S06-5 The Walking In ScHools (WISH) study: Development and evaluation of a peer-led school-based walking intervention in adolescent girls from pilot to fully-powered trial

Abstract Background Walking interventions, delivered within the school setting, have the potential to increase physical activity (PA) in adolescents. Previous research has shown that walking is an acceptable form of PA for adolescent girls, and that walking interventions may be effective at increasing PA in this group. Findings from the Walking In ScHools (WISH) pilot study (n199 female participants) found the intervention was effective in increasing light intensity PA in adolescent girls, but further research is needed to examine the effects of walking on overall PA and the role of peer leaders in delivering school-based interventions. The present study aims to build upon this pilot work and evaluate the effectiveness of a novel, low-cost, peer-led school-based walking intervention, delivered across the school year, at increasing accelerometer-measured PA levels of adolescent girls. Methods The WISH study is a school-based cluster randomised controlled trial targeting adolescent girls (aged 12-14 years) within the post-primary school setting. Data will be collected at four timepoints, baseline, mid-intervention, post-intervention, and 13 months post-baseline. Following baseline data collection, schools were randomly allocated to intervention (n = 9) or control (n = 9). In intervention schools, older pupils (aged 15-18 years) were trained as walk leaders and led the younger girls in 10-15min walks before school, at break, and during lunch, across the school year (20-22 weeks). The primary outcome measure is accelerometer-measured total PA (post-intervention) and secondary outcomes include anthropometry measures, and wellbeing. Results Some 590 participants (mean(SD) age 12.6(0.64)years) were recruited from 18 schools across Northern Ireland (n = 9) and the Border region of the Republic of Ireland (n9). Within the intervention schools, 149 walk leaders were trained. At baseline (n = 535), mean(SD) time spent in moderate to vigorous PA (MVPA) was 39.2(17.07)mins/day and 66 (12%) girls achieved PA guidelines of 60 minutes MVPA per day. Data collection and analysis is ongoing. Conclusions This research has outlined the development of a novel, peer-led walking intervention and demonstrated its effectiveness at increasing light intensity PA in adolescent girls. The ongoing fully powered trial will build upon this pilot work and further evaluate the effects of the WISH study on increasing PA in adolescent girls.


Background
According to the Elaborated Environmental Stress Hypothesis, anxiety and depression in children are associated with poor motor competence, and these associations may be mediated by social support and self-perceptions. Improving children's motor competence through school-based physical activity interventions may therefore be a mechanism for promoting positive mental health through psychosocial factors. Coproduction provides opportunities to participate in intervention development processes, thereby ensuring that specific needs of stakeholders are targeted. The shared stakeholder ownership of the process provides a context-sensitive basis for acceptable interventions with increased likelihood of them being effectively implemented and resulting in positive outcomes. This presentation describes phase 1 of the Move Well, Feel Good study, which aimed to co-produce and evaluate the feasibility of a primary school physical activity intervention to improve children's motor competence and mental health. Methods Five primary schools were recruited from a low socioeconomic status community in northwest England. From these schools, stakeholder groups were formed consisting of class teachers, school leaders, physical activity specialists, and children (aged 8-9 years). Stakeholders worked in single and multiple stakeholder groups through a 6-stage process aligned to the Double Diamond Design Approach by employing divergent and convergent thinking processes to discover, define, develop, and deliver a solution to the 'problems' of how best to improve children's motor competence and mental health, and how best to facilitate real-world school context implementation of the intervention. Through this process the child and adult stakeholders worked separately in workshops and engaged in additional learning and consensus activities. The adult stakeholder co-production workshops were informed by the children's views and current research evidence. Multiplestakeholder groups worked collaboratively to develop intervention ideas, which were presented, critiqued, and refined in alignment with the TIDieR checklist.

Results
In the final stage of the process the research team presented the final co-produced interventions back to the stakeholders and a consensus vote was taken to decide which intervention would be implemented in the phase 2 feasibility trial in September 2022.

Conclusions
School stakeholders' participation in intervention co-production ensures their ownership of the finalised programme, which may be important for subsequent implementation and Abstract citation ID: ckac093.032 S06-5 The Walking In ScHools (WISH) study: Development and evaluation of a peer-led schoolbased walking intervention in adolescent girls from pilot to fully-powered trial

Background
Walking interventions, delivered within the school setting, have the potential to increase physical activity (PA) in adolescents. Previous research has shown that walking is an acceptable form of PA for adolescent girls, and that walking interventions may be effective at increasing PA in this group. Findings from the Walking In ScHools (WISH) pilot study (n199 female participants) found the intervention was effective in increasing light intensity PA in adolescent girls, but further research is needed to examine the effects of walking on overall PA and the role of peer leaders in delivering school-based interventions. The present study aims to build upon this pilot work and evaluate the effectiveness of a novel, low-cost, peer-led school-based walking intervention, delivered across the school year, at increasing accelerometer-measured PA levels of adolescent girls.

Methods
The WISH study is a school-based cluster randomised controlled trial targeting adolescent girls (aged 12-14 years) within the post-primary school setting. Data will be collected at four timepoints, baseline, mid-intervention, post-intervention, and 13 months post-baseline. Following baseline data collection, schools were randomly allocated to intervention (n = 9) or control (n = 9). In intervention schools, older pupils (aged 15-18 years) were trained as walk leaders and led the younger girls in 10-15min walks before school, at break, and during lunch, across the school year (20-22 weeks). The primary outcome measure is accelerometer-measured total PA (post-intervention) and secondary outcomes include anthropometry measures, and wellbeing.

Results
Some 590 participants (mean(SD) age 12.6(0.64)years) were recruited from 18 schools across Northern Ireland (n = 9) and the Border region of the Republic of Ireland (n9). Within the intervention schools, 149 walk leaders were trained. At baseline (n = 535), mean(SD) time spent in moderate to vigorous PA (MVPA) was 39.2(17.07)mins/day and 66 (12%) girls achieved PA guidelines of 60 minutes MVPA per day. Data collection and analysis is ongoing. Conclusions This research has outlined the development of a novel, peer-led walking intervention and demonstrated its effectiveness at increasing light intensity PA in adolescent girls. The ongoing fully powered trial will build upon this pilot work and further evaluate the effects of the WISH study on increasing PA in adolescent girls. Keywords: School-based, adolescents, walking, peer, intervention Symposium Abstract citation ID: ckac093.033 S07 How do sports clubs contribute to health? From theory to interventions The symposium presents last findings on health promotion interventions in sports clubs. After a short introduction about the health promoting sports clubs (HPSC), five (France, Sweden, Ireland, Finland and Netherlands) will upon how sports clubs can be health promoting: in from youth perspectives, by increasing physical activity level outcome or enhancing sustainability of interventions, opening the discussion with academic experts. describes an iterative international process, implicating groups (French sport students, French and Swedish experts) create an intervention theory, based on the HPSC Presentation 2 focuses on a cross-sectional study 123 Swedish youth's representation of sports clubs' towards health promotion, identifying social environment, coaches, amount and ambition of practice key factors. Presentation 3 is a longitudinal study among 366 adolescents, followed from age 15 to age 19, questioning the participation to organised sport practice and their orientation (leisure or competitive). Results have shown that by the age of 19, 33% of boys and 43% of girls have dropped out of organised sport, where 45% of boys and 26% of girls continued participation. Adolescents with a competitive goal orientation were more likely to continue participation. Presentation 4 is a longitudinal study among 131 youth measuring objective physical activity before and in the middle of a sport season. Principal results showed a significant change across time point, as well as differences between gender (a decrease in moderate to vigorous physical activity during games for boys and an increase for girls). Presentation 5 examined factors that influenced the sustainability of 14 Dutch sporting program aimed at increasing physical activity among inactive people 6.5 How do sports clubs contribute to health? From theory to interventions Abstract citation ID: ckac093.034 S07-1 Does goal orientation relate to changes in sports club participation from adolescence to early adulthood?
Katja Rinta-Antila 1 , Kevin Gavin 2 , Linda Ooms 3 , Sami Kokko 1 1 Faculty of Sport and Health Sciences, University of Jyvä skylä , Jyvaskyla, Finland 2 Sport Department, Athlone Institute of Technology, Athlone, Ireland 3 Mulier Instituut, Utrecht, The Netherlands Corresponding author: sami.p.kokko@jyu.fi Background Sports club participation begins to decrease in adolescence. There is a lack of knowledge, how sports club participation changes from adolescence to early adulthood in Finland, and how goal orientation influences on it. Therefore, the aim of this study is to examine if goal orientation is associated to changes in sports club participation during afore mentioned critical years.

Methods
The study design is longitudinal. A sample of 366 (140 boys, 226 girls) adolescents were followed from age 15 (year 2014) to age 19 (year 2018). Sports club participation (yes/no) and goal orientation (no competitive goal, sports for hobby or physical development/regional, national or international success in adolescence/national, international or professional success in adulthood) were measured using questionnaires. In order to study changes in sports club participation, and goal orientation, descriptive statistics were performed. Gender differences were estimated using Chi-squared tests. A binary logistic regression analysis was carried out to examine the association between sports club participation, goal orientation and gender.

Results
By the age 19, 33% of boys and 43% of girls had dropped out from sports club, 45% of boys and 26% of girls had continued participation, and 21% of boys and 31% of girls never participated (p > 0.01). More boys (57%) than girls (31%) had a success in adulthood as a goal, and more girls (48%) than boys (27%) had a success in adolescence as a goal (p > 0.001). Adolescents with success in adulthood as a goal continued participation in sports club more likely than adolescents without competitive goal (OR = 4.81; 95% CI 2.26-10.23). Furthermore, boys were more likely to continue participation than girls (OR = 1.75; 95% CI 1.02-3.01).