P03-04 Perceived and objective indicators of neighbourhood safety and physical activity in early adolescence: a national cohort study

Abstract Background The health benefits of regular physical activity in adolescence are well-documented. Currently, young people in the UK are not achieving recommended levels of physical activity. The neighbourhood environment is a key setting for physical activity in adolescence. Due to lack of financial independence and mobility restrictions, adolescents spend a significant amount of time in their neighbourhood. Feeling unsafe in their neighbourhood may be a potential barrier to physical activity. This study aims to examine associations between objective and subjective measures of neighbourhood safety and physical activity. Methods Participants (n = 11,726) came from the Millennium Cohort Study; a nationally representative UK longitudinal birth cohort. At age 11 perceived neighbourhood safety was assessed via questionnaire and the Index of Multiple Deprivation (IMD) crime domain was linked to participant postcode data. At age 14, participants self-reported physical activity and a subsample (n = 4,813) also wore GENEActiv wrist-worn activity monitors for one weekday and one weekend day. Associations between perceived safety, IMD crime and self-reported physical activity were quantified using linear regression models. Zero Inflated Poisson (ZIP) models were used to examine associations with accelerometer-measured physical activity. We adjusted for parental education, family income, ethnicity and season of accelerometer wear. An interaction term for sex was tested to assess whether associations between perceived safety and physical activity differed by sex. Models were also stratified by sex. Results Feeling not safe compared to very safe was associated with 0.28 (95% CI -0.50, -0.06) fewer days of self-reported physical activity. However, no association was seen between perceived safety and accelerometer physical activity. Those living in the highest IMD crime areas reported on average 0.31 (95% CI -0.47, -0.15) fewer days of physical activity compared to those living in the lowest crime areas. Individuals living in the highest IMD crime areas achieved 5.56 fewer minutes of daily accelerometer-measured exercise than those in least crime areas. Conclusions This study demonstrates consistent associations between perceived safety and objective crime with physical activity levels in adolescence.

not reach the minimum daily time expected of physical activity. Parents and educators of preschoolers are fundamental to the development of activities that involve movement. This study aimed to examine the relationship between the weekly time that Chilean preschoolers include physical activity in their plays and children's development. Also, compare child development between preschoolers who engaged in physical activity play with or without caregivers' presence.

Methods
The sample consisted of 54 preschoolers aged 34.7-65.9 months (mean 52.0AE10.2). The parents completed: a) Ages and Stages Questionnaire Third Edition to measure communication, motor, solving-problem, and personal-social development, and Ages and Stages Questionnaire Socioemotional to measure the socio-emotional development of children and their areas (self-regulation, compliance, autonomy, adaptive functioning (physiological needs), affection, social communication, and interaction; b) an ad-hoc questionnaire to register the time that children dedicate weekly to physical activity on their play, and if their children engaged in play that included physical activity with their caregivers or not.

Results
Pearson coefficient showed that preschoolers' time spent weekly on plays that included physical activity was moderate and significant (p > 0.05) when related to social communication's, adaptive-functioning's, personal-social's, and communication's development. T Student for independent samples revealed that Self-regulation (t=-2.09; p > 0.05) and adaptivefunctioning's development (t=-2.99; p > 0.01) were better in preschoolers engaged in play that included physical activity with their caregivers than those who did not play with them. A multivariate regression analysis indicated that preschoolers' adaptive-functioning could be predicted by a combination of higher time dedicated weekly to physical activity on their play and children playing with their caregivers.

Conclusions
These findings suggest that physical activity in preschoolers could benefit their physiological needs. Thus, it is necessary to promote strategies that include the family and increase Abstract citation ID: ckac095.039 P03-03 The impact of regular physical education, physical activity and sport provision in second level schools on adolescent physical activity behaviours: A systematic literature review Background Regular engagement in physical activity (PA) is cited as a powerful predicter of future health among adolescents. International guidelines recommend sixty-minutes of moderate-to-vigorous-intensity PA daily for adolescents. Prevalence of physical inactivity is high among adolescents and is regarded as a leading risk factor for death worldwide, contributing to the onset of non-communicable diseases with just 20% of adolescents meeting the recommended PA guidelines. Physical inactivity cost $67.5 billion worldwide in 2013 and is estimated to reach over? 110 billion in 2030. Physical Education (PE) is recognized as playing an integral role in the promotion of PA and health. Despite the worldwide adoption of school PE, PA and sport policies to promote PA and health, paralleled with significant investment, a gap in the literature exists that synthesises the impact of school PE, PA and sport on adolescent PA behaviours

Methods
Web of Science, SPORTDiscus, PsychINFO, ERIC and MEDLINE were searched for articles that examined the impact of regular school PE, PA and sport provision on adolescent (12-18 years) published between 2000-2020.

Results
Preliminary results indicate n = 39 articles have met the inclusion criteria. Gender differences are observed on the impact of PE on daily Moderate to Vigorous Physical Activity (MVPA) and overall daily PA. Studies that examined the impact of PE, PA and sport on adolescent PA behaviours outside of school are less frequent indicating a paucity of evidence in this research area. Conclusion Such research is essential to synthesise a deeper understanding on whether current provision is impactful and/or requiring modification and thus will provide comprehensive evidence for 1) sustained financial investment; 2) modification of existing provision to potentiate positive impact and 3) reducing the international cost of physical inactivity. The central current Abstract citation ID: ckac095.040 P03-04 Perceived and objective indicators of neighbourhood safety and physical activity in early adolescence: a national cohort study

Background
The health benefits of regular physical activity in adolescence are well-documented. Currently, young people in the UK are not achieving recommended levels of physical activity. The neighbourhood environment is a key setting for physical activity in adolescence. Due to lack of financial independence and mobility restrictions, adolescents spend a significant amount of time in their neighbourhood. Feeling unsafe in their neighbourhood may be a potential barrier to physical activity. This study aims to examine associations between objective and subjective measures of neighbourhood safety and physical activity. Methods Participants (n = 11,726) came from the Millennium Cohort Study; a nationally representative UK longitudinal birth cohort. At age 11 perceived neighbourhood safety was assessed via questionnaire and the Index of Multiple Deprivation (IMD) crime domain was linked to participant postcode data. At age 14, participants self-reported physical activity and a subsample (n = 4,813) also wore GENEActiv wrist-worn activity monitors for one weekday and one weekend day. Associations between perceived safety, IMD crime and selfreported physical activity were quantified using linear regression models. Zero Inflated Poisson (ZIP) models were used to examine associations with accelerometer-measured physical activity. We adjusted for parental education, family income, ethnicity and season of accelerometer wear. An interaction term for sex was tested to assess whether associations between perceived safety and physical activity differed by sex. Models were also stratified by sex.

Results
Feeling not safe compared to very safe was associated with 0.28 (95% CI -0.50, -0.06) fewer days of self-reported physical activity. However, no association was seen between perceived safety and accelerometer physical activity. Those living in the highest IMD crime areas reported on average 0.31 (95% CI -0.47, -0.15) fewer days of physical activity compared to those living in the lowest crime areas. Individuals living in the highest IMD crime areas achieved 5.56 fewer minutes of daily accelerometer-measured exercise than those in least crime areas.

Conclusions
This study demonstrates consistent associations between perceived safety and objective crime with physical activity levels in adolescence.

Background
There is strong evidence of physical inactivity's link to global disease and economic burden. Physical inactivity among Indian children and youth has particular consequences for the global economy, as youth in India make up a substantial proportion of the world's workforce. As part of the 60-country Active Healthy Kids Alliance Global Matrix 4.0 initiative, a systematic scoping review was conducted to appraise the current state of evidence of active living among children and youth in India. Methods A systematic search of peer-reviewed and grey literature published over the last decade was conducted for 11 indicators of active living: overall physical activity, organized sport participation, active play, active transportation, sedentary behavior, family and peers, school programs and policies, community and built environment, government strategies, physical fitness, and yoga. Data sources included national, state (i.e., province) and city-level surveys, as well as primary data from ongoing longitudinal studies. Relevant grey literature, including government reports and school board policies, were also reviewed.

Results
Physical activity levels vary widely across India, with children and youth in rural settings accumulating greater moderate-tovigorous activity and lower screen time compared to their urban counterparts. The majority of Indian children and youth

Background
Children and adolescents' engagement in physical activity has decreased in most Western countries across the previous three decades. Therefore, increasing number of researchers are investigating antecedents of physical activity engagement in childhood and adolescence. This longitudinal study investigated if cardiorespiratory fitness measured at Grade 5 explained objectively measured moderate-to-vigorous physical activity (MVPA) at grade 7.

Methods
The sample of the study included 169 (62 boys and 107 girls, Mage = 11.27, SD = .32 at the beginning of the study) Finnish PE students. Cardiorespiratory fitness was measured by 20 meters shuttle run test and MVPA by Actigraph wGT3X+ accelerometers. Sex, BMI and MVPA score at Grade 5 were used as covariates in the analysis. Hierarchical multiple regression analysis was conducted as follows: (a) sex, BMI and MVPA score at Grade 5 were set as covariates on the first step of the analysis; (b) cardiorespiratory fitness measured at Grade 5 was set as independent variable on the second step of the analysis; c) MVPA measured at Grade 7 was set as dependent variable on the third step of the analysis.

Conclusions
Results of this study demonstrated that cardiorespiratory fitness is an important antecedent of MVPA from childhood to adolescence. However, the portion cardiorespiratory fitness MICT; n = 27); or no training (CT; n = 24). A two-way analysis