelines, but digital technology use-simultaneously a health behavior and a pathway for building human capital-has complex implications.

METHOD

Quantitative analyses provide new nationally representative estimates of the relationship between social class and 9- to 13-year-old children's technology time (including television), device access, and parenting rules (2014 PSID Child Development Supplement, N=427). Qualitative analyses of 77 longitudinal higher-SES parent interviews articulated explanatory processes.

RESULTS

Higher-SES children used technology as frequently as others and in excess of recommendations. Their device access, activities, and agency in adhering to rules, however, differed from others. Qualitative analysis uncovered processes that helped explain these findings: parents' ambivalence about technology and perception that expert guidance is absent or unrealistic, and children's exercise of agency to use technology facilitated by "concerted cultivation" parenting styles, led to higher-SES individualistic parenting practices that supported children's increased non-television technology use.

CONCLUSION

Cultures and structures related to children's technology use are in flux, and classed norms and understandings are emerging to construct relevant class-based distinctions around parenting.

Influence of the Home Environment on Physical Activity Behaviors in African American Youth

Background: This study examined the relationships between components of the home environment and physical activity (PA) behaviors among African American adolescents. Methods: A community-based sample of 99 African American parent-child dyads (62% girls; 42% overweight/obese, 15.0 ± 0.2 years) were included in this analysis. The home environment (PA equipment, family support for PA, and internet access) was evaluated using the Health and Environment Survey. Child PA was measured objectively using accelerometry. Data collection occurred between 2014 and 2016. Results: Internet access was associated with 29 fewer minutes of light physical activity [p = 0.011, β = -29.25 ± 11.28 (95% confidence interval: -51.65 to -6.86)], 9 fewer minutes of moderate-to-vigorous physical activity [p = 0.045, β = -9.10 ± 4.48 (-17.98 to -0.21)], and 38 fewer minutes of total PA (TPA) [p = 0.006, β = -38.35 ± 13.38 (-65.62 to -11.08)]. Family support was associated with 2 minutes of TPA [p = 0.044, β = 2.25 ± 1.10 (-1.97 to 3.19)]. PA equipment was not significantly associated with greater PA (all p's > 0.05). Conclusions: These findings suggest that home internet access may hinder participation in PA among African American adolescents. Future research should continue to identify barriers in the home environment that contribute to physical inactivity among African American adolescents.

Effects of Media Multitasking and Video Gaming on Cognitive Functions and Their Neural Bases in Adolescents and Young Adults

Abstract. The increasing use of digital technology among adolescents and young adults has led to concerns about possible detrimental effects on cognitive and brain functions. Indeed, as reviewed here, according to behavioral and brain-imaging studies, excessive media multitasking (i.e., using different digital media in parallel) may lead to enhanced distractibility and problems in maintaining attention. However, frequent video gaming may be beneficial for the development of working memory, task switching, and attention skills. All these cognitive skills depend on executive cognitive functions. Still scant but gradually cumulating brain-imaging results suggest that the negative effects of frequent media multitasking and the positive effects of frequent video gaming on cognitive skills in adolescents and young adults are mediated by effects on the frontal lobes, implicated in executive cognitive functions and still developing even through early adulthood.

Personal, social, and environmental correlates of physical activity and sport participation in an adolescent Turkish population

Background

Benefits of physical activity has been shown for adolescents; however, there is a decline trend in number of adolescents meeting current WHO recommendations. This trend underlines the importance of identifying factors associated with adolescents’ physical activity level (PAL) with considerations of regional and cultural differences to plan and implement effective policies. Therefore, the aim of this study was to determine personal, ecological, and social factors associated with PAL and sport participation in Turkish adolescents aged 11–14 years. A cross-sectional study was conducted by including 996 adolescents aged between 11 and 14 years from 39 secondary schools in İstanbul, Turkey. Logistic regression analyses performed to identify the significant personal (age, gender, sleep time, screen time, BMIz score, having siblings), ecological (presence of playground, type of school transportation), and social (family income, engaging a physical activity with family, and preferred activity at school breaks) predictors of PAL and sport participation.

Results

Adolescents who were active during break time at school (p < 0.001), engaging a physical activity with family (p < 0.001), and did not have a sibling (p = 0.029) were more likely to be physically active. Adolescents behaved active during break time at school (p < 0.001), had a playground at home (p < 0.001), spending time with family for physical activity (p < 0.001), and did not have a sibling (p = 0.021) were more likely to participate in a sport activity.

Conclusions

Predictors of PAL in this study indicates the need to promote active break time in school, increased physical activity time with family, and to design environmental policies to increase number of playgrounds.

Physical Activity and Sedentary Behavior in Children During the COVID-19 Pandemic: Implications for Mental Health

PURPOSE OF REVIEW

This paper examines children's physical activity and sedentary behavior and associated psychological outcomes coincident with the COVID-19 pandemic.

RECENT FINDINGS

Generally, the research has found decreased physical activity and increased sedentary behavior, both of which are associated with various psychological outcomes. The research on sedentary behavior has focused on screen time with minimal consideration of other sedentary behaviors or of specific physical activities or the context in which these behaviors occurred. Changes in children's daily routines and activities have received little attention in the mass trauma research despite the fact that disasters disrupt individual, family, and community life. Thus, the current report contributes to an understanding of the breadth of mass trauma effects, underscores the importance of physical activity and sedentary behavior and their associations with health and psychological outcomes, and is a reminder to consider children's daily lives both during times of crisis and under usual circumstances.

Adolescent Obesity Modeling: A Framework of Socio-Economic Analysis on Public Health

Bayesian Structural Equation Modeling (SEM-Bayesian) was applied across different research areas to model the correlation between manifest and latent variables. The primary purpose of this study is to introduce a new framework of complexity to adolescent obesity modeling based on adolescent lifestyle through the application of SEM-Bayesian. The introduced model was designed based on the relationships among several factors: household socioeconomic status, healthy food intake, unhealthy food intake, lifestyle, body mass index (BMI) and body fat. One of the main contributions of this study is from considering both BMI and body fat as dependent variables. To demonstrate the reliability of the model, especially in terms of its fitting and accuracy, real-time data were extracted and analyzed across 881 adolescents from secondary schools in Tehran, Iran. The output of this study may be helpful for researchers who are interested in adolescent obesity modeling based on the lifestyle and household socioeconomic status of adolescents.

A life course framework for understanding digital technology use in the transition to adulthood

Rapid increases in young people's time spent using digital technology ("screen time") in the mobile internet era have led to anxiety about long-term effects. This mixed-method US study examines childhood experiences and contextual factors that shape screen time in the transition to adulthood. We recursively analyzed 56 qualitative interviews with young adults in a large metropolitan area in 2016-2018 and prospective longitudinal nationally representative survey data (PSID-CDS-2007 and PSID-TAS-2017) to articulate a conceptual framework of life course influences on young adults' time spent using digital technologies. Inductive qualitative analyses built an initial framework, which was assessed with quantitative data, then further refined with qualitative analyses. Young adults drew on life course perspectives when discussing influences on their current digital technology use. As they suggested, in quantitative analyses more frequent adolescent technology use and greater device access weakly predicted increased technology frequency. Current school enrollment and several current peer factors predicted technology time. Interviewees emphasized the influence of parenting around technology use during adolescence, but parenting did not predict young adult screen time in quantitative analyses. Further qualitative analyses suggested that instead of influencing current technology time, earlier parenting shaped current emotional responses and imagined future technology use. We found young adults' technology use frequency to be informed by earlier experiences but highly malleable. Past technology use and current social contexts matter, but only up to a point. Moving beyond time use to incorporate emotional responses and future plans can better capture how the life course shapes technology use.

Metabolic and Endocrine Changes Determined in Saliva of Adolescents Engaged in Computer Gaming

Passion for computer games negatively affects the health level of schoolchildren. Among the approaches to monitoring the functional state of such schoolchildren, the most informative and painless is the study of the saliva. The study involved 45 children, aged 14.00 ± 0.21 years, and divided according to the contact's intensity with computer games. The following indicators of lipid peroxidation (LPO) were determined in the saliva: indicators of the antioxidant (AO) system, concentration of immunoglobulin A, and hormonal indicators. The significant increases in the catecholamine (adrenaline) level for 2.3 times and biogenic amine-serotonin for 35.5% and increase in the LPO-DC product concentration in gamers for 75.8% were revealed. The study of the schoolchildren's homeostasis peculiarities confirmed the adequacy of the use of biochemical techniques to assess the condition of children gamers. They have a prenosological condition. This is reflected in the increase in LPO intensity, failure of the protective AO system, imbalance of hormonal state, and immunity deterioration. Information on the evaluation of the LPO activity processes and the AO system condition and the degree of the balance's shift between prooxidants and antioxidants in biological substrates can be considered objective and very sensitive indicators of the general condition, activity, and improvement of the regulation and maintenance of homeostasis.

Magnitude of Overweight, Obesity and Insufficient Physical Sports Activities Among Secondary School Students in Kinondoni Municipal, Dar es Salaam

INTRODUCTION

There is an overwhelming increase of Non-Communicable Disease worldwide such as diabetes and cardiovascular diseases. Overweight and obesity are highly associated with development of these diseases. Unhealthy lifestyle such as excessive sugar, alcohol intake and lack of adequate physical activities has been associated with development of obesity. However, these risk factors are not well elucidated among adolescents in Tanzania. We conducted this survey to determine obesity, overweight, self-reported physical activities, and preferred foods among secondary school students in Kinondoni Municipal in Dar es salaam, Tanzania.

METHODS

A cross sectional descriptive survey was conducted among secondary school students at Kambangwa and Makumbusho secondary schools in Kinondoni municipal in Dar es Salaam city. A simple random sampling technique was used to select participating schools with systemic random selection procedure was used to select participants. A pre structured, self-administered questionnaire was used to collect demographic information from the participants. Anthropometric measurement for Body Mass Index (BMI) was done using standard tools. Interpretation of the findings was done using World Health Organization (WHO) standard charts for age and sex. Data were analysed using Statistical Package for Social Sciences (SPSS version 20; SPSS Inc., Chicago, US).

RESULTS

A total of 234 participants were enrolled in the study. A total of 204 (87.2%) of study participants reported to regularly participate in physical sports activities. Furthermore, Males reported to participate more in physical sports activities compared to females (χ2 (1) =8.13., p = 0.004). During sex-wise comparison, 30 (46.2%) of males reported to participate in sports once per week compared to 71 (51.5%) of females. Reported frequency was influenced by participants' sex (χ2 (3) =16.4., p= 0.001). A total of 28 (12%) participants reported fruits as their favourite food. Food preference was influenced by the participants' sex (X 2 (5) =13.1., p < 0.02). 32(47.7%) of males reported fresh fruits juice as their favourite drink compared to 106(63.5%) of females) while 6(9%) of males reported to prefer commercial industrial juice compared to 4 (2.4%) of females.

CONCLUSION

Obesity and overweight are prevalent among secondary school adolescents in Kinondoni Municipal, Dar es salaam. In addition, the magnitude of physical activities was below the recommended amount. Therefore, awareness campaigns and advocacy programs aiming at preventive measures against NCDs such as healthy eating behaviour and promotion of physical activities among adolescents should be given high priority.