Jorma Tynjälä
Biographic Data
| ID | 6838815 |
|---|---|
| NAME | Jorma Tynjälä |
| GIVEN NAMES | Jorma |
| FAMILY NAME | Tynjälä |
| SIGNATURE | TYNJÄLÄ J |
| AFFILIATIONS | University of Jyväskylä |
| ORCID | 0000-0002-5908-6051 |
| VERIFIED | Yes |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 7 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1993 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 1 |
Associations between adolescents’ energy drink consumption frequency and several negative health indicators
Energy drink consumption, even infrequent, was associated with several negative health indicators, and the reporting of these increased with the frequency of energy drink consumption. The findings support the concerns of health authorities regarding the negative associations between energy drink consumption and health, even among persons as young as 13 years. There is evidence to support specific policy level actions, including restrictions on th…
Problematic Social Media Use and Health among Adolescents
(1) Background: The use of social media has become an integral part of adolescents' daily lives. However, the intensive use of social media can develop into a health-threatening addiction, but unfavourable health consequences can occur even with less use. Social media user groups categorized as no-risk , moderate risk (of developing problematic behaviour), and problematic use were examined with reference to their prevalence, their associations wi…
How Are Adolescents Sleeping? Adolescent Sleep Patterns and Sociodemographic Differences in 24 European and North American Countries
PURPOSE: Insufficient and poor sleep patterns are common among adolescents worldwide. Up to now, the evidence on adolescent sleep has been mostly informed by country-specific studies that used different measures and age groups, making direct comparisons difficult. Cross-national data on adolescent sleep that could inform nations and international discussions are lacking. We examined the sleep patterns of adolescents across 24 countries and by gen…
Does Sleep Mediate the Association between School Pressure, Physical Activity, Screen Time, and Psychological Symptoms in Early Adolescents? A 12-Country Study
This study examines the mediating role of sleep duration and sleep onset difficulties in the association of school pressure, physical activity, and screen time with psychological symptoms in early adolescents. Data were retrieved from 49,403 children (13.7 ± 1.6 years old, 48.1% boys) from 12 countries participating in the World Health Organization (WHO) "Health Behaviour in School-aged Children" 2013/2014 study. A validated self-report questionn…
International Trends in Adolescent Screen-Time Behaviors From 2002 to 2010
Socioeconomic differences in adolescents’ smoking
This study indicated different patterns of socioeconomic difference in smoking between Chinese and Finnish adolescents by gender and by smoking behaviour, which suggests that socioeconomic inequalities in smoking are different among adolescents in countries with different stage of smoking. Country specific policies and interventions for different target groups should be encouraged and designed for reducing the prevalence of adolescents' smoking
Reliability and Validity of Family Affluence Scale (FAS II) among Adolescents in Beijing, China
Sleeping habits of Finnish school children by sociodemographic background
This study investigated sleeping habits and sleep difficulties by selected sociodemographic background variables (age, sex, fathers occupation, urban v. rural environment and geographical region of Finland) among 11- to 16-year-old Finnish school children. The study is part of a larger, comparative, WHO-coordinated project on the health and life-style of school children (Health Behavior of School Aged Children—A WHO Cross-National Survey, the HBS…
Sleeping habits of Finnish school children by sociodemographic background
This study investigated sleeping habits and sleep difficulties by selected sociodemographic background variables (age, sex, fathers occupation, urban v. rural environment and geographical region of Finland) among 11- to 16-year-old Finnish school children. The study is part of a larger, comparative, WHO-coordinated project on the health and life-style of school children (Health Behavior of School Aged Children—A WHO Cross-National Survey, the HBS…
Reliability and Validity of Family Affluence Scale (FAS II) among Adolescents in Beijing, China
International Trends in Adolescent Screen-Time Behaviors From 2002 to 2010
Socioeconomic differences in adolescents’ smoking
This study indicated different patterns of socioeconomic difference in smoking between Chinese and Finnish adolescents by gender and by smoking behaviour, which suggests that socioeconomic inequalities in smoking are different among adolescents in countries with different stage of smoking. Country specific policies and interventions for different target groups should be encouraged and designed for reducing the prevalence of adolescents' smoking
Does Sleep Mediate the Association between School Pressure, Physical Activity, Screen Time, and Psychological Symptoms in Early Adolescents? A 12-Country Study
This study examines the mediating role of sleep duration and sleep onset difficulties in the association of school pressure, physical activity, and screen time with psychological symptoms in early adolescents. Data were retrieved from 49,403 children (13.7 ± 1.6 years old, 48.1% boys) from 12 countries participating in the World Health Organization (WHO) "Health Behaviour in School-aged Children" 2013/2014 study. A validated self-report questionn…
How Are Adolescents Sleeping? Adolescent Sleep Patterns and Sociodemographic Differences in 24 European and North American Countries
PURPOSE: Insufficient and poor sleep patterns are common among adolescents worldwide. Up to now, the evidence on adolescent sleep has been mostly informed by country-specific studies that used different measures and age groups, making direct comparisons difficult. Cross-national data on adolescent sleep that could inform nations and international discussions are lacking. We examined the sleep patterns of adolescents across 24 countries and by gen…
Problematic Social Media Use and Health among Adolescents
(1) Background: The use of social media has become an integral part of adolescents' daily lives. However, the intensive use of social media can develop into a health-threatening addiction, but unfavourable health consequences can occur even with less use. Social media user groups categorized as no-risk , moderate risk (of developing problematic behaviour), and problematic use were examined with reference to their prevalence, their associations wi…
Associations between adolescents’ energy drink consumption frequency and several negative health indicators
Energy drink consumption, even infrequent, was associated with several negative health indicators, and the reporting of these increased with the frequency of energy drink consumption. The findings support the concerns of health authorities regarding the negative associations between energy drink consumption and health, even among persons as young as 13 years. There is evidence to support specific policy level actions, including restrictions on th…
Medicine (8 works) · Demography (7 works) · Psychology (6 works) · Obesity, Physical Activity, Diet (5 works) · Public health (5 works) · Demography (4 works) · Environmental health (4 works) · Child Development and Digital Technology (3 works) · Developmental psychology (3 works) · Impact of Technology on Adolescents (3 works)