The aim of this study was to investigate the test-retest reliability of the motives for undertaking physical activity (PA) items from the Health Behavior in School-Aged Children (HBSC) study questionnaire among Slovak and Czech adolescents and to determine whether this reliability differs by gender, age group and country. We obtained data from 580 students aged 11 and 15 years old (51.2% boys) who participated in a test and retest study with a four-week interval in 2013 via the Health Behavior in School-Aged Children cross-sectional study in the Czech Republic and Slovakia. We estimated the test-retest reliability of all 13 dichotomized motives by using Intraclass Correlation Coefficients (ICC) and Cohen's Kappa statistics, for continuous and dichotomized motives, respectively. Test-retest reliability showed moderate agreement for nine motives (ICC from 0.41 to 0.60) and fair agreement for four motives (ICC from 0.33 to 0.40). Kappa statistics were similarly moderate to large (0.33 to 0.61), except for three motives with small or trivial correlations. The motives "To improve my health" and "To enjoy the feeling of using my body" had consistently low Kappas and correlations. Overall, the results of this study suggest that most questions on motives for PA on the HBSC questionnaire have acceptable test-retest characteristics for use among adolescents.

• Klíčová slova
• Health Behavior in School-Aged Children (HBSC) study, active living, adolescence, gender, health-related behavior, motivation,
• MeSH
• cvičení * MeSH
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• průřezové studie MeSH
• průzkumy a dotazníky normy   MeSH
• psychometrie MeSH
• reprodukovatelnost výsledků MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Česká republika MeSH
• Slovenská republika MeSH

OBJECTIVES: Participation in organized activities is related with a range of positive outcomes, but the way such participation is measured has not been scrutinized. Test-retest reliability as an important indicator of a scale's reliability has been assessed rarely and for "The scale of participation in organized activities" lacks completely. This test-retest study is based on the Health Behaviour in School-aged Children study and is consistent with its methodology. METHODS: We obtained data from 353 Czech (51.9 % boys) and 227 Slovak (52.9 % boys) primary school pupils, grades five and nine, who participated in this study in 2013. We used Cohen's kappa statistic and single measures of the intraclass correlation coefficient to estimate the test-retest reliability of all selected items in the sample, stratified by gender, age and country. RESULTS: We mostly observed a large correlation between the test and retest in all of the examined variables (κ ranged from 0.46 to 0.68). Test-retest reliability of the sum score of individual items showed substantial agreement (ICC = 0.64). CONCLUSIONS: The scale of participation in organized activities has an acceptable level of agreement, indicating good reliability.

• Klíčová slova
• Adolescents, HBSC, Organized activities, Reliability, Test–retest,
• MeSH
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• průzkumy a dotazníky normy   MeSH
• reprodukovatelnost výsledků MeSH
• účast komunity statistika a číselné údaje   MeSH
• volnočasové aktivity * MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH
• Slovenská republika MeSH

OBJECTIVES: Better assessment of the reliability of the physical activity and sedentary behaviour items across countries in all WHO regions is highly needed. The aim of the study was to examine the test-retest reliability of selected physical activity and sedentary behaviour items of the HBSC questionnaire in Czech, Slovak and Polish adolescents. METHODS: We obtained data from 693 Czech, Slovak and Polish (50.9% boys) primary school pupils, grades five (mean age = 11.08; SD = 0.45) and nine (mean age = 15.12; SD = 0.45), who participated in a test-retest study in 2013. We used the single measures of Intraclass Correlation Coefficients (ICC) and Cohen's Kappa statistic to estimate the test-retest reliability of all selected items within the sample and stratified by gender, age group and country. RESULTS: Both physical activity items (VPA and MVPA) and most of the sedentary behaviour items showed moderate agreement (ICC 0.41-0.60) and a similarly moderate correlation (Cohen's Kappa 0.3-0.5) after dichotomization. CONCLUSIONS: The physical activity and sedentary behaviour items of the HBSC questionnaire seem to be at the borderline of reliability to be used in adolescents.

• MeSH
• chování dětí MeSH
• chování mladistvých MeSH
• cvičení * MeSH
• dítě MeSH
• interpretace statistických dat MeSH
• interval spolehlivosti MeSH
• lidé MeSH
• mladiství MeSH
• průzkumy a dotazníky normy   MeSH
• reprodukovatelnost výsledků MeSH
• sedavý životní styl * MeSH
• sexuální faktory MeSH
• věkové faktory MeSH
• zdravé chování * MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• srovnávací studie MeSH
• validační studie MeSH
• Geografické názvy
• Česká republika MeSH
• Polsko MeSH
• Slovenská republika MeSH

The levels of physical activity (PA) and sedentary behaviour are significant indicators of health behaviour and their monitoring is crucial in developing public policy in the area of health promotion and non-communicable disease prevention. The aim of the study was to describe the prevalence of PA and sedentary behaviour as well as age and gender differences in Czech adults (18-90 years old, N = 1753; 48.4% male) participating in the Global Physical Activity Questionnaire (GPAQ) cross-sectional study 2011. To assess the significant differences between self-reported PA and sedentary behaviour the MANOVA, a post hoc Fischer's least significant difference (LSD) test and logistic regression were used. The level of PA was classified according to the amount of MET-minutes per week as high, moderate or low. Irrespective of age and gender, 32.3% of adults reported a low level of PA; 21.3% of adults fell within the category of moderate level of PA and 46.4% of adults reported a high level of PA. The level of PA decreases with age; men are generally more physically active than women. More than 60% of adults across all age categories are assessed as 'sedentary'. The highest rate of sedentary behaviour was observed in adults over 65 years of age. The development of national strategies for PA promotion together with the development and verification of specific intervention programmes, especially for women, should be a priority in the Czech Republic.

• MeSH
• cvičení * MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• logistické modely MeSH
• mladiství MeSH
• mladý dospělý MeSH
• pohybová aktivita * MeSH
• prevalence MeSH
• průřezové studie MeSH
• průzkumy a dotazníky MeSH
• sedavý životní styl * MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• sexuální faktory MeSH
• věkové rozložení MeSH
• zdravé chování * MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Česká republika epidemiologie   MeSH