Kristiina Ojala

ORCID: 0000-0001-9081-1891
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Research Areas
  • Obesity, Physical Activity, Diet
  • Research in Social Sciences
  • Eating Disorders and Behaviors
  • School Health and Nursing Education
  • Obesity and Health Practices
  • Nutritional Studies and Diet
  • Health and Lifestyle Studies
  • Impact of Technology on Adolescents
  • Childhood Cancer Survivors' Quality of Life
  • Child and Adolescent Health
  • Interprofessional Education and Collaboration
  • Psychological Well-being and Life Satisfaction
  • Behavioral Health and Interventions
  • Delphi Technique in Research
  • Physical Activity and Health
  • Total Knee Arthroplasty Outcomes
  • Child Development and Digital Technology
  • Health, psychology, and well-being
  • Competency Development and Evaluation
  • Health disparities and outcomes
  • Sport Psychology and Performance
  • Workplace Violence and Bullying
  • Social Media and Politics
  • Health and Wellbeing Research
  • Media Influence and Health

University of Jyväskylä
2011-2024

National Institute for Health Development
2007

(1) Background: The use of social media has become an integral part adolescents’ daily lives. However, the intensive can develop into a health-threatening addiction, but unfavourable health consequences occur even with less use. Social user groups categorized as no-risk, moderate risk (of developing problematic behaviour), and were examined reference to their prevalence, associations individual determinants health, increased between groups. (2) Methods: Finnish nationally representative HBSC...

10.3390/ijerph18041885 article EN International Journal of Environmental Research and Public Health 2021-02-15

Parents have significant influence on behaviors and perceptions surrounding eating, body image weight in adolescents. The aim of this study was to examine the prevalence dissatisfaction, difficulty communication with parents relationship between adolescents' dissatisfaction their (dieting or perceived need diet). Survey data were collected from adolescents 24 countries regions Europe, Canada, USA who participated cross-sectional 2001/2002 Health Behaviour School-Aged Children (HBSC) study....

10.1186/1471-2458-9-52 article EN cc-by BMC Public Health 2009-02-06

Fruit and vegetable consumption is linked to many positive health outcomes, nevertheless adolescents do not consume fruit vegetables on a daily basis.Data of 488,951 adolescents, aged 11-, 13- 15- years, from 33 mainly European North American countries/regions participating in the cross-sectional Health Behaviour School-aged Children surveys 2002, 2006 2010, were used investigate trends between 2002 2010.Multilevel logistic regression analyses showed an increase 2010 majority countries for...

10.1093/eurpub/ckv012 article EN European Journal of Public Health 2015-03-24

Despite the global obesity epidemic, few studies have performed cross-national comparisons of adolescents' attempts to lose weight and control practices. This study aims investigate matters mentioned above by status in Europe, Israel, North America. Nationally representative samples adolescents from over 30 countries completed an anonymous, standardized questionnaire as part Health Behaviour School-aged Children 2001/2002 survey. The prevalence likelihood were determined. effect status,...

10.1186/1479-5868-4-50 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2007-01-01

Background In the Nordic countries, substantial policy and intervention efforts have been made to increase adolescents' consumption of fruit vegetables reduce their intake sweets soft drinks. Some initiatives formulated in a collaboration implemented at national level. recent years, social inequalities food habits attracted particular governmental interest several addressing socioeconomic gradient highlighted. However, few internationally published studies evaluated how trends develop...

10.1371/journal.pone.0148541 article EN cc-by PLoS ONE 2016-02-09

The concept of health literacy (HL) may help us to better understand the mechanisms leading disparities, and focus on factors that can be influenced. However, not much is yet known about how HL related or whether association exists among adolescents. aim study was examine associations between structural stratifiers, indicators adolescents.The nationally representative Finnish Health Behaviour in School-aged Children survey data (n=3833) were collected from 13- 15-year-old pupils spring 2014....

10.1093/eurpub/ckz011 article EN European Journal of Public Health 2019-01-18

The COVID-19 pandemic has had implications for adolescents' interpersonal relationships, communication patterns, education, recreational activities and well-being. An understanding of the impact on their mental health is crucial in measures to promote post-pandemic recovery. Using a person-centered approach, current study aimed identify profiles two cross-sectional samples Finnish adolescents before after peak pandemic, examine how socio-demographic psychosocial factors, academic...

10.1186/s13034-023-00591-1 article EN cc-by Child and Adolescent Psychiatry and Mental Health 2023-04-29

Introduction . Overweight and perception of being overweight, may lead adolescent to lose weight. The aim the present study was investigate overweight adolescents’ self-perceived weight, body dissatisfaction, weight control behaviour during 1994–2010 in Finland. Methods country-representative, cross-sectional data 15-year olds were obtained from Health Behaviour School-aged Children (HBSC) study, conducted 1994 (; males: 48%), 1998 49%), 2002 50%), 2006 47%), 2010 48%). Results majority boys...

10.1155/2012/180176 article EN cc-by Journal of Obesity 2012-01-01

Aims: The aims of this study were to explore time-based trends socioeconomic differences in alcohol use and drunkenness Finnish adolescents from 1990 2014 investigate the significance two indicators detecting drunkenness. Methods: Data retrieved seven surveys conducted as part Health Behaviour School-aged Children (HBSC) Finland 2014. 15-year-old students, well status, including educational aspiration perceived family wealth, assessed via a self-report questionnaire. Logistic regression...

10.1177/1403494816684118 article EN cc-by-nc Scandinavian Journal of Public Health 2016-12-22

Breakfast is often considered the most important meal of day and can benefit adolescent health in several ways. The aims present study were (1) to identify adolescents' socio-demographic (sex, family affluence structure) determinants daily breakfast consumption (DBC) (2) describe trends DBC among adolescents across 23 countries. Cross-sectional surveys nationally representative samples (aged 11, 13, 15 years) (n = 589,737) participating Health Behaviour School-aged Children (HBSC) survey...

10.3390/nu15112453 article EN Nutrients 2023-05-24

Abstract Objective: The objective of the study is to examine relationship between weight‐control behaviors and self‐reported sociodemographic characteristics, weight status, perception body in a large, representative sample adolescents West Bank Gaza Strip territories Palestine. Method: Self‐report measures perception, height weight, were completed by 8,885 male female students aged 12–18 years from 405 randomly selected schools as part 2003/2004 Palestinian Health Behavior School‐aged...

10.1002/eat.20698 article EN International Journal of Eating Disorders 2009-05-12

The purpose of this study was to analyze changes in the prevalence weight reduction behaviors (WRBs) among European adolescents from 26 countries between 2001/2002 and 2017/2018. impact perception body on WLB also analyzed, with particular attention being paid overestimation.The data 639,194 aged 11, 13, 15 years who participated Health Behaviour School-aged Children survey were analyzed. Age-standardized rates WRB estimated separately by round gender for each country, using overall...

10.1016/j.jadohealth.2020.03.008 article EN cc-by-nc-nd Journal of Adolescent Health 2020-05-20

Aims: To investigate the associations between physical activity and pattern of risk health behaviour consisting smoking, alcohol consumption, snuff (snus), cannabis, condom use among 15-year-old adolescents, taking their educational aspirations family affluence into account. Methods: The data were collected in Health Behaviour School-aged Children (HBSC) study Finland 2006. Standardised questionnaires issued at schools to a nationally representative sample, which 84.5% (1710 pupils)...

10.1177/1403494811423429 article EN cc-by-nc Scandinavian Journal of Public Health 2011-10-31

Introduction Body weight perception (BWP) is associated with health behaviors. Current evidence points to an increase over time in both actual and perceived status among adolescents, however there limited on trends BWP cross-national samples of adolescents. Therefore, the aims this study were examine between 2002 2018 adolescents from 41 countries regions, including gender country differences explore role changes country-level overweight/obesity prevalence these trends.Methods Data used five...

10.1080/2574254x.2023.2218148 article EN Child and Adolescent Obesity 2023-07-02

We examined the associations between adolescents' health assets and various indicators (smoking, alcohol use, sleep length, physical activity, healthy eating, oral health, self-reported multiple complaints). A nationally representative sample was drawn from Finnish-speaking schools, comprising 13- 15-year-old adolescents (n = 3833). The measures taken covered assets, which were labelled Family-financial, Psychological, Family-social, Friends-social, School-social, Human. Our analysis applied...

10.1007/s00038-019-01280-7 article EN cc-by International Journal of Public Health 2019-07-12

WHO-Koululaistutkimus on Suomessa käytetty nimi Health Behaviour in School-aged Children (HBSC) -tutkimukselle, jonka kyselyyn vastasi 11-, 13- ja 15-vuotiaita koululaisia yli 50 maasta aineistokeräyksessä 2021/2022. Ensimmäisen aineistonkeräys oli 40 vuotta sitten vuonna 1983 2022 aineistoa kerättiin 11. kerran. anonyymiin vastaavat koululaiset ovat perusopetuksen 5., 7. 9. luokalta. WHO-Koululaistutkimuksen tavoitteena tuottaa kansainvälisesti vertailukelpoista kansallisesti tärkeää tietoa...

10.17011/jyureports/2023/25 article FI cc-by 2023-11-03

<strong>Purpose:</strong> Physical activity promotes a positive physical self-image, but less is known about whether the effect covers general self-evaluation of adolescent appearance. This study aimed to further explore associations between and body-esteem in Finnish adolescents, via country-representative cross-sectional design. <strong>Methods:</strong> The data for were drawn from component Health Behaviour School-aged Children (HBSC) (2014), using surveys 15-year-old adolescents...

10.5334/paah.107 article EN cc-by Physical Activity and Health 2021-08-06
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