Long-term trends in the consumption of sugary and diet soft drinks among adolescents: a cross-national survey in 21 European countries.

PURPOSE: To assess country-level trends in the prevalence of daily consumption of sugary (2002-2018) and diet (2006-2018) soft drinks among European adolescents, overall and by family material affluence. METHODS: We used 2002, 2006, 2010, 2014 and 2018 data from the 'Health Behaviour in School-aged Children' survey. Nationally representative samples of adolescents completed a standardised questionnaire at school, including a short food frequency questionnaire (n = 530,976 and 21 countries for sugary soft drinks; n = 61,487 and 4 countries for diet soft drinks). We classified adolescents into three socioeconomic categories for each country and survey year, using the Family Affluence Scale. Multilevel logistic models estimated time trends, by country. RESULTS: Sugary soft drinks: the prevalence of daily consumption (≥ 1×/day) declined in 21/21 countries (Plinear trends ≤ 0.002). Absolute [range - 31.7 to - 3.4% points] and relative [range - 84.8 to - 22.3%] reductions varied considerably across countries, with the largest declines in Ireland, England and Norway. In 3/21 countries, the prevalence of daily consumption decreased more strongly in the most affluent adolescents than in the least affluent ones (P ≤ 0.002). Daily consumption was more prevalent among the least affluent adolescents in 11/21 countries in 2018 (P ≤ 0.002). Diet soft drinks: overall, daily consumption decreased over time in 4/4 countries (Plinear trends ≤ 0.002), more largely among the most affluent adolescents in 1/4 country (P ≤ 0.002). CONCLUSIONS: Daily consumption of sugary and diet soft drinks in European adolescents decreased between 2002 (2006 for diet drinks) and 2018. Public health interventions should continue discouraging daily soft drink consumption, particularly among adolescents from lower socioeconomic groups.

Sixteen-year trends in adolescent consumption of sugar-sweetened soda in six European countries with a soda tax and comparison countries: a repeated cross-sectional survey analysis.

OBJECTIVE: To examine changes in the proportions of daily, weekly and occasional consumers of sugar-sweetened soda in six European countries that introduced/updated a tax between 2001-2002 and 2017-2018 and in neighbouring comparison countries (without a tax). DESIGN: Repeated cross-sectional surveys. SETTING: Health Behaviour in School-aged Children study, spanning five survey years (school years 2001-2002 to 2017-2018). PARTICIPANTS: Nationally representative samples of 13-year- and 15-year-old adolescents (n 236 623, 51·0 % girls). RESULTS: Tax sizes (€0·02/l to €0·22/l) and pre-tax soda consumption were heterogeneous across countries. Prevalence of daily soda consumption reduced in the survey year following tax implementation in Latvia (from 17·9 to 11·9 %, P = 0·01), Finland (4·2 to 2·5 %, P = 0·001), Belgium (35·1 to 27·8 %, P < 0·001) and Portugal (17·4 to 14·9 %, P = 0·02), but not in Hungary (29·8 to 31·3 %, P = 0·47) or France (29·4 to 28·2 %, P = 0·27). However, reductions were similar (Finland) or smaller (Belgium, Portugal) than those in the comparison countries, except in Latvia where the reduction was larger (Pinteraction < 0·001). Prevalence of weekly soda consumption remained stable (Finland, Hungary and France) or increased (Latvia, Belgium); only Portugal experienced a decline (P < 0·001), which was larger than in the comparison country (Pinteraction < 0·001). Prevalence of occasional soda consumption (<1x/week) did not rise after implementation of the tax in Latvia, Finland, Hungary, France or Belgium, or the rise was similar to the comparison country in Portugal (Pinteraction = 0·15). CONCLUSIONS: Countries with a soda tax did not experience larger beneficial changes in post-tax adolescent consumption frequency of soda than comparison countries. Further studies, with different taxation types, are needed in the adolescent population.

Making the best out of youth-The Improve the Youth project.

Adolescents' mental health determines their general health and their mental health as adults. Improve the Youth project (ITY) was created and implemented among Polish and Portuguese adolescents. The aim of the project was to investigate the well-being of Portuguese and Polish adolescents, and to evaluate differences between them in self-rated health, life satisfaction and perceived psychosomatic health. A mixed-method approach was applied. The quantitative part was based on Health Behaviour in School-aged Children (HBSC) 2014 data, including adolescents aged 11-15 years (6026 in Portugal; 4545 in Poland). This study meets the issues raised by the HBSC results, regarding mental health in adolescence, and it is aimed to improve adolescents' social participation and active citizenship. In most study areas, findings in Poland were less favourable than in Portugal. The qualitative part was developed to recognize the main threats for adolescent's well-being. In this, they emphasised that every opportunity to talk about their feelings and needs resulted in improvement of their mental health. Elevated levels of stress were connected to environmental pressure and high expectations that they were often unable to cope with. Nervousness, perceiving that it was impossible to meet expectations, the desire to keep up with their peers, fatigue, and uncertainty of the future increased the feelings of frustration. The differences found between countries may be due to cultural roots, surfacing the relevance of assessing adolescents' mental health needs in the social context of family, school and peers. This study also aims to raise awareness among educators and stakeholders to the importance of youth engagement.

Changes in physical activity of adolescent girls in the context of their perception of the Healthy Me programme.

BACKGROUND: An assumption was made that results of programme evaluation lead to better understanding for whom this intervention may work. The aim of the article is to compare the changes in physical activity of the intervention programme participants depending on subjective assessment of its impact. METHODS: The data were obtained from 14- to15-year-old Polish girls (N = 1120) from 48 random selected secondary schools participating in the 1-year Healthy Me programme in the 2017/2018. Schools were randomly assigned to one of two types of intervention or to a control (null) group. Satisfaction with the programme according to 21 criteria was measured retrospectively just after the intervention. Change in MVPA (moderate-to-vigorous physical activity) during the programme implementation was assessed in relation to satisfaction level, and adjusted for initial MVPA. RESULTS: In total, the MVPA did not change significantly comparing pre- and post-intervention surveys (3.94 ± 1.94 vs. 3.87 ± 1.93)-P = 0.093. However, the perceived notable improvement of functioning in 10 out of 21 areas was related to the unquestionable increase in MVPA (P ≤ 0.001). With respect to the four impact areas, an interaction was demonstrated between an intervention group and an improvement in the domain-specific functioning. The beneficial impact of the programme on these areas was associated with the improvement of physical activity only in case of full and null intervention. CONCLUSIONS: Indicators related to the implementation process and the results obtained during the Healthy Me programme evaluation could represent a change in motivational and environmental factors that indirectly affects adolescent girl's physical activity.

The Association Between Physical Activity and General Life Satisfaction in Lower Secondary School Students: The Role of Individual and Family Factors.

The objective of the paper was to investigate the association between PA and general life satisfaction in adolescents, taking into account family affluence and selected psychological, family and school factors. The survey (2015) involved 4085 Polish lower-secondary school students. Life satisfaction was measured with the abridged Students' Life Satisfaction Scale (SLSS). Vigorous Physical Activity, self-esteem, family affluence, family relations and the perception of the school environment were considered as independent variables. Hierarchical and path models were applied. The mean SLSS score was M = 4.66 (SD = 2.23), and 36.9% of its variability was explained-mainly by self-esteem. The impact of PA on self-esteem became stronger when family affluence decreased, which led to the conclusion that material status may modify the impact of behavioural factors on the SLSS scores' variability in adolescence.

Physical activity, BMI and body weight perception among 15-year-old boys and girls in Poland in the light of international comparisons.

BACKGROUND: The wrong subjective assessment of body mass may have consequences for the health, quality of life and proper functioning of adolescents in society. AIM: The purpose of the study is to provide a detailed analysis of the discrepancies between the objective and subjective assessment of body mass by 15-year-old boys and girls in Poland against the background of international statistics and to assess the effect of physical activity on the level and directions of these discrepancies. MATERIAL AND METHODS: The data concerned 72037 schoolchildren from 42 countries, including 1484 in Poland. The measure of objective body mass was the BMI categorized according to Cole's criteria. Research focused on the relation between the mean BMI and the subjective perception of their body mass by adolescents and the discrepancy in this assessment. In addition, the level of physical activity (MVPA) was taken into account. RESULTS: In Poland the percentage of adolescents with overweight was lower than the international average and amounted to 12.3% vs. 15.2%. The percentage of 15-year-old boys with overweight in Poland is nearly three times higher than girls of the same age (18.7% vs. 6.5%) and is at the mean level for Health Behaviour in School-aged Children (HBSC) countries. According to international statistics, the percentage of adolescents who consider themselves overweight is 32.7%, which is two times higher than the percentage of actual excess body weight. Polish girls are systematically first in the ranking of those who consider themselves too fat. It was demonstrated that Polish girls with a normal BMI for their age who consider themselves too fat are on average slimmer than their peers in other countries. There is a correlation between Moderate-to-Vigorous Physical Activity (MVPA) and the accuracy of self-assessment of body mass and the type of mistakes made in that assessment, which is more clearly marked among boys. CONCLUSION: There are clear geographical and cultural differences in the level of discrepancies between the objective and subjective assessment of body mass among teenagers. Physical activity modifies these discrepancies.

Polish Adaptation And Validation Of The Physical Appearance Comparison Scale (Pacs) - An Analysis Among Young People In Late Adolescence In The Context Of Obesity.

INTRODUCTION: The PACS scale is a tool which is widely used in foreign studies to evaluate the tendency towards appearance comparisons in social situations. People inclined to make such comparisons reveal a higher level of dissatisfaction with their body and a higher inclination towards problem eating. PURPOSE OF THE STUDY: The main purpose of the study was to adapt the PACS scale. A factor structure assessment and reliability analysis of the Polish version was carried out. The correlation between PACS and pubertal development indicators, the body mass index and psycho-social factors and eating behaviours were evaluated as part of the validity analysis. MATERIAL AND METHODS: The data were derived from the Internet-based study of problem eating behaviours conducted by the Institute of Mother and Child during the 2014/2015 school year. The analyses covered 1285 second grade upper secondary school students (47.2% boys). The mean age was 17.59 years (SD=0.39). An exploratory and confirmatory factor analysis of the PACS questionnaire was performed. Using the Kruskal-Wallis test or the Pearson's r correlation, the association between (PACSPL) and perceived pubertal timing, BMI, the body image (BIS), self-perception of body mass, self-esteem (RSES), self-esteem in social relations (SPPA-SSE), problem eating behaviours (TFEQ-13) were evaluated. The linear regression method was used to estimate the impact of PACS-PL on selected variables in the BMI groups in order to investigate of the moderation effect. RESULTS: The shortened 3-item Polish version of the scale (PACS-PL) was considered optimal. It is characterized by high reliability (Cronbach's α=0.868), and the main factor explains 79.1% of the variance of the scale results. The model also shows high values of fit indicators: χ2 = 1.144 (df=1, p=0.285), GFI=0.999, AGFI=0.996, CFI=1.000, NFI=0.999, TLI-1.000, RMSEA=0.011. Girls display a stronger tendency to compare their appearance with others. The PACS-PL scale demonstrates the expected correlations with developmental, psycho-social and behavioural factors, this correlation being stronger among girls. It was also shown that the PACS-PL index is a stronger predictor of dissatisfaction with the body and lower self-esteem in the group of obese adolescents. CONCLUSIONS: The Polish version of the scale, PACS-PL, is a reliable and valid tool for evaluating the tendency to compare one's appearance with others in late adolescence. The subject of social comparison ought to become an element of prevention activities associated with acceptance of one's body and selfesteem, especially among young people with excess body weight.

Current trends in tobacco smoking among 15-year-old adolescents in Poland in the background of 30 countries.

The international HBSC (Health Behaviour in School-aged Children) survey has enabled the comparison of the patterns of changes with respect to a number of health indicators in adolescence. The aim of the study was to show international trends and how the position of Poland in international rankings of smoking prevalence has changed since 2002. Material and Methods: The study comprised 30 countries for which data was available from four rounds of HBSC survey (2002-2014). In total, 218 759 15-year-olds were surveyed, including 7289 in Poland. For each country a linear trend was estimated, separately for boys and girls, to describe changes in regular smoking (daily or at least once a week). Results: In the investigated period, the percentage of 15-year-old boys who smoke every week fell in Poland from 26.2% to 15.5%, and the respective percentage in girls decreased from 17.2% to 14.7%. This means annual decrease of 0.88% in boys and 0.24% in girls. In a combined international sample, exactly the same as in Poland rate of change was noted in boys; however, a definitely faster in girls (0.95% a year). The highest rate of change was observed in Ukraine, Germany and Norway, while the lowest in Greece, Croatia and Israel. Poland's position in the international ranking moved from 8th to 24th, providing that the countries are listed according to the growing percentage of 15-year-olds of both genders who smoke regularly. Conclusions: Decrease in the prevalence of smoking among Polish adolescents, observed from the beginning of this century, has been undoubtedly a success related to the implemented preventive measures. However, attention should be drawn to the strategies launched in countries which achieved better results than Poland, as well as to the reasons of less positive trends among Polish girls.

Fruit and vegetable consumption trends among adolescents from 2002 to 2010 in 33 countries.

BACKGROUND: Fruit and vegetable consumption is linked to many positive health outcomes, nevertheless many adolescents do not consume fruit and vegetables on a daily basis. METHODS: Data of 488,951 adolescents, aged 11-, 13- and 15- years, from 33 mainly European and North American countries/regions participating in the cross-sectional Health Behaviour in School-aged Children surveys in 2002, 2006 and 2010, were used to investigate trends in daily fruit and vegetable consumption between 2002 and 2010. RESULTS: Multilevel logistic regression analyses showed an increase in daily fruit and vegetable consumption between 2002 and 2010 in the majority of countries for both genders and all three age groups. A decrease in consumption was noticed in five countries for fruit and five countries for vegetables. CONCLUSION: Overall, a positive trend was noticed, however increases in daily fruit and vegetable consumption are still indicated.

[Smoking among 15-year-olds in Poland depending on selected sociodemographic factors--trends 2006-2014]. / Palenie tytoniu przez 15-latków w Polsce w zaleznosci od wybranych czynników socjodemograficznych--tendencje zmian 2006-2014.

International HBSC (Health Behavior in School-aged Children) studies provide an unique opportunity to monitor trends in health behaviours. The purpose of the present study is to describe current trends in the prevalence and determinants of daily smoking among Polish adolescents. Materials and methods: Analyses were based on data from the samples of 15-year-olds who participated in the HBSC study in 2005/2006, 2009/2010 and 2013/2014 (total N = 5722). A dichotomous variable was created, representing daily smoking. Family socioeconomic status was described by a subjective indicator (PFW--perceived family well-off) and neighborhood well-off Daily smoking rates decreased in 2006-2014, however gender influenced. An upward trend was observed in girls. Gender convergence in smoking was due to coexisting increase of rates in girls and decrease in boys. Based on the data from the combined sample, daily smoking was more prevalent in poor families and in regions with more local problems, which applied both to boys and girls. An increase risk of smoking in rich families was observed only in 2006. In the last survey only local area status remained in the final model. Conclusions: Preliminary results of the new HBSC study conducted in Poland suggest unfavorable trends in tobacco smoking mostly in adolescent girls. It is worth to pay attention to the environmental aspects of smoking in adolescence and to analyze both the impact of family and neighborhood well-off.

[Drinking motivates, depending on the use of tobacco and cannabis among adolescents]. / Motywy picia alkoholu w zaleznosci od uzywania tytoniu i marihuany przez mlodziez.

INTRODUCTION: Alcohol, tobacco and marijuana are the most common drugs used by adolescents. There is evidence of co-occurrence of alcohol use by young people with taking other problem behaviors, little is known about the causes of drinking depending on the type and severity of different substances use. Aim of the study is to find differences in the structure and the rank of drinking motives among people who smoke cigarettes or use marijuana. MATERIAL AND METHODS: The study was carried out on a nationwide sample of 1411 in mean age 17.7 years (53.3% girls) as a part of next series of HBSC study (Health Behaviour in School aged Children) conducted in 2010 .To investigate reasons for alcohol use, research instrument DMQ-R (Drinking Motives Questionnaire-Revised) was used. Questions about currently tobacco smoking and marijuana or, hashish use during last year were also asked. One-way ANOVA with post-hoc test Scheffe were used for analysis. Results: The highest means were noticed in the dimension of social motives and they differed significantly due to smoking (F (2, 1170) = 35.76, p <0.001) and marijuana use (F (2, 1.139) = 30.73, p <0.001). Regular smokers have obtained lower mean (M = 61.2, SD = 25.2) than frequently marijuana users (M = 65.9, SD = 25.1). Conformity motives were the weakest motives of drinking among tobacco or marijuana users. Significant differences due to the type and frequency of substance use occurred only in the groups were taking into account tobacco smoking, (F (2,1176)= 4.25, p <0.05). Differences of the levels of motivation to deal with problems (coping motives) were obtained due to tobacco smoking (F (2,1172) = 44.20, p <0.001) and marijuana use (F (2, 1143) = 9.18, p <0.001). Regular smokers were more pointed on the negative intrinsic motivation (M = 38.1, SD = 29.4) than marijuana users (M = 33.5, SD = 29.6). Means in terms of motivation for enhancement also differed in the groups taking into account tobacco smoking (F (2,1174) = 30.63, p <0.001) and cannabis use (F(2,1143)= 52.69, p <0.001). Marihuana users were more likely to have a greater means in this type of motivation (M = 42.6, SD = 27) than regular smokers (M = 32.9, SD = 25.8). Along with a decrease of smoking frequency, means in the studied dimensions were also decreased. Girls were more likely to drink to cope with problems than boys. In other dimensions of motivation to drink means were higher in boys. Means obtained among adolescents who used tobacco or marijuana were slightly higher than in the overall sample. CONCLUSIONS: The strongest reasons for alcohol drinking among adolescent's tobacco smokers and cannabis users are social motives. Smokers are more likely to drink alcohol in order to cope with the problems, and among adolescents who use marijuana more important reason of drinking is to improve good mood. Ranking of drinking motives varies according to gender.

Different Categories of Social Media Use and Their Association With Body Image Among Adolescents in 42 Countries.

Objectives: Social media has become integrated into adolescents' lives and influences body image perceptions. Our study examined four patterns of social media use (SMU): non-active, active, intensive, and problematic. We hypothesised that intensive SMU and problematic SMU would be associated with negative body image (negative subjective body weight) and over/underestimated body weight congruence, compared to non-active and active SMU. In addition, we expect these associations to be stronger for girls. Methods: Data from 190,892 respondents aged 11, 13, and 15 from 42 countries involved in the Health Behaviour in School-aged Children study were analysed. Results: Findings revealed higher rates of intensive or problematic SMU among adolescents who perceived themselves as too fat or too thin. Two-level regression analyses showed intensive and problematic SMU as more likely to perceive themselves as too fat or too thin than active users. The association was significant among intensive and problematic girl social media users, whereas, among boys, the relationship was only significant for problematic users. Conclusion: Our findings highlight the importance of assessing SMU patterns to evaluate associations with body image.

Similarities and Differences between Psychosocial Determinants of Bullying and Cyberbullying Perpetration among Polish Adolescents.

Despite the extensive literature on the psychosocial determinants of bullying and cyberbullying among adolescents, there is not sufficient comprehensive analysis of the differences between perpetrators. This study aims to assess the psychosocial similarities and differences between bullies and cyberbullies. Data of 3650 students from two grades, K9 and K11 (47% females, mean age = 16.53), were used from a survey conducted in Poland in 2018 as part of the Health Behaviour in School-aged Children study. Perpetration was measured by questions adapted from the Olweus Bully/Victim Questionnaire. The following predictors were analyzed: demographic, socioeconomic status measured with the Family Affluence Scale-III (FAS), and individual and social factors. Multiple binary logistic regression was applied. The random sampling design was based on stratification according to the local deprivation index of the region where the school was located. Male gender, younger age, and non-intact family were associated with a higher risk of bullying and cyberbullying. Family support, empathy, school performance, and school attachment had a protective effect against both aggressive behaviors. Life dissatisfaction and high FAS were revealed as determinants of cyberbullying and local deprivation of bullying only. Bullying and cyberbullying school prevention programs should take into account these psychosocial differences and consider the economic deprivation of the region.

Gender-specific social and environmental correlates of active travel to school in four European countries: the HBSC Study.

Introduction: Despite the health benefits, a large proportion of girls and boys in Europe do not travel to school actively. A better understanding of the correlates associated with this behavior could guide interventions. This study examines perceived social and environmental correlates of active travel to school (ACTS) from the 2017/18 Health Behavior in School-Aged Children (HBSC) survey in four European countries, with a special emphasis on gender differences (n = 22,023). Methods: Logistic regression was conducted to analyze associations between the perceived importance of each correlate and ACTS behavior for 11-, 13-, and 15-year-old girls and boys from Germany, Czechia, Poland, and Slovakia. All models were adjusted for age, family affluence, and meeting World Health Organization recommendations for moderate-to-vigorous physical activity. Results: Rates of ACTS significantly differed between girls and boys. In Czechia, 65% of girls and boys traveled to school actively, followed by Slovakia (61.4% girls and 58.4% boys), Poland (57.7% girls and 60.2% boys), and Germany (42.6% girls and 48.6% boys). Girls were less likely to actively travel to school compared to boys (odds ratio [OR]: 0.92, 95% confidence interval [CI]: 0.87-0.97). Increasing age (OR: 0.95, 95% CI: 0.93-0.97) and a greater distance to school index (OR: 0.89, 95% CI: 0.88-0.90) were both negatively associated with ACTS. The perceived importance of living closer to school and of road and neighborhood safety was positively associated with ACTS, with a stronger association in boys than in girls for neighborhood safety. On the contrary, the perceived importance of having people to walk with was negatively associated with ACTS, with a stronger association in girls (OR: 0.74, 95% CI: 0.65-0.84) than in boys (OR: 0.77, 95% CI: 0.66-0.88). Discussion: This study provides insights into perceived social and environmental correlates associated with ACTS behavior. Future research should include gender-specific perceptions and more in-depth investigations of correlates encouraging ACTS, especially considering social aspects, safety issues, and the structuring of the environment in different cultural settings.

The Correlation between Adolescent Daily Breakfast Consumption and Socio-Demographic: Trends in 23 European Countries Participating in the Health Behaviour in School-Aged Children Study (2002-2018).

Breakfast is often considered the most important meal of the day and can benefit adolescent health in several ways. The aims of the present study were (1) to identify adolescents' socio-demographic (sex, family affluence and family structure) determinants of daily breakfast consumption (DBC) and (2) to describe trends in DBC among adolescents across 23 countries. Cross-sectional surveys of nationally representative samples of adolescents (aged 11, 13, and 15 years) (n = 589,737) participating in the Health Behaviour in School-aged Children (HBSC) survey from 2002 to 2018 were used. Multilevel logistic regression analyses modeled DBC over time, adjusted for family affluence, family structure and year of survey. Four countries showed an increased trend in DBC (the Netherlands, Macedonia, Slovenia, and England). A significant decrease in DBC was observed in 15 countries (Belgium-Fr, France, Germany, Croatia, Portugal, Spain, Hungary, Poland, Russian Federation, Ukraine, Denmark, Finland, Latvia, Lithuania and Sweden). In 4 countries no significant change was observed (Czech Republic, Scotland, Ireland and Norway). In most of the countries (n = 19), DBC was higher among the adolescents from high-affluence homes. In all the countries analysed, the adolescents living in two-parent households report higher DBC use than those in single-parent households. More than half of the countries showed a decrease in DBC. There is a need to implement key interventions by developing different strategies (education, incorporating educational curriculum and counselling programmes) to increase DBC. Comparing DBC patterns across HBSC countries is important for understanding regional and global trends, monitoring strategies, and developing health promotion programmes.

[Overweight and obesity in lower-secondary school students in relation to selected behavioural factors. Changes in 2006-2010]. / Nadwaga i otylosc wsród uczniów gimnazjum w zaleznosci od wybranych czynników behawioralnych. Zmiany w latach 2006-2010.

INTRODUCTION: The HBSC (Health Behaviour in School-aged Children) survey, repeatedly carried out among school children in Poland, allows to follow the trends in the occurrence of overweight and obesity as well as changes in selected behaviors, which may influence body weight. THE AIM of this paper is to assess in the years 2006-2010 the prevalence of excess and changes of Polish adolescents' body weight, depending on the pattern of behaviors associated with physical activity and leisure time. MATERIAL AND METHODS: Data was taken from the 2006 and 2010 HBSC surveys carried out on a total sample of 7133 lower secondary school children. Cluster analysis was applied to define leisure time activity patterns. Combined physical activity index and the average time spent watching television and playing computer games per day were taken as criteria for classification. RESULTS: In 2006-2010, the proportion of adolescents with overweight or obesity (according to WHO 2007 criteria) increased from 17,7% to 22,0% in boys and from 7,9% to 13,4% in girls. In 2006, the proportion of pupils with overweight and obesity ranged from 12,6% to 17,1% in six defined subgroups, while in 2010 it ranged from 12,6% to 24,7%. No increase of overweight was observed in the cluster representing positive health behaviors. However, the decline in the proportion of adolescents that could qualify to this group is alarming. CONCLUSION: High physical activity does not always offset the impact of sedentary activities on increase of body mass.

Psychosocial Predictors of Body Weight Congruence in Adolescents Aged 15 and 17 Years in Poland: Findings from the Health Behaviour in School-Aged Children (HBSC) Study.

BACKGROUND: Body weight congruence (BWC) has implications for adolescent health. The main goal of this study was to examine the distribution of BWC and its relationship with six psychosocial factors. METHODS: A representative sample of N = 3508 adolescents aged 15 and 17 years (52.4% girls) derived from the Health Behaviour in School-aged Children study, conducted in 2017/2018 in Poland, was used. BWC groups were defined based on self-reported BMI and subjective assessment of weight: (1) correct perception; (2) overestimation, and (3). underestimation. Principal component analysis (PCA) extracted the following two factors: a socio-relational factor (SR) related to perceived social support and social self-efficacy, and a body attitudes and social media exposure factor (BAME). Using the total sample, multinomial logistic regression was applied to estimate their impact on the BWC, and gender-specific models were compared. RESULTS: Half (48.6%) of the adolescents correctly estimated their body weight, 31.0% overestimated it (girls 43.9%, boys 17.1%), and 20.0% underestimated it (boys 37.2%, girls 9.0%). Overestimation of body weight concerns 48.0% of normal weight girls, 50.0% of underweight girls, and 21.3% and 32.1% of normal weight and underweight boys, respectively. The percentage of normal weight (34.4%), and overweight and obese (30.8%) boys who underestimated their body weight was three times higher than the respective percentages of girls that underestimated their weight (9.0% and 11.9%). The SR factor protected adolescents from both underestimation (only in girls) and overestimation in the total sample (OR 0.74, 95%CI 0.68-0.81) and both genders. BAME increased this risk of overestimation in both genders (OR = 1.83, 95%CI 1.67-2.0), and the risk of underestimation among boys. CONCLUSIONS: Prevention programmes should include a wide range of psychosocial factors to improve BWC among adolescents.

Psychosocial Determinants of Adolescents' Cyberbullying Involvement-The Role of Body Satisfaction.

BACKGROUND: Although the relationship between adolescents' body image and cyberviolence has been proved, little is known about the place of body image among other psychosocial determinants. The study aimed to assess the relationship between body satisfaction and cyberbullying in the context of other psychosocial factors. METHODS: We used data of 5817 adolescents (47.6% boys, mean age = 15.43) from the survey conducted in 2018 in Poland as a part of the Health Behaviour in School-Aged Children. Four groups of cyberbullying involvement were defined: only bullies, only victims, both bullies and victims, and not involved. Body satisfaction and ten other independent variables were classified as sociodemographic, socioeconomic, individual and social factors. A series of multinomial logistic regression models were estimated and compared using the pseudo R-sq Nagelkerke coefficient. RESULTS: Although family support seemed to be the most protective, the findings have proved that body satisfaction reduces significantly the risk of cyberbullying. The relationship was more pronounced in victims and bully-victims. A slightly stronger protective effect of body satisfaction has been observed in boys. CONCLUSIONS: The strengthening of body image may be an effective measure to prevent adolescents' cyberbullying, as well as to bring about improvements in social support, connections to others, and school performance.

Everyday challenges faced by Polish teenagers during the COVID-19 pandemic in the context of selected demographic factors.

BACKGROUND: The enforced restrictions, including physical isolation and school lockdowns after the outbreak of the COVID-19 pandemic, have brought about anxiety and uncertainty the younger generation. OBJECTIVE: The main objective is to analyse the everyday challenges faced by adolescents in Poland during the time of social isolation in the COVID-19 pandemic. MATERIAL AND METHODS: A nationwide, online survey of adolescents aged 11-18 (N=2408) was conducted in April 2020. Quantitative and qualitative analyses were undertaken. Differences in the everyday challenges experienced during the COVID-19 pandemic connected with gender, age and place of residence were analysed. RESULTS: Girls were significantly more likely than boys to perceive the limitations in contacts with others (friends and family) and the concerns about the health of relatives as a big difficulty. Among the youngest students (11-12 years of age), the lack of contact with friends and family and worries about their health and the fear of infection ranked higher than for other students. For the oldest (17-18) the lack of private time and space and not being able to meet one's boyfriend/ girlfriend were the most troublesome. The necessity to stay at home and the inconvenience resulting from the lack of outdoor exercise were ranked higher by urban students than by students living in rural areas. CONCLUSIONS: When planning campaigns in the near future to support the mental health of adolescents in the context of the pandemic it is recommended to include especially the youngest adolescents and those living in small and medium-sized cities.

What factors do young people define as determinants of their well-being? findings from the improve the youth project.

BACKGROUND: The UN has recognised well-being as a main goal of The Global Strategy for Women's, Children's and Adolescents' Health (2016-2030). OBJECTIVE: The aim was to identify the areas of mental health that are the most significant to teenagers. MATERIAL AND METHODS: The mixed-method approach was applied. Quantitative research included adolescents aged 11-15 years (6,026 in Portugal; 4,545 in Poland). HBSC study results (2013/2014) were analysed in terms of the following variables: self-rated health, life satisfaction (Cantril Ladder, KIDSCREEN-10 Index), and psychosomatic complaints (SCL scale). Focus workshops took place in 2018, with 72 teenagers aged 14 to 16. RESULTS: 16.6% of the Polish participants and 12.7% of the Portuguese participants were concerned about their health. Polish participants were less satisfied with their life [KIDSCREEN score: 25.48 for Poland (SD=6.39), and 29.96 (SD=6.03) for Portugal]. Both nations associated mental health (MH) with the family setting and relationships with friends. An additional association among Portuguese teenagers involved social issues, whereas Polish adolescents were more focussed on relationships with various people in their environment, as well as on experiencing issues at school and in the family. CONCLUSIONS: Adolescent MH is determined by stress, environmental pressure and high expectations. The viewpoints of adolescents are the most valuable source of knowledge for specialists, researchers and youth institutions, who can benefit greatly from taking advantage of this resource.