Associations between problem technology use, life stress, and self-esteem among high school students.

Background: Adolescence is a critical period for development, with many risk factors resulting in long-term health consequences, particularly regarding mental health. The purpose of this study was to examine the associations between problem technology use, life stress, and self-esteem in a representative sample of adolescents residing in Ontario, Canada.

Methods: Self-reported data were obtained from a cross-sectional sample of 4,748 students (57.

Associations between cannabis use, opioid misuse and severe psychological distress in adolescents: A cross-sectional school-based study.

Background: Cannabis use and nonmedical use of prescription opioids are consumed by a small to moderate number of adolescents. However, little is known about their combined influence on mental health in this age group. This study examined the association between cannabis use, nonmedical use of prescription opioids, or both with serious psychological distress among adolescents and tested if sex could moderate these associations.

Heavy social media use and posting regret are associated with lower self-esteem among middle and high school students.

Objective: Social media use has become ubiquitous among schoolchildren. This study examined the association of social media use and posting regret with self-esteem among middle and high school students, and tested whether school type (i.e.

Heavy social media use and psychological distress among adolescents: the moderating role of sex, age, and parental support.

Background: Despite increasing evidence that social media use is associated with adolescents' mental well-being, little is known about the role of various factors in modifying the effect of this association during adolescence. This study examined the association between social media use and psychological distress among adolescents and explored whether sex, age, and parental support moderate this association.

Methods: Data came from a representative sample of middle and high school students in Ontario, Canada.

Longitudinal associations between different types of screen use and depression and anxiety symptoms in adolescents.

Background: Evidence examining the longitudinal associations between different types of screen behaviours and mental health among adolescents is limited. The present study examined the association between five types of screen behaviours and symptoms of anxiety and depression one year later. This study also assessed how changes in screen time were associated with changes in anxiety and depressive symptoms and whether the observed relationships were moderated by sex.

Economic burden of low muscle strength in Canadian adults.

The economic cost associated with low muscle strength in Canadian adults is unknown. The total annual economic burden of low muscle strength in Canadian adults represents 2.2% of the overall burden of illness costs in 2021.

Economic burden of excessive sedentary behaviour in Canada.

Objective: To estimate health care and health-related productivity costs associated with excessive sedentary behaviour (> 8 h/day and > 9 h/day) in Canadian adults.

Methods: Three pieces of information were used to estimate costs: (1) the pooled relative risk estimates of adverse health outcomes consistently shown to be associated with excessive sedentary behaviour, gathered from meta-analyses of prospective cohort studies; (2) the prevalence of excessive sedentary behaviour in Canadian men and women, obtained using waist-worn accelerometry in a nationally representative sample of adults (Canadian Health Measures Survey 2018-2019); and (3) the direct (health care) and indirect (lost productivity due to premature mortality) costs of the adverse health outcomes, selected using the Economic Burden of Illness in Canada 2010 data. The 2010 costs were then adjusted to 2021 costs to account for inflation, population growth, and higher average earnings.

Economic burden of low cardiorespiratory fitness in Canada.

The objective of this study was to estimate health care and health-related productivity costs associated with low cardiorespiratory fitness (CRF) in Canadian adults. We also estimated costs that would be avoided by a 10 percentage point prevalence reduction in low CRF. A prevalence-based approach was used to estimate the economic costs associated with low CRF.

Economic burden of insomnia symptoms in Canada.

Objective: To estimate health care and productivity costs associated with insomnia symptoms in Canadian adults.

Methods: Three pieces of information were needed to calculate estimates based on a prevalence-based approach: (1) the pooled relative risk estimates of health outcomes consistently associated with insomnia symptoms obtained from recent meta-analyses of prospective cohort studies; (2) the direct (health care) and indirect (lost productivity due to premature mortality) costs of these health outcomes using the Economic Burden of Illness in Canada information; and (3) the prevalence of insomnia symptoms in Canadian men (18.1%) and women (29.

The role of insufficient sleep and circadian misalignment in obesity.

Traditional risk factors for obesity and the metabolic syndrome, such as excess energy intake and lack of physical activity, cannot fully explain the high prevalence of these conditions. Insufficient sleep and circadian misalignment predispose individuals to poor metabolic health and promote weight gain and have received increased research attention in the past 10 years. Insufficient sleep is defined as sleeping less than recommended for health benefits, whereas circadian misalignment is defined as wakefulness and food intake occurring when the internal circadian system is promoting sleep.

Bidirectional associations of sleep and discretionary screen time in adults: Longitudinal analysis of the UK biobank.

The direction of the association between discretionary screen time (DST) and sleep in the adult population is largely unknown. We examined the bidirectional associations of DST and sleep patterns in a longitudinal sample of adults in the general population. A total of 31,361 UK Biobank study participants (52% female, 56.

Cyberbullying involvement, parental support, and cannabis use among adolescents.

Background: Cyberbullying victimization has been associated with cannabis use among adolescents. However, it is unclear if this relationship also holds for cyberbullying perpetrators.

Objective: This cross-sectional study examined the association between cyberbullying involvement and cannabis use among adolescents and tested if parental support was associated with cyberbullying involvement and cannabis use.

Canadian 24-h Movement Guidelines, Life Stress, and Self-Esteem Among Adolescents.

Background: Adolescence is often considered a period of heightened stress, and healthy active living behaviors may help those experiencing it to better cope with life stressors and increase their self-esteem. The 24-h movement guidelines for children and adolescents recommend ≥60 min per day of moderate-to-vigorous physical activity, ≤ 2-h per day of recreational screen time, and 9-11-h of sleep per night for school-aged children or 8-10-h per night for adolescents. The objective of this study was to examine the association of meeting the 24-h movement guidelines with life stress and self-esteem among students in Ontario, Canada.

Problem Technology Use, Academic Performance, and School Connectedness among Adolescents.

Background: Little is known about the association between problem technology use in adolescents and school-related outcomes. The purpose of this study was to determine the prevalence of problem technology use and examine its association with academic performance and school connectedness in a sample of students across Ontario, Canada.

Methods: Self-reported data from a sample of 4837 students in grades 9 to 12 (mean age: 15.

Cyberbullying involvement and short sleep duration among adolescents.

Background: Research has shown that cyberbullying victimization is associated with short sleep duration among adolescents; however, the association between cyberbullying perpetration and sleep duration is unclear. Furthermore, little is known about the factors that could moderate these associations. Thus, the objectives of this study were to investigate the associations of cyberbullying victimization, perpetration, or both with short sleep duration among adolescents, and to test whether age, sex, and adherence to the screen time recommendations (≤2 hours/day) moderate these associations.

Sociodemographic and mental health characteristics associated with changes in movement behaviours due to the COVID-19 pandemic in adolescents.

Objectives: Control measures enacted to control the spread of COVID-19 appear to have impacted adolescent movement behaviours. It remains unclear how these changes relate to sociodemographic characteristics and indicators of mental health. Understanding these relationships can contribute to informing health promotion efforts.

The Canadian 24-hour movement guidelines and self-rated physical and mental health among adolescents.

Objective: The Canadian 24-hour movement guidelines for children and youth recommend a minimum of 60 min/day of moderate-to-vigorous physical activity, no more than 2 h/day of recreational screen time, and 8-11 h/night of sleep depending on age. The objective of this study was to examine the associations of meeting combinations of these recommendations with self-rated physical and mental health.

Methods: This study used data from the 2017 (n = 5739) and 2019 (n = 6960) cycles of the Ontario Student Drug Use and Health Survey (OSDUHS), a biennially repeated cross-sectional study of Ontario students in grades 7 through 12.

Longitudinal association between movement behaviours and depressive symptoms among adolescents using compositional data analysis.

Background: Research examining the associations between movement behaviours and mental health indicators within a compositional framework are sparse and limited by their cross-sectional study design. This study has three objectives. First, to describe the change in movement behaviour composition over time.

Psychological and Demographic Determinants of Substance Use and Mental Health During the COVID-19 Pandemic.

Alcohol consumption and distress have increased among Canadians since the start of the COVID-19 pandemic. We examined whether sociodemographic and COVID-19-related worries are associated with various combinations of alcohol consumption and comorbid psychological distress variables among a Canadian sample of adults. Data were derived from a sample of Canadian adults ( = 1,005, 49.

24-h Movement Guidelines and Substance Use among Adolescents: A School-Based Cross-Sectional Study.

Children and youth are recommended to achieve at least 60 min/day of moderate-to-vigorous physical activity, no more than 2 h/day of recreational screen time, and a sleep duration of 9-11 h/night for 11-13-year-olds or 8-10 h/night for 14-17-year-olds. Meeting the physical activity, screen time, and sleep duration recommendations have previously been associated with substance use among adolescents. However, previous research has mainly examined these factors individually rather than looking at how these indicators could concurrently relate to substance use in this age group.

Low school belongingness and non-prescription opioid use among students in Ontario, Canada.

Objectives: School belonging impacts a range of factors, including academic performance, school attendance, relationships with peers and teachers, mental and physical health, and drug and alcohol use. Previous studies have shown that a lack of belonging to one's school is associated with substance use. The objective of the study was to examine the association between low school belongingness and the use of opioids in students in grades 9 through 12 in Ontario, Canada.

The Canadian 24-Hour Movement Guidelines and Psychological Distress among Adolescents: Les Directives canadiennes en matière de mouvement sur 24 heures et la détresse psychologique chez les adolescents.

Objective: The Canadian 24-Hour Movement Guidelines for Children and Youth recommend at least 60 minutes of physical activity per day, 2 hours or less of recreational screen time per day, and 9 to 11 hours of sleep per night for 5 to 13 years old and 8 to 10 hours per night for 14 to 17 years old. This study examined the association between meeting these guidelines and psychological distress among adolescents.

Methods: The present cross-sectional sample included 6,364 students aged 11 to 20 years from the 2017 Ontario Student Drug Use and Health Survey.

24-Hour Movement Behaviors and Internalizing and Externalizing Behaviors Among Youth.

Purpose: The Canadian 24-Hour Movement Guidelines for Children and Youth (≥60 minutes of moderate-to-vigorous physical activity per day, ≤2 hours of recreational screen time per day, and 9-11 hours of sleep per night for 5-13 years old) are associated with better physical health, but less is known about how these behaviors are related to mental health. This study examined the association of meeting these guideline recommendations with internalizing and externalizing behaviors among youth.

Methods: A large and broadly representative cross-sectional sample of 9- to 11-year-old U.