Increasing adolescents' physical activity levels through a comprehensive school-based physical activity program: study protocol of the cluster randomized controlled trial Active School.

BACKGROUND: The positive effects of regular physical activity on children and adolescents' physical and mental health are well-established. Despite these health benefits, most Swiss adolescents do not meet WHO's recommended level of physical activity, which includes a daily minimum of 60 min of moderate-to-vigorous physical activity. Due to their inclusivity, schools are identified as a key setting to promote physical activity. Recently, the comprehensive school physical activity program (CSPAP), in which teachers as physical activity leaders (PALs) play a crucial role to advance comprehensive school-based physical activity promotion, has been discussed. However, such comprehensive approaches are still lacking in Switzerland, and specific PAL trainings do not exist. Therefore, the aim of this study is to implement and evaluate Active School, a comprehensive school-based physical activity program for Swiss secondary schools with integrated PAL training. METHODS/DESIGN: A cluster randomized controlled trial (RCT) involving 12 secondary schools (6 experimental, 6 waiting control schools) will assess baseline data and effectiveness of Active School at 12 and 24 months. Active School includes five components based on the CSPAP. Each school is encouraged to set individual physical activity goals in this regard. This process is guided by the PALs, who will participate in professional development training before and during Active School implementation. As a primary outcome, students' moderate-to-vigorous physical activity will be assessed via accelerometers. As secondary outcomes, inactivity, light physical activity, step counts, aerobic fitness and coordination will be measured, and students' general wellbeing, learning behavior, and multiple psychosocial measures related to physical activity will be assessed by questionnaires. The effectiveness evaluation is accompanied by a process evaluation that focuses on the implementation outcomes of dose of delivery, reach, feasibility, and sustainability. A mixed methods approach, including ripple effect mapping, will be employed to reconstruct and understand the implementation process. DISCUSSION: This study will be the first to implement and evaluate a CSPAP in the Swiss school system. The specific PAL training and the simultaneous application of effectiveness and process evaluation are considered strengths of the study. TRIAL REGISTRATION: German Clinical Trials Register (DRKS00033362). Date of registration: January 25, 2024. Retrospectively registered.

Boost your brain, while having a break! The effects of long-term cognitively engaging physical activity breaks on children's executive functions and academic achievement.

Classroom-based physical activity (PA) is gaining attention in terms of its potential to enhance children's cognitive functions, but it remains unclear as to which specific modality of PA affects cognitive functions most. The aim of the study was to examine the effects of qualitatively different PA breaks on children's cognitive outcomes. Children (N = 142) aged between 7 and 9 years were allocated to a 20-week classroom-based PA program, with either high physical exertion and high cognitive engagement (combo group), high physical exertion and low cognitive engagement (aerobic group), or low physical exertion and high cognitive engagement (cognition group). Executive functions (updating, inhibition, shifting) and academic achievement (mathematics, spelling, reading) were measured pre- and post-intervention. Results showed that the combo group profited the most displaying enhanced shifting and mathematic performance. The cognition group profited only in terms of enhanced mathematic performance, whereas the aerobic group remained unaffected. These results suggest that the inclusion of cognitively engaging PA breaks seem to be a promising way to enhance school children's cognitive functions.

A classroom intervention to improve executive functions in late primary school children: Too 'old' for improvements?

BACKGROUND: Given the strong relationship between executive functions and academic achievement, there has been great interest in improving executive functions. School-based group interventions targeting executive functions revealed encouraging results in preschoolers and young school children; however, there is a paucity of studies in older primary school children (age 10-12). This is surprising considering that deficits in executive function performance can often be observed in this age group. AIMS: Therefore, the aim of this study was to examine whether an innovative customized school-based group intervention could improve core executive functions (updating, inhibition, and shifting) in the age group concerned. SAMPLE: In total, 118 ten- to twelve-year-old school children were recruited from eight participating classes. METHODS: They were randomly assigned to one of two-six-week conditions of either a cognitive games group comprising of card and board games training executive functions (experimental group) or a wait-list control group (regular school lessons). In the cognitive games group, the class teachers held a 30-min training session twice a week. ANCOVAs (using pre-test values as covariate) were used to compare executive function performance between groups. RESULTS: Results revealed that the cognitive games group improved specific executive functions (updating and shifting) compared to the control group. These findings indicate that a school-based group intervention can improve executive functions, even in 'older' primary school children. CONCLUSION: This study provides empirical evidence for the effectiveness of a classroom-based cognitive training in older primary school children and is of practical relevance for educators.

Disentangling the relationship between children's motor ability, executive function and academic achievement.

Even though positive relations between children's motor ability and their academic achievement are frequently reported, the underlying mechanisms are still unclear. Executive function has indeed been proposed, but hardly tested as a potential mediator. The aim of the present study was therefore to examine the mediating role of executive function in the relationship between motor ability and academic achievement, also investigating the individual contribution of specific motor abilities to the hypothesized mediated linkage to academic achievement. At intervals of ten weeks, 236 children aged between 10 and 12 years were tested in terms of their motor ability (t1: cardiovascular endurance, muscular strength, motor coordination), core executive functions (t2: updating, inhibition, shifting), and academic achievement (t3: mathematics, reading, spelling). Structural equation modelling revealed executive function to be a mediator in the relation between motor ability and academic achievement, represented by a significant indirect effect. In separate analyses, each of the three motor abilities were positively related to children's academic achievement. However, only in the case of children's motor coordination, the mediation by executive function accounted for a significance percentage of variance of academic achievement data. The results provide evidence in support of models that conceive executive function as a mechanism explaining the relationship that links children's physical activity-related outcomes to academic achievement and strengthen the advocacy for quality physical activity not merely focused on health-related physical fitness outcomes, but also on motor skill development and learning.

DELAYED POSITIVE EFFECTS OF AN ACUTE BOUT OF COORDINATIVE EXERCISE ON CHILDREN'S ATTENTION (1).

Since attention is an important prerequisite for learning, it is particularly worthwhile to promote it in schools, through specific interventions. The present study examined the effects of an acute bout of coordinative exercise in physical education on the attention of primary school children. A total of 90 fifth grade primary school children (41 boys, 49 girls; M = 11.0 yr., SD = 0.6) participated in the study and were randomly assigned to either the experimental or the control group. The experimental group received a cognitively demanding physical education lesson consisting of different coordinative exercises; the control group attended a normal sedentary school lesson. Before, immediately after, and 90 min. after each experimental condition, the children's attentional performance was tested using the revised version of the d2 Test of Attention (d2-R). Results of the repeated-measures analysis of variance (ANOVA) revealed that children's attentional performance increased through the specifically designed physical education lesson, not immediately but 90 min. after cessation. The results are discussed in terms of mechanisms explaining the relationship between acute physical exercise, and immediate and delayed effects on attention.

Cognitively Engaging Chronic Physical Activity, But Not Aerobic Exercise, Affects Executive Functions in Primary School Children: A Group-Randomized Controlled Trial.

Although the positive effects of different kinds of physical activity (PA) on cognitive functioning have already been demonstrated in a variety of studies, the role of cognitive engagement in promoting children's executive functions is still unclear. The aim of the current study was therefore to investigate the effects of two qualitatively different chronic PA interventions on executive functions in primary school children. Children (N = 181) aged between 10 and 12 years were assigned to either a 6-week physical education program with a high level of physical exertion and high cognitive engagement (team games), a physical education program with high physical exertion but low cognitive engagement (aerobic exercise), or to a physical education program with both low physical exertion and low cognitive engagement (control condition). Executive functions (updating, inhibition, shifting) and aerobic fitness (multistage 20-m shuttle run test) were measured before and after the respective condition. Results revealed that both interventions (team games and aerobic exercise) have a positive impact on children's aerobic fitness (4-5% increase in estimated VO2max). Importantly, an improvement in shifting performance was found only in the team games and not in the aerobic exercise or control condition. Thus, the inclusion of cognitive engagement in PA seems to be the most promising type of chronic intervention to enhance executive functions in children, providing further evidence for the importance of the qualitative aspects of PA.