Evaluation of a community-based intervention to promote physical activity in youth: lessons from Active Winners

Test-Retest Reliability of a Physical Activity Behavior, Health and Wellbeing Questionnaire in Adolescents

Background

The aim of this study was to examine the test-retest reliability of the physical activity behavior, health and wellbeing questionnaire, in adolescent populations, administered by teachers in school settings, in the Republic of Ireland.

Methods

A cross-sectional, mixed sample of 55 participants (45.5% males: Age, 13.94 (±.40) years) were included. The participants completed the questionnaire on two occasions (T1 and T2), on the same day and time, one week apart following identical procedures. Variables for testing included physical activity behavior (n=13), health (n=11) and wellbeing (n=2). Test-retest reliability of the questionnaire's covariates, including family affluence and physical impairments were also examined.

Results

Systematic error (Bland-Altman plots) was found to be near to zero for each of the physical activity behavior, health and wellbeing variables. The combined mean coefficient of variation was lower for females (10.19%) in comparison to males (13.01%). The combined mean intraclass correlation coefficients were higher for females (0.901) than males (0.822). Similarly, the combined mean Cronbach alpha coefficient were higher for girls (0.908) than boys (0.821).

Conclusions

This study found the physical activity behavior, health and wellbeing questionnaire to be reliable for use in adolescent populations.

Cross-Sectional Analysis of Family Factors Associated with Lifestyle Habits in a Sample of Italian Primary School Children: The I-MOVE Project

The acquisition of healthy dietary and exercise habits during childhood is essential for maintaining these behaviors during adulthood. In early childhood, parents have a profound influence on a child's lifestyle pursuits, serving as both role models and decision-makers. The present study examines family factors as potential contributors to healthy lifestyle habits and their child's overall diet quality among a sample of primary school children. A secondary aim is to evaluate several aspects of diet quality using the Mediterranean adaptation of the Diet Quality Index-International (DQI-I). This cross-sectional study involved 106 children enrolled in a primary school located in Imola, Italy. Data were collected from October to December 2019 using an interactive tool used to assess parent characteristics, children's lifestyle, food frequency (ZOOM-8 questionnaire), and actigraph accelerometers to capture children's physical activity and sedentary behavior. Adherence to the Mediterranean Diet (expressed by KIDMED Index) was positively associated with fathers' educational level, parental sport participation, and the parent's overall nutritional knowledge. Higher mothers' educational level was inversely associated with children's leisure screen time. Parents' nutritional knowledge was positively related to children's average daily minutes of organized sport activities. The better score for DQI-I was for consumption adequacy, followed by variety and moderation. The lowest score was for overall balance. The present study reinforces the importance of family factors in young children's lifestyle choices, particularly their dietary, leisure time, and exercise habits.

Effects of Sports, Exercise Training, and Physical Activity in Children with Congenital Heart Disease-A Review of the Published Evidence

Children and adolescents with congenital heart disease (CHD) should be encouraged to adopt a physically active lifestyle, ideally by participating in sports activities at school and sports clubs. Children with complex CHD or other risk factors (for example, pacemakers, cardioverter-defibrillators, channelopathies) may, however, need specific individualized training programs. This review article summarizes the current knowledge regarding the clinical effects of sports and exercise training on CHD and its pathophysiologic mechanisms. An evidence-based approach based on a literature search, using PubMed, Medline, CINHAL, Embase, and the Cochrane Library was conducted, last completed on 30 December 2021. In studies with 3256 CHD patients in total, including 10 randomized controlled trials, 14 prospective interventional trials, 9 observational trials, and 2 surveys, exercise training has been shown to improve exercise capacity and physical activity, motoric skills, muscular function, and quality of life. Sports and exercise training appears to be effective and safe in CHD patients. Despite being cost-efficient, training programs are currently scarcely reimbursed; therefore, support from healthcare institutions, commissioners of healthcare, and research-funding institutions is desirable. There is a strong need to establish specialized rehabilitation programs for complex CHD patients to enhance these patients' access to this treatment intervention. Further studies may be desirable to confirm these data to investigate the impact on risk profiles and to identify the most advantageous training methodology and underlying pathophysiological mechanisms.

A Summary of One Research Team's Contributions to Understanding Physical Activity Behavior in Children and Youth

Schools are well-positioned to provide physical activity opportunities to help youth achieve the recommended 60 or more daily minutes of moderate-to-vigorous physical activity. The Children's Physical Activity Research Group (CPARG) at the University of South Carolina has focused on understanding physical activity in school-aged youth for 30+ years. The purpose of this article was to critically review (CPARG) contributions to the field in school settings and school-age youth. We reviewed 127 published CPARG articles from six research projects conducted between 1993-2019. The review was guided by questions in five categories: measurement of physical activity and its determinants, characteristics of physical activity behavior, correlates/determinants of physical activity, physical activity interventions, and race/ethnicity and physical activity. Results were summarized by question and synthesized across categories. CPARG contributions included assessing physical activity levels, patterns, forms, and contexts; identifying and measuring physical activity correlates/determinants; and conducting school-based physical activity interventions. Identifying multiple domains of physical activity determinants enables researchers and practitioners to select/design age-appropriate, valid, and reliable instruments to assess determinants. Focusing on determinants enables them to create effective physical activity interventions, environments, programs, and policies in schools. These efforts must address race/ethnicity differences, ensuring that measurement instruments and intervention strategies are culturally appropriate.

Are There Common Correlates of Adolescents' Sport Participation and Screen Time?

Objective: This study aimed to identify intrapersonal, interpersonal, and environmental correlates of leisure-time participation in sports and examine whether they are also associated with screen-time among adolescents. Methods: Adolescents from eight schools in Victoria, Australia were recruited for this study. Participants (n = 400) comprised of an even distribution of boys (51%) and girls (49%) aged 12-16 years. Their engagement in leisure-time activities (including sports and screen-time) and 13 potential correlates were self-reported. Multinomial logistic regression analyses examined correlates of sports and screen-time participation categories, accounting for clustering by school and adjusting for significant sociodemographic characteristics. Results: The majority (76%) participated in leisure-time sports and exceeded screen-time recommendations (<2 h/day) on both weekdays (69%) and weekend days (85%). Greater internal motivation for sports was positively associated with sports participation and inversely associated with screen-time on weekend days, respectively. Fewer barriers, positive family and coach support and more neighborhood sporting opportunities were significantly associated with greater sports participation. Neighborhood social norms were inversely associated with sports participation. Preference for sports was associated with less weekday and weekend screen-time. Friend support for sports was inversely associated with weekday screen-time. Access to sports facilities in the local neighborhood was associated with more weekday and weekend screen-time. Conclusion: Internal motivation for sports was associated with both sports participation and less screen-time. Preference for leisure-time sports and friend support for sports were associated with less screen-time. Future research should continue to explore common correlates of multiple leisure-time behaviors to inform the development of effective intervention strategies.

A scoping review of whole-of-community interventions on six modifiable cancer prevention risk factors in youth: A systems typology

Whole-of-community interventions delivered across entire geospatial areas show promise for improving population health for youth cancer prevention. The aims of this scoping review were to synthesize the whole-of-community intervention literature on six modifiable risk factors in youth for cancer prevention (alcohol use, diet, obesity, physical activity, sun exposure, tobacco use) and to develop and apply a typology describing the inclusion of fundamental control system functional characteristics. A systematic search was conducted in PubMed, Cumulative Index to Nursing and Allied Health Literature, Embase, PsycINFO, and Scopus for studies published to the end of 2019. Eligible studies included a geospatially defined whole-of-community intervention; youth 0-18 years; and at least one of the six cancer risk factor outcomes. An iterative process was undertaken to create a typology describing the functions for whole-of-community interventions guided by systems theory, and the typology was used to code the included interventions. A total of 41 interventions were included. Most interventions (43.9%) assessed multiple cancer risk factors. Few interventions provided fundamental functions necessary for community system coordination: sensor, controller, effector. Although communities are a patchwork quilt of microsystems where individuals interact in geographically bounded places nested within larger whole systems of influence, a control systems approach has not been used to frame the literature. Whole-of-community interventions can be characterized by the fundamental system functions necessary for coordinating population health improvement. Future whole-of-community intervention efforts should draw on fundamental knowledge of how systems operate and test whether adoption of the key functions is necessary for whole-of-community population health improvement.

Evaluating the Impact of the Healthy Kids Community Challenge (HKCC) on Physical Activity of Older Youth

(1) Background: The Healthy Kids Community Challenge (HKCC) was a community-based obesity prevention intervention funded by the Government of Ontario (Canada). (2) Methods: A quasi-experimental design was used to examine the impact of the HKCC on physical activity (PA) outcomes using both repeat cross-sectional (T1 2014-2015, n = 31,548; T2 2015-2016, n = 31,457; and T3 2016-2017, n = 30,454) and longitudinal data (n = 3906) from the COMPASS study. Grade 9-12 students in HKCC communities were placed into one of three intervention groups [T2 data collection post-HKCC finishing (IG1), T2 data collection during HKCC (IG2), and T2 data collection pre-HKCC starting (IG3)], Ontario students in non-HKCC communities were Control Group 1 (CG1) and Alberta students were Control Group 2 (CG2). (3) Results: Repeat cross-sectional results show over time the HKCC had no significant impact on PA outcomes in any of the intervention groups. Longitudinal results show a significant decrease in time spent in moderate-to-vigorous PA (IG2: -3.15 min/day) between T1 and T3 in IG2. (4) Conclusions: These results suggest the HKCC did not have an impact on improving PA outcomes among older youth in HKCC communities. Moving forward, there is a need to provide effective and sustainable interventions to promote PA among older youth.

Formative Process Evaluation of the "Connect" Physical Activity Feasibility Trial for Adolescents

Most interventions do not reach full implementation in real-world settings. Due to this issue, formative process evaluation during pilot programs can be especially useful to understand implementation strengths and areas for improvement so that full implementation can be reached in future iterations. This study demonstrated how a formative process evaluation of the Connect through Positive Leisure Activities for Youth (Connect) pilot informed course corrections for year 2 implementation. Connect is an intervention to promote a positive social motivational climate for physical activity (PA) in pre-existing after school programs. Connect ran 3 days a week for 8 weeks and had 2 components: a 30-minute “Get-to-Know-You” (GTKY) session and a 60-minute PA session. Formative evaluation was assessed using an observational tool and staff surveys. Changes in youth PA during program hours was assessed as a process outcome using the System for Observing Children’s Activity and Relationships during Play (SOCARP). All Connect essential elements were assessed with the observational tool including (a) social goal-oriented support; (b) collaborative, cooperative play; (c) equal treatment/access; and (d) an inclusive and engaging climate. Adequate dose was achieved on all items in all sessions. Although GTKY and PA sessions both reached high fidelity in promoting equal treatment and access, success in reaching fidelity varied for the 3 remaining essential elements. Post-intervention staff surveys indicated acceptability/adoptability of the Connect program and SOCARP observations indicated significant increases in PA from baseline to post-intervention. Changes for year 2 implementation based on the findings are discussed.

A revised teaching assistant-led extracurricular physical activity programme for 8- to 10-year-olds: the Action 3:30R feasibility cluster RCT

Background

Many children do not meet the recommended guidelines for physical activity. The after-school period may be a critical time for children to participate in physical activity. Teaching assistants are important within the school system and could be trained to deliver after-school physical activity programmes. Our previous work showed that a teaching assistant-led after-school physical activity intervention held promise.

Objectives

To examine the feasibility, evidence of promise and cost of Action 3:30R, a revised after-school physical activity intervention.

Design

A cluster-randomised feasibility study, including process and economic evaluations.

Setting

The setting was 12 primary schools in south-west England.

Participants

The participants were Year 4 and 5 children (aged 8–10 years).

Intervention

Two teaching assistants from each intervention school attended a 25-hour (5-day) training course focused on how to deliver an after-school physical activity programme. As Action 3:30 is grounded in self-determination theory, the training focused on promoting children’s autonomy, belonging and competence. Teaching assistants received resources to aid them in delivering a 60-minute after-school physical activity programme twice per week for 15 weeks (i.e. 30 sessions).

Main outcome measures

Measures focused on feasibility outcomes and evidence of promise. Feasibility measures included the recruitment of schools and pupils and the attendance at the after-school programme. Evidence of promise was measured by comparing accelerometer-determined minutes of moderate to vigorous physical activity between the arms at follow-up. Process evaluation measures were conducted using the RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance) framework. The cost of delivery was also assessed.

Results

Twelve primary schools were recruited and 41% of eligible pupils consented, 49% of whom were girls. Schools were randomised after baseline measures: six to the intervention arm (n = 170 pupils) and six to the control arm (n = 165 pupils). Two schools allocated to the intervention arm withdrew from the study before the start of the intervention, leaving 111 pupils in the intervention arm. The intervention training was well attended and positively received; eight out of nine teaching assistants attended 100% of the sessions. Action 3:30R clubs were well attended; 74% of pupils attended at least 50% of the 30 sessions. Mean weekday moderate to vigorous physical activity did not differ between the arms at follow-up (–0.5 minutes, 95% confidence interval –4.57 to 3.57 minutes). The process evaluation revealed that Action 3:30R was received positively by pupils, teaching assistants and key contacts in intervention schools. Pupils enjoyed Action 3:30R, and teaching assistants and pupils perceived the teaching style to be autonomy-supportive. Economic evaluation showed that Action 3:30R is inexpensive; the estimated cost of the programme after 1 year was £1.64 per pupil per session.

Limitations

A reason for withdrawing was given by one school but not by the other. The reason given was an inability to release staff for training.

Conclusions

Action 3:30R is a low-cost, feasible after-school programme that engages a range of pupils and offers continuing professional development to teaching assistants. However, Action 3:30R does not show evidence of promise in increasing levels of moderate to vigorous physical activity and does not warrant a trial evaluation.

Future work

Future research should focus on improving the quality of current after-school provision in primary schools to increase physical activity.

Trial registration

Current Controlled Trials ISRCTN34001941.

Funding

This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 7, No. 19. See the NIHR Journals Library website for further project information.

Examining How Neighborhood Socioeconomic Status, Geographic Accessibility, and Informational Accessibility Influence the Uptake of a Free Population-Level Physical Activity Intervention for Children

PURPOSE

To evaluate the uptake of ACT-i-Pass (G5AP), a physical activity (PA) intervention that provides free access to PA opportunities, and to understand the extent to which the intervention provides equitable access to children.

DESIGN

This study evaluates the differences in uptake (ie, enrollment) by comparing postal codes of registrants with the postal codes of all eligible children.

SETTING

Children were provided the opportunity to register for the G5AP during the 2014 to 2015 school year in London, Canada.

PARTICIPANTS

The population of grade 5 students in London who registered for the G5AP (n = 1484) and did not register (n = 1589).

INTERVENTION

The G5AP offered grade 5 students free access to select PA facilities/programs during 2014 to 2015 school year.

MEASURES

Measures included G5AP registration status, method of recruitment, distance between home and the nearest facility, and neighborhood socioeconomic status.

ANALYSIS

Getis-Ord Gi* and multilevel logistic regression were used to analyze these data.

RESULTS

There were significant differences in the uptake of the G5AP: residing in neighborhoods of high income (odds ratio [OR] = 1.062, P = .029) and high proportion of recent immigrants (OR = 1.036, P = .001) increased the likelihood of G5AP registration. Children who were recruited actively were significantly more likely to register for the G5AP (OR = 2.444, P < .001).

CONCLUSION

To increase the uptake of a PA intervention, children need to be actively recruited. Interactive presentations provide children with increased access to information about both the program and its nuances that cannot be communicated as effectively through passive methods.

Cost-effectiveness of Community-Based Minigrants to Increase Physical Activity in Youth

CONTEXT

American youth are insufficiently active, and minigrant programs have been developed to facilitate implementation of evidence-based interventions in communities. However, little is known about the cost-effectiveness of targeted minigrant programs for the implementation of physical activity (PA) promoting strategies for youth.

OBJECTIVE

To determine the cost-effectiveness of a minigrant program to increase PA among youth.

DESIGN

Twenty community grantees were pair-matched and randomized to receive funding at the beginning of year 1 (2010-2011) or year 2 (2011-2012) to implement interventions to increase PA in youth. Costs were calculated by examining financial reports provided by the granting organization and grantees.

SETTING

Twenty counties in North Carolina.

PARTICIPANTS

A random sample of approximately 800 fourth- to eighth-grade youth (per year) from the approximately 6100 youth served by the 20 community-based interventions.

MAIN OUTCOME MEASURE

Cost-effectiveness ratios (CERs) were calculated at the county and project levels to determine the cost per child-minute of moderate-to-vigorous PA (MVPA) increased by wave. Analyses were conducted utilizing cost data from 20 community grantees and accelerometer-derived PA from the participating youth.

RESULTS

Of the 20 participating counties, 18 counties displayed increased youth MVPA between at least 2 waves of observation. Of those 18 counties, the CER (US dollars/MVPA minutes per day) ranged from $0.02 to $1.86 (n = 13) in intervention year 1, $0.02 to $6.19 (n = 15) in intervention year 2, and $0.02 to $0.58 (n = 17) across both years.

CONCLUSION

If utilized to implement effectual behavior change strategies, minigrants can be a cost-effective means of increasing children's MVPA, with a low monetary cost per minute of MVPA.

State of the Art Reviews: Measurement of Physical Activity in Children and Adolescents

To date, a wide range of methods has been used to measure physical activity in children and adolescents. These include self-report methods such as questionnaires, activity logs, and diaries as well as objective measures of physical activity such as direct observation, doubly labeled water, heart rate monitoring, accelerometers, and pedometers. The purpose of this review is to overview the methods currently being used to measure physical activity in children and adolescents. For each measurement approach, new developments and/or innovations are identified and discussed. Particular attention is given to the use of accelerometers and the calibration of accelerometer output to units of energy expenditure to developing children.

Unravelling the factors decisive to the implementation of EPODE-derived community approaches targeting childhood obesity: a longitudinal, multiple case study

Background

Implementation of intersectoral community approaches often fails due to a translational gap between the approach as intended and the approach as implemented in practice. Knowledge about the implementation determinants of such approaches is needed to facilitate future implementation processes.

Methods

The implementation of five EPODE-derived intersectoral community approaches was studied longitudinally. Semi-structured interviews were held with 189 community stakeholders from four sectors to elucidate which determinants influenced implementation, and if an to which extent determinants differed across communities, sectors and over time. A framework approach was used to analyze our data.

Results

Twenty-two key determinants of implementation were identified. Facilitators named were mostly proximal (stakeholder level), and barriers were mostly distal (context level). Key determinants varied greatly across sectors and over time, especially between the educational & health care sector and the private, welfare & sports sector. Only ‘perceived importance of IACO goals’ was identified as an universal implementation facilitator.

Conclusions

Striking differences in determinants were found across sectors and over time. Also, stakeholders expressed that possibilities to adapt the approach to the local context were needed to improve implementation. We therefore propose to develop sector- and time specific leads for implementation, which should be approved and amended (over time) by stakeholders. This so-called ‘mutual adaptation’ allows for the use of both scientific insights and practice-based knowledge, enabling program management and community stakeholders to collaboratively improve their implementation efforts.

An Experimental Evaluation of a School-Based Emancipatory Intervention to Promote African American Well-Being and Youth Leadership

This study experimentally examined the effect of a school-based emancipatory intervention on the psychological and behavioral well-being of African American adolescents. Sixty-five eighth graders in an inner-city, predominantly Black school were randomly assigned to either receive the experimental intervention or a regular Life Skills course (the control condition). The class met three times a week for one semester. Growth trajectory modeling was used to test the extent to which the intervention affected students’ communal worldviews, individualism, school connectedness, motivation to achieve, and social change activities over time. Results indicated that the intervention positively affected each of these variables. Increased communalism and increased school connectedness mediated the relationship between the intervention and students’ motivation to achieve. Competitive individualistic orientation was a partial mediator for motivation to achieve. Implications for practice, policy, and research are discussed.

Effects of a Web-Based Computer-Tailored Game to Reduce Binge Drinking Among Dutch Adolescents: A Cluster Randomized Controlled Trial

Background

Binge drinking among Dutch adolescents is among the highest in Europe. Few interventions so far have focused on adolescents aged 15 to 19 years. Because binge drinking increases significantly during those years, it is important to develop binge drinking prevention programs for this group. Web-based computer-tailored interventions can be an effective tool for reducing this behavior in adolescents. Embedding the computer-tailored intervention in a serious game may make it more attractive to adolescents.

Objective

The aim was to assess whether a Web-based computer-tailored intervention is effective in reducing binge drinking in Dutch adolescents aged 15 to 19 years. Secondary outcomes were reduction in excessive drinking and overall consumption during the previous week. Personal characteristics associated with program adherence were also investigated.

Methods

A cluster randomized controlled trial was conducted among 34 Dutch schools. Each school was randomized into either an experimental (n=1622) or a control (n=1027) condition. Baseline assessment took place in January and February 2014. At baseline, demographic variables and alcohol use were assessed. Follow-up assessment of alcohol use took place 4 months later (May and June 2014). After the baseline assessment, participants in the experimental condition started with the intervention consisting of a game about alcohol in which computer-tailored feedback regarding motivational characteristics was embedded. Participants in the control condition only received the baseline questionnaire. Both groups received the 4-month follow-up questionnaire. Effects of the intervention were assessed using logistic regression mixed models analyses for binge and excessive drinking and linear regression mixed models analyses for weekly consumption. Factors associated with intervention adherence in the experimental condition were explored by means of a linear regression model.

Results

In total, 2649 adolescents participated in the baseline assessment. At follow-up, 824 (31.11%) adolescents returned. The intervention was effective in reducing binge drinking among adolescents aged 15 years (P=.03) and those aged 16 years when they participated in at least 2 intervention sessions (P=.04). Interaction effects between excessive drinking and educational level (P=.08) and between weekly consumption and age (P=.09) were found; however, in-depth analyses revealed no significant subgroup effects for both interaction effects. Additional analyses revealed that prolonged use of the intervention was associated with stronger effects for binge drinking. Yet, overall adherence to the intervention was low. Analyses revealed that being Protestant, female, younger, a nonbinge drinker, and having a higher educational background were associated with adherence.

Conclusions

The intervention was effective for adolescents aged 15 and 16 years concerning binge drinking. Prevention messages may be more effective for those at the start of their drinking career, whereas other methods may be needed for those with a longer history of alcohol consumption. Despite using game elements, intervention completion was low.

Trial Registration

Dutch Trial Register: NTR4048; http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=4048 (Archived by WebCite® at http://www.webcitation.org/6eSJD3FiY)

Physical Activity-Related Policy and Environmental Strategies to Prevent Obesity in Rural Communities: A Systematic Review of the Literature, 2002-2013

INTRODUCTION

Health disparities exist between rural and urban residents; in particular, rural residents have higher rates of chronic diseases and obesity. Evidence supports the effectiveness of policy and environmental strategies to prevent obesity and promote health equity. In 2009, the Centers for Disease Control and Prevention recommended 24 policy and environmental strategies for use by local communities: the Common Community Measures for Obesity Prevention (COCOMO); 12 strategies focus on physical activity. This review was conducted to synthesize evidence on the implementation, relevance, and effectiveness of physical activity-related policy and environmental strategies for obesity prevention in rural communities.

METHODS

A literature search was conducted in PubMed, PsycINFO, Web of Science, CINHAL, and PAIS databases for articles published from 2002 through May 2013 that reported findings from physical activity-related policy or environmental interventions conducted in the United States or Canada. Each article was extracted independently by 2 researchers.

RESULTS

Of 2,002 articles, 30 articles representing 26 distinct studies met inclusion criteria. Schools were the most common setting (n = 18 studies). COCOMO strategies were applied in rural communities in 22 studies; the 2 most common COCOMO strategies were "enhance infrastructure supporting walking" (n = 11) and "increase opportunities for extracurricular physical activity" (n = 9). Most studies (n = 21) applied at least one of 8 non-COCOMO strategies; the most common was increasing physical activity opportunities at school outside of physical education (n = 8). Only 14 studies measured or reported physical activity outcomes (10 studies solely used self-report); 10 reported positive changes.

CONCLUSION

Seven of the 12 COCOMO physical activity-related strategies were successfully implemented in 2 or more studies, suggesting that these 7 strategies are relevant in rural communities and the other 5 might be less applicable in rural communities. Further research using robust study designs and measurement is needed to better ascertain implementation success and effectiveness of COCOMO and non-COCOMO strategies in rural communities.

Evaluation of physical activity interventions in children via the reach, efficacy/effectiveness, adoption, implementation, and maintenance (RE-AIM) framework: A systematic review of randomized and non-randomized trials

CONTEXT

Existing reviews of physical activity (PA) interventions designed to increase PA behavior exclusively in children (ages 5 to 11years) focus primarily on the efficacy (e.g., internal validity) of the interventions without addressing the applicability of the results in terms of generalizability and translatability (e.g., external validity).

OBJECTIVE

This review used the RE-AIM (Reach, Efficacy/Effectiveness, Adoption, Implementation, Maintenance) framework to measure the degree to which randomized and non-randomized PA interventions in children report on internal and external validity factors.

METHODS AND RESULTS

A systematic search for controlled interventions conducted within the past 12years identified 78 studies that met the inclusion criteria. Based on the RE-AIM criteria, most of the studies focused on elements of internal validity (e.g., sample size, intervention location and efficacy/effectiveness) with minimal reporting of external validity indicators (e.g., representativeness of participants, start-up costs, protocol fidelity and sustainability).

CONCLUSIONS

Results of this RE-AIM review emphasize the need for future PA interventions in children to report on real-world challenges and limitations, and to highlight considerations for translating evidence-based results into health promotion practice.

A stitch in time saves nine? A repeated cross-sectional case study on the implementation of the intersectoral community approach Youth At a Healthy Weight

Background

The implementation of programs complex in design, such as the intersectoral community approach Youth At a Healthy Weight (JOGG), often deviates from their application as intended. There is limited knowledge of their implementation processes, making it difficult to formulate sound implementation strategies.

Methods

For two years, we performed a repeated cross-sectional case study on the implementation of a JOGG fruit and water campaign targeting children age 0–12. Semi-structured observations, interviews, field notes and professionals’ logs entries were used to evaluate implementation process. Data was analyzed via a framework approach; within-case and cross-case displays were formulated and key determinants identified. Principles from Qualitative Comparative Analysis (QCA) were used to identify causal configurations of determinants per sector and implementation phase.

Results

Implementation completeness differed, but was highest in the educational and health care sector, and higher for key than additional activities. Determinants and causal configurations of determinants were mostly sector- and implementation phase specific. High campaign ownership and possibilities for campaign adaptation were most frequently mentioned as facilitators. A lack of reinforcement strategies, low priority for campaign use and incompatibility of own goals with campaign goals were most often indicated as barriers.

Discussion

We advise multiple ‘stitches in time’; tailoring implementation strategies to specific implementation phases and sectors using both the results from this study and a mutual adaptation strategy in which professionals are involved in the development of implementation strategies.

Conclusion

The results of this study show that the implementation process of IACOs is complex and sustainable implementation is difficult to achieve. Moreover, this study reveals that the implementation process is influenced by predominantly sector and implementation phase specific (causal configurations of) determinants.

Implementation of intersectoral community approaches targeting childhood obesity: a systematic review

The implementation of intersectoral community approaches targeting childhood obesity (IACO) is considered challenging. To help overcome these challenges, an overview of the evidence to date is needed. We searched four databases to identify papers that reported on the determinants of successful implementation of IACOs, resulting in the inclusion of 25 studies. We appraised study quality with the Crowe Critical Appraisal Tool and the Quality Framework; reported implementation outcome indicators were reviewed via narrative synthesis. Quality of included studies varied. The most frequently reported indicators of implementation success were fidelity and coverage. Determinants related to the social-political context and the organization were most often cited as influencing implementation, in particular, 'collaboration between community partners', 'the availability of (human) resources' and 'time available for implementation'. The association between determinants and implementation variability was never explicated. We conclude that although some insights into the effective implementation of IACOs are present, more research is needed. Emphasis should be placed on elucidating the relationship between determinants and implementation success. Research should further focus on developing a 'golden standard' for evaluating and reporting on implementation research. These actions will improve the comparison of study outcomes and may constitute the cumulative development of knowledge about the conditions for designing evidence-based implementation strategies.

Modelling the contribution of walking between home and school to daily physical activity in primary age children

Background

The purpose of this study was to identify the independent association of frequency of walking trips between home and school with daily physical activity in a sample of school-aged children.

Methods

Participants were 109 children (mean age = 12.05 years [±0.71]) attending nine primary schools in Adelaide, South Australia. Physical activity was derived from accelerometers with total counts as the outcome variable. Transport patterns were self-reported for each of the previous five school days. Walking trips were summed for each day and across the school week. The relationship between the number of active transport journeys and individual school day and school week physical activity was modelled separately in boys and girls using multiple linear regression.

Results

Frequency of walking was positively associated with school day and school week accelerometer counts in boys, accounting for 6% and 12% of the explained variance in total counts, respectively. There were no significant associations among girls.

Conclusion

Despite sex-specific differences in associations between active transport to school and total physical activity, active transport is likely to have important ancillary benefits for development of independence and physical activity habits, and should continue to be promoted.

Reducing childhood obesity through U.S. federal policy: a microsimulation analysis

BACKGROUND

Childhood obesity prevalence remains high in the U.S., especially among racial/ethnic minorities and low-income populations. Federal policy is important in improving public health given its broad reach. Information is needed about federal policies that could reduce childhood obesity rates and by how much.

PURPOSE

To estimate the impact of three federal policies on childhood obesity prevalence in 2032, after 20 years of implementation.

METHODS

Criteria were used to select the three following policies to reduce childhood obesity from 26 recommended policies: afterschool physical activity programs, a $0.01/ounce sugar-sweetened beverage (SSB) excise tax, and a ban on child-directed fast food TV advertising. For each policy, the literature was reviewed from January 2000 through July 2012 to find evidence of effectiveness and create average effect sizes. In 2012, a Markov microsimulation model estimated each policy's impact on diet or physical activity, and then BMI, in a simulated school-aged population in 2032.

RESULTS

The microsimulation predicted that afterschool physical activity programs would reduce obesity the most among children aged 6-12 years (1.8 percentage points) and the advertising ban would reduce obesity the least (0.9 percentage points). The SSB excise tax would reduce obesity the most among adolescents aged 13-18 years (2.4 percentage points). All three policies would reduce obesity more among blacks and Hispanics than whites, with the SSB excise tax reducing obesity disparities the most.

CONCLUSIONS

All three policies would reduce childhood obesity prevalence by 2032. However, a national $0.01/ounce SSB excise tax is the best option.

Qualitative evaluation of GoGirlGo! Insights from staff on using a curriculum within after-school programs to improve physical activity

BACKGROUND

After-school programs (ASPs) are a promising opportunity for increasing girls' physical activity (PA). Few curricula are targeted specifically for the needs of girls, and the effectiveness of most of these curricula is unknown. One curriculum that is specifically designed to facilitate PA in girls in the ASP setting but has not been formally evaluated is GoGirlGo! (GGG). The purpose of the qualitative assessment was to explore staff's overall satisfaction with GGG and to identify best practices for implementation.

METHOD

A qualitative case study consisting of semistructured interviews with staff (n = 21) was conducted. Data were analyzed using the process of immersion/crystallization.

RESULTS

A majority of participants reported being satisfied with GGG. Best practices for implementation included having site directors schedule time and space for GGG and adapting GGG to fit the needs of the girls. Suggested improvements included increasing the intensity of the PA offered, adding visuals (e.g., videos), and providing interactive staff training.

DISCUSSION

This qualitative exploration of GGG provided several suggested modifications for GGG. These modifications may strengthen GGG and other girl-focused ASP programs to improve girls' ability to obtain recommended levels of PA in ASPs.

Development and psychometric properties of the Y-PASS questionnaire to assess correlates of lunchtime and after-school physical activity in children

Background

To frame interventions, it is useful to understand context- and time-specific correlates of children’s physical activity. To do this, we need accurate assessment of these correlates. There are currently no measures that assess correlates at all levels of the social ecological model, contain items that are specifically worded for the lunchtime and/or after-school time periods, and assess correlates that have been conceptualised and defined by children. The aim of this study was to develop and evaluate the psychometric properties of the lunchtime and after-school Youth Physical Activity Survey for Specific Settings (Y-PASS) questionnaires.

Methods

The Y-PASS questionnaire was administered to 264 South Australian children (146 boys, 118 girls; mean age = 11.7 ± 0.93 years). Factorial structure and internal consistency of the intrapersonal, sociocultural and physical environmental/policy lunchtime and after-school subscales were examined through an exploratory factor analysis. The test-retest reliability of the Y-PASS subscales was assessed over a one-week period on a subsample of children (lunchtime Y-PASS: n = 12 boys, 12 girls, mean age of 11.6 ± 0.8 years; after-school Y-PASS: n = 9 boys, 13 girls; mean age = 11.4 ± 0.9 years).

Results

For the lunchtime Y-PASS, three factors were identified under each of the intrapersonal, sociocultural and physical environmental/policy subscales. For the after-school Y-PASS, six factors were identified in the intrapersonal subscale, four factors in the sociocultural subscale and seven factors in the physical environmental/policy subscale. Following item reduction, all subscales demonstrated acceptable internal consistency (Cronbach alpha = 0.78 – 0.85), except for the lunchtime sociocultural subscale (Cronbach alpha = 0.55). The factors and items demonstrated fair to very high test-retest reliability (ICC = 0.26 – 0.93).

Conclusion

The preliminary reliability and factorial structure evidence suggests the Y-PASS correlate questionnaires are robust tools for measuring correlates of context-specific physical activity in children. The multi-dimensional factor structure provides justification for exploring physical activity correlates from a social ecological perspective and demonstrates the importance of developing items that are context specific. Further development and refinement of the Y-PASS questionnaires is recommended, including a confirmatory factor analysis and exploring the inclusion of additional items.

The tug-of-war: fidelity versus adaptation throughout the health promotion program life cycle

Researchers across multiple fields have described the iterative and nonlinear phases of the translational research process from program development to dissemination. This process can be conceptualized within a "program life cycle" framework that includes overlapping and nonlinear phases: development, adoption, implementation, maintenance, sustainability or termination, and dissemination or diffusion, characterized by tensions between fidelity to the original plan and adaptation for the setting and population. In this article, we describe the life cycle (phases) for research-based health promotion programs, the key influences at each phase, and the issues related to the tug-of-war between fidelity and adaptation throughout the process using a fictionalized case study based on our previous research. This article suggests the importance of reconceptualizing intervention design, involving stakeholders, and monitoring fidelity and adaptation throughout all phases to maintain implementation fidelity and completeness. Intervention fidelity should be based on causal mechanisms to ensure effectiveness, while allowing for appropriate adaption to ensure maximum implementation and sustainability. Recommendations for future interventions include considering the determinants of implementation including contextual factors at each phase, the roles of stakeholders, and the importance of developing a rigorous, adaptive, and flexible definition of implementation fidelity and completeness.

A New Community-Based Outdoor Intervention to Increase Physical Activity in Singapore Children: Findings from Focus Groups

Introduction: Myopia is a significant public health problem in Singapore with estimates that more than 50% of the population is affected by it by the time of adulthood. Childhood obesity is also increasing and has been linked to long-term health problems. Recent studies have found that Singaporean children in Primary 1 spend less than 3 hours a day outdoors which is less than children in other countries. Physical activity has been shown to be protective against obesity and recently, there has been some evidence to suggest that time spent outdoors may reduce the prevalence and severity of myopia. This study aims to explore the barriers and enablers to children in Singapore participating in outdoor activities. Materials and Methods: Qualitative data, gathered from focus group discussions was thematically analysed against the PRECEDE component of the PRECEDE-PROCEED model which provided a conceptual framework for examining factors relevant to children participating in an outdoor activity intervention. A total of 31 people participated in 4 focus groups held over a 6-month period. Results: This feasibility study was exploratory in nature but provided valuable information concerning barriers and enablers to participation. Data informed the development of a larger study. Conclusion: Results indicated that families preferred structured activities such as orienteering and a choice of weekend attendance days and times. Key words: Myopia, Physical activity, Qualitative research, Singapore

Reliabilität und Validität des MoMo-Aktivitätsfragebogens für Jugendliche (MoMo-AFB)

Der vorliegende Beitrag beschreibt die psychometrischen Eigenschaften des Aktivitätsfragebogens des Motorikmoduls (MoMo-AFB; Bös, Worth, Opper, Oberger & Woll, 2009 ), einer Skala zur Messung körperlicher Aktivität bei Kindern und Jugendlichen. Der Fragebogen besteht aus 28 Items, die Alltagsaktivität, Sport in und außerhalb von organisierten Vereinen, Schulsport und die Erfüllung von Aktivitätsguidelines erfassen. Untersucht wurden 109 Schüler und 87 Schülerinnen im Alter zwischen 9 und 17 Jahren. Zur Überprüfung der Reliabilität wurde der Fragebogen zweimal in einem Abstand von sieben Tagen ausgefüllt. Zur Untersuchung der kriteriumsbezogenen Validität wurden die Fragebogendaten mit Accelerometerdaten (ActiGraph GT1X) verglichen. Der durchschnittliche (gewichtete) Kappa-Koeffizient und die Intraklassenkorrelation (ICC) für den Gesamtindex betrugen .66 bzw .68. Der mittels MoMo-AFB und Accelerometer ermittelte Gesamtumfang der Zeit mit moderater bis hoher Intensität der KA zeigte eine signifikante Spearman-Korrelation von r = .29. Der MoMo-AFB ist bezüglich der Reliabilität und Validität vergleichbar mit anderen international publizierten Aktivitätsfragebögen für Jugendliche.

VERB™ Summer Scorecard: increasing tween girls' vigorous physical activity

OBJECTIVE

We assessed changes in the frequency of self-reported physical activity (PA) among tween girls exposed and not exposed to the VERB™ Summer Scorecard (VSS) intervention in Lexington, Kentucky, during 2004, 2006, and 2007.

METHODS

Girls who reported 0-1 day per week of PA were classified as having little or no PA. Girls who reported 2-3 days of PA were classified as low PA performers; 4-5 days of PA were labeled as moderate performers; and 6-7 days of PA were identified as high performers. Logit regression analysis of survey data from girls identified trends in PA frequency across time.

RESULTS

In 2004, participant girls were more likely than girls unfamiliar with VSS (reference group girls) to report high frequency of PA (OR = 1.44, CI = 1.18, 1.70). In 2006, participants were statistically less likely than reference group girls to report low frequency of PA (OR = 1.75, CI = 1.33, 2.21). In 2007, VSS participants were consistently more likely to report moderate frequency (OR = 1.56, CI = 1.35, 1.77) and high frequency of PA (OR = 1.44, CI = 1.24, 1.64) than reference group girls.

CONCLUSION

An innovative, community-driven intervention demonstrated promise for increasing PA among tween girls. VSS may have transportability to other communities to help reverse the secular trend of declining PA for this population segment.

School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18

BACKGROUND

The World Health Organization (WHO) estimates that 1.9 million deaths worldwide are attributable to physical inactivity and at least 2.6 million deaths are a result of being overweight or obese. In addition, WHO estimates that physical inactivity causes 10% to 16% of cases each of breast cancer, colon, and rectal cancers as well as type 2 diabetes, and 22% of coronary heart disease and the burden of these and other chronic diseases has rapidly increased in recent decades.

OBJECTIVES

The purpose of this systematic review was to summarize the evidence of the effectiveness of school-based interventions in promoting physical activity and fitness in children and adolescents.

SEARCH METHODS

The search strategy included searching several databases to October 2011. In addition, reference lists of included articles and background papers were reviewed for potentially relevant studies, as well as references from relevant Cochrane reviews. Primary authors of included studies were contacted as needed for additional information.

SELECTION CRITERIA

To be included, the intervention had to be relevant to public health practice (focused on health promotion activities), not conducted by physicians, implemented, facilitated, or promoted by staff in local public health units, implemented in a school setting and aimed at increasing physical activity, included all school-attending children, and be implemented for a minimum of 12 weeks. In addition, the review was limited to randomized controlled trials and those that reported on outcomes for children and adolescents (aged 6 to 18 years). Primary outcomes included: rates of moderate to vigorous physical activity during the school day, time engaged in moderate to vigorous physical activity during the school day, and time spent watching television. Secondary outcomes related to physical health status measures including: systolic and diastolic blood pressure, blood cholesterol, body mass index (BMI), maximal oxygen uptake (VO2max), and pulse rate.

DATA COLLECTION AND ANALYSIS

Standardized tools were used by two independent reviewers to assess each study for relevance and for data extraction. In addition, each study was assessed for risk of bias as specified in the Cochrane Handbook for Systematic Reviews of Interventions. Where discrepancies existed, discussion occurred until consensus was reached. The results were summarized narratively due to wide variations in the populations, interventions evaluated, and outcomes measured.

MAIN RESULTS

In the original review, 13,841 records were identified and screened, 302 studies were assessed for eligibility, and 26 studies were included in the review. There was some evidence that school-based physical activity interventions had a positive impact on four of the nine outcome measures. Specifically positive effects were observed for duration of physical activity, television viewing, VO2 max, and blood cholesterol. Generally, school-based interventions had little effect on physical activity rates, systolic and diastolic blood pressure, BMI, and pulse rate. At a minimum, a combination of printed educational materials and changes to the school curriculum that promote physical activity resulted in positive effects.In this update, given the addition of three new inclusion criteria (randomized design, all school-attending children invited to participate, minimum 12-week intervention) 12 of the original 26 studies were excluded. In addition, studies published between July 2007 and October 2011 evaluating the effectiveness of school-based physical interventions were identified and if relevant included. In total an additional 2378 titles were screened of which 285 unique studies were deemed potentially relevant. Of those 30 met all relevance criteria and have been included in this update. This update includes 44 studies and represents complete data for 36,593 study participants. Duration of interventions ranged from 12 weeks to six years.Generally, the majority of studies included in this update, despite being randomized controlled trials, are, at a minimum, at moderate risk of bias. The results therefore must be interpreted with caution. Few changes in outcomes were observed in this update with the exception of blood cholesterol and physical activity rates. For example blood cholesterol was no longer positively impacted upon by school-based physical activity interventions. However, there was some evidence to suggest that school-based physical activity interventions led to an improvement in the proportion of children who engaged in moderate to vigorous physical activity during school hours (odds ratio (OR) 2.74, 95% confidence interval (CI), 2.01 to 3.75). Improvements in physical activity rates were not observed in the original review. Children and adolescents exposed to the intervention also spent more time engaged in moderate to vigorous physical activity (with results across studies ranging from five to 45 min more), spent less time watching television (results range from five to 60 min less per day), and had improved VO2max (results across studies ranged from 1.6 to 3.7 mL/kg per min). However, the overall conclusions of this update do not differ significantly from those reported in the original review.

AUTHORS' CONCLUSIONS

The evidence suggests the ongoing implementation of school-based physical activity interventions at this time, given the positive effects on behavior and one physical health status measure. However, given these studies are at a minimum of moderate risk of bias, and the magnitude of effect is generally small, these results should be interpreted cautiously. Additional research on the long-term impact of these interventions is needed.

A systematic review of intervention effects on potential mediators of children's physical activity

Background

Many interventions aiming to increase children’s physical activity have been developed and implemented in a variety of settings, and these interventions have previously been reviewed; however the focus of these reviews tends to be on the intervention effects on physical activity outcomes without consideration of the reasons and pathways leading to intervention success or otherwise.

To systematically review the efficacy of physical activity interventions targeting 5-12 year old children on potential mediators and, where possible, to calculate the size of the intervention effect on the potential mediator.

Methods

A systematic search identified intervention studies that reported outcomes on potential mediators of physical activity among 5-12 year old children. Original research articles published between 1985 and April 2012 were reviewed.

Results

Eighteen potential mediators were identified from 31 studies. Positive effects on cognitive/psychological potential mediators were reported in 15 out of 31 studies. Positive effects on social environmental potential mediators were reported in three out of seven studies, and no effects on the physical environment were reported. Although no studies were identified that performed a mediating analysis, 33 positive intervention effects were found on targeted potential mediators (with effect sizes ranging from small to large) and 73% of the time a positive effect on the physical activity outcome was reported.

Conclusions

Many studies have reported null intervention effects on potential mediators of children’s physical activity; however, it is important that intervention studies statistically examine the mediating effects of interventions so the most effective strategies can be implemented in future programs.

Physical activity interventions for adolescents: an ecological perspective

Many factors contribute to the decline in physical activity (PA) observed during adolescence. We used an ecological framework to review 30 publications of PA interventions published between 1977 and 2009 targeting youth aged 12-18 years (19 PA interventions). We included studies that measured a primary outcome of PA and also examined intervening variables. Most studies targeted the intrapersonal and environmental domains. The body of literature on PA interventions in youth suggests the importance of targeting ecological domains beyond the individual level. Future investigations should be theory-based and include analysis of mediators across ecological domains in order to identify the most effective combination of factors to promote PA in youth.

The role of schools in children's physical activity participation: staff perceptions

The school setting provides a promising environment to increase children's physical activity (PA), however, staff often impact the success of PA within schools. The purpose of this article was to describe the knowledge of elementary school staff related to PA and their perception of the importance of the school environment being conducive to PA prior to the implementation of a recess intervention. Qualitative focus groups were conducted in 12 elementary schools in the Midwest. Grounded theory was used to explore participants' knowledge and perceptions. Participants felt PA was important but believed several factors impacted children's ability to be more active: (i) lack of time due to increasing academic demands, (ii) peer pressure (especially in girls) not to be active and (iii) lack of space and equipment. When discussing recess, staff felt that their encouragement of or active participation in PA with children resulted in more activity. Furthermore, even though participants were aware of PA benefits, they noticed eliminating recess was often used as a punishment for misbehavior. School-based PA promotion and PA opportunities hold great promise for increasing PA in children. However, to maximize these efforts school polices related to training staff about PA are needed.

Reliability, validity, and measurement invariance of the German version of the physical activity enjoyment scale

OBJECTIVE

The purpose of this work is to examine reliability, factorial- and criterion-related validity, and measurement invariance across age and gender of the Physical Activity Enjoyment Scale for children and adolescents in the German-speaking population.

METHODS

Confirmatory factor analysis was applied to questionnaire responses obtained from a cross-sectional sample (Study 1) of 250 girls and 254 boys and a longitudinal sample (Study 2) of 109 boys and 87 girls aged 9 to 17 years.

RESULTS

Results indicated sufficient test-retest reliability (ICC = 0.76), internal consistency (α = 0.89), and criterion-related validity (r = 0.42 with a physical activity diary; r = 0.16 with accelerometry data). Confirmatory factor analyses partially supported the factorial validity and invariance.

CONCLUSIONS

The German version of the Physical Activity Enjoyment Scale is sufficiently reliable and valid to be used for German-speaking children and adolescents. Further research examining the invariance over a longer period is warranted.

Practical physical activity measurement in youth: a review of contemporary approaches

BACKGROUND

The accurate evaluation of physical activity levels amongst youth is critical for quantifying physical activity behaviors and evaluating the effect of physical activity interventions. The purpose of this review is to evaluate contemporary approaches to physical activity evaluation amongst youth.

DATA SOURCES

The literature from a range of sources was reviewed and synthesized to provide an overview of contemporary approaches for measuring youth physical activity.

RESULTS

Five broad categories are described: self-report, instrumental movement detection, biological approaches, direct observation, and combined methods. Emerging technologies and priorities for future research are also identified.

CONCLUSIONS

There will always be a trade-off between accuracy and available resources when choosing the best approach for measuring physical activity amongst youth. Unfortunately, cost and logistical challenges may prohibit the use of "gold standard" physical activity measurement approaches such as doubly labelled water. Other objective methods such as heart rate monitoring, accelerometry, pedometry, indirect calorimetry, or a combination of measures have the potential to better capture the duration and intensity of physical activity, while self-reported measures are useful for capturing the type and context of activity.

Benefits and environmental determinants of physical activity in children and adolescents

In this review, we identify the health benefits associated with physical activity (PA); address the physical activity and sedentary guidelines issued by public health scientists as well as children's compliance to these guidelines; discuss the importance of motor skill acquisition during early childhood; and identify different settings that contribute to physical activity participation and strategies for improving PA in these settings. Results show that regular participation in PA during childhood has numerous immediate benefits, including positive changes in adiposity, skeletal health, psychological health, and cardiorespiratory fitness. Additionally, motor skill development during early childhood may have immediate health benefits as well as long-lasting effects in adulthood. Furthermore, the benefits of PA during childhood also appear to positively influence adult health outcomes, such as increased bone mineral density. Key environmental settings that have been shown to influence children's PA behavior include child care, active commuting to and from school, school recess, school physical education, after-school programs, churches, medical settings, and the home environment. Recommendations for practitioners and researchers are discussed.

Interventions to promote physical activity in young people conducted in the hours immediately after school: a systematic review

BACKGROUND

After school is a critical period in the physical activity and sedentary behaviour patterns of young people. Interventions to promote physical activity during these hours should be informed by existing evidence.

PURPOSE

The present study provides a systematic review of interventions to promote physical activity in young people conducted in the hours immediately after school.

METHODS

The review was conducted in accordance with guidelines from the National Institute for Health and Clinical Excellence. Studies were located through searches of electronic databases, including MEDLINE, EMBASE, PsychINFO and ERIC. For included studies, data were extracted and methodological quality assessed using standardised forms.

RESULTS

Ten papers, reporting nine studies, met inclusion criteria. Three studies reported positive changes in physical activity and six indicated no change. Evidence suggests that single-behaviour interventions may be most effective during these hours.

CONCLUSION

Limitations in study design, lack of statistical power and problems with implementation have likely hindered the effectiveness of interventions in the after-school setting to date. Further work is required to develop interventions during this critical period of the day.

Efficacy of a compulsory homework programme for increasing physical activity and healthy eating in children: the healthy homework pilot study

BACKGROUND

Most physical activity and nutrition interventions in children focus on the school setting; however, evidence suggests that children are less active and have greater access to unhealthy food at home. The aim of this pilot study was to examine the efficacy of a compulsory homework programme for increasing physical activity and healthy eating in children.

METHODS

The six-week 'Healthy Homework' programme and complementary teaching resource was developed under the guidance of an intersectoral steering group. Eight senior classes (year levels 5-6) from two diverse Auckland primary schools were randomly assigned into intervention and control groups. A total of 97 children (57 intervention, 40 control) aged 9-11 years participated in the evaluation of the intervention. Daily step counts were monitored immediately before and after the intervention using sealed multiday memory pedometers. Screen time, sports participation, active transport to and from school, and the consumption of fruits, vegetables, unhealthy foods and drinks were recorded concurrently in a 4-day food and activity diary.

RESULTS

Healthy Homework resulted in a significant intervention effect of 2,830 steps.day-1 (95% CI: 560, 5,300, P = 0.013). This effect was consistent between sexes, schools, and day types (weekdays and weekend days). In addition, significant intervention effects were observed for vegetable consumption (0.83 servings.day-1, 95% CI: 0.24, 1.43, P = 0.007) and unhealthy food consumption (-0.56 servings.day-1, 95% CI: -1.05, -0.07, P = 0.027) on weekends but not weekdays, with no interactions with sex or school. Effects for all other variables were not statistically significant regardless of day type.

CONCLUSIONS

Compulsory health-related homework appears to be an effective approach for increasing physical activity and improving vegetable and unhealthy food consumption in children. Further research in a larger study is required to confirm these initial results.

Effectiveness and spillover of an after-school health promotion program for Hispanic elementary school children

OBJECTIVES

We evaluated the effectiveness and spillover of an after-school health education and physical activity program among Hispanic elementary school children.

METHODS

In fall 2008, students in third through fifth grades in 6 schools in El Paso, Texas (n = 901), were randomized to intervention (n = 292 participants) or control (n = 354) classrooms (4 unknown). Intervention classrooms also contained a spillover group (n = 251) that did not join the after-school program but that completed measurements and surveys. The intervention was a 12-week culturally tailored after-school program meeting twice a week. Four-month outcomes were body mass index, aerobic capacity, and dietary intentions and knowledge. We calculated intervention exposure as the proportion of after-school participants per classroom.

RESULTS

Intervention exposure predicted lower body mass index (P = .045), higher aerobic capacity (P = .012), and greater intentions to eat healthy (P = .046) for the classroom at follow-up. Intervention effectiveness increased with increasing proportions of intervention participants in a classroom. Nonparticipants who had classroom contact with program participants experienced health improvements that could reduce their risk of obesity.

CONCLUSIONS

Spillover of beneficial intervention effects to nonparticipants is a valuable public health benefit and should be part of program impact assessments.

The effect of community and family interventions on young people's physical activity levels: a review of reviews and updated systematic review

BACKGROUND

Next to the school environment, the family and community environment are key for young people's behaviour and for promoting physical activity (PA).

METHODS

A review of reviews was conducted, after which a literature search was conducted (in PubMed, Scopus and PsychInfo) from August 2007 (search date of the most recent review) to October 2010. Inclusion criteria were study population aged 18 years or younger, controlled trial, no PA control condition, PA promotion intervention and reported analyses of a PA-related outcome. Methodological quality was assessed, and data on intervention details, methods and effects on primary and secondary outcomes (PA, body composition and fitness) were extracted.

RESULTS

Three previous reviews were reviewed, including 13 family-based and three community-based interventions. Study inclusion differed for each review, but all concluded that the evidence was limited, although the potential of family-based interventions delivered in the home and including self-monitoring was highlighted. A further six family-based and four community-based interventions were included in the updated review, with a methodological quality score ranging from 2 to 10 and five studies scoring 6 or higher. Significant positive effects on PA were observed for one community-based and three family-based studies. No distinctive characteristics of the effective interventions compared with those that were ineffective were identified.

CONCLUSIONS

The effect of family- and community-based interventions remains uncertain despite improvements in study quality. Of the little evidence of effectiveness, most comes from those targeted at families and set in the home. Further detailed research is needed to identify key approaches for increasing young people's PA levels in family and community settings.

Ready for recess: a pilot study to increase physical activity in elementary school children

BACKGROUND

Creating an optimal environment at recess may be necessary to maximize physical activity (PA) participation in youth. The purpose of this study was to determine the initial effectiveness of an elementary school recess intervention on the amount of moderate PA (MPA) and vigorous PA (VPA) during recess and the school day.

METHODS

This school-based intervention included staff training, activity zones, and playground equipment. The PA levels of third, fourth, and fifth grade students (n = 93) at two schools were measured at baseline and post-intervention using ActiGraph accelerometers. Paired t tests were used to compare percentage of time spent during recess in MPA and VPA. Multiple regressions were utilized to model the effect of intervention, age, sex, race, body mass index, and school on minutes spent in MPA and VPA.

RESULTS

The multiple regression results demonstrated increases of 2.5 minutes of MPA (p < .001) and 2.2 minutes of VPA (p < .001) at recess and an increase of 18.7 minutes of MPA (p < .001) and 4.7 minutes of VPA (p < .001) during the school day. These represent respective increases of 51.2% and 112.2% in the adjusted means of MPA and VPA during recess and respective increases of 92.2% and 71.6% in the adjusted mean of MPA and VPA during school day.

CONCLUSION

Staff training, recreational equipment, and playground markings are inexpensive, simple ways to increase PA during recess so that children can accumulate minutes of PA to meet the recommended guidelines of 60 minutes per day.

A Community-Based Hip-Hop Dance Program for Youth in a Disadvantaged Community in Ottawa: Implementation Findings

Participation in physical activity is important for the positive development and well-being of youth. A community— academic partnership was formed to improve access to physical activity for youth in one disadvantaged community in Ottawa, Canada. After consulting this community, a new hip-hop dance intervention was implemented. Adolescents aged 11 to 16 years participated in one of two 3-month sessions. A girls-only and a boys-and-girls format were offered both sessions. This article investigates the implementation of the intervention from the perspective of the youth participants, parents, staff, and researchers. Multiple methods were used, including document review, observation, questionnaire, focus groups, and interviews. Overall, the consistency and quality of program implementation were moderately satisfactory; however, important concerns were noted and this program appeared to be only partially delivered as planned. These findings will be discussed in terms of suggestions for improving the implementation of this intervention and similar recreation programs prioritizing disadvantaged communities.

Effects of strategies to promote children's physical activity on potential mediators

The aim of this paper is to review evidence of the effectiveness of interventions that present physical activity outcomes and potential mediators of behavioural change among 4-12-year-old children. A systematic search of electronic databases for original research articles published in peer-review journals between January 1985 and the end of June 2006 was carried out. A total of 19 studies that reported intervention effects on physical activity and mediators of behavioural change were identified. The most common mediators reported included physical activity knowledge or beliefs (11 studies); self-efficacy (8 studies); and enjoyment or preference for physical activity (6 studies). Less frequently reported mediators included attitudes, behavioural capability, intentions, outcome expectancies, social norms, social support and self-concept. Seven of the 11 interventions that reported intervention effects on knowledge/beliefs stated positive changes in this mediator. Four of the eight studies that reported intervention effects on self-efficacy had significant improvements; however, only two out of six interventions reported significant improvements in physical activity enjoyment or preference. None of the studies reviewed reported whether changes in these constructs mediated changes in children's physical activity behaviours. Although more than half of the studies reviewed reported a positive intervention effect on children's physical activity, no study carried out a mediating analysis to attempt to identify the mechanisms of change. Future research should more clearly identify the mediators of behavioural change that are being targeted and whether this explains intervention effects.

Physical activity and adolescents: an exploratory randomized controlled trial investigating the influence of affective and instrumental text messages

OBJECTIVE

The present study attempts to develop and pilot the feasibility and efficacy of a novel intervention using affective messages as a strategy to increase physical activity (PA) levels in adolescents. Design An exploratory pilot randomized control trial was used to compare behaviour change over 2 weeks. A modified form of the International Physical Activity Questionnaire was used to assess PA behaviour. A total of 120 adolescents (16-19 years) from 4 sixth forms in West Yorkshire completed the field-based study.

METHOD

Participants were randomly assigned to one of three experimental conditions, or the control condition (N=28). Participants in experimental conditions received 1 short messaging service (SMS) text message per day over the 2 weeks, which included manipulations of either affective beliefs (enjoyable/unenjoyable; N=31), instrumental beliefs (beneficial/harmful; N=30), or a combination of these (N=31). Control participants received one SMS text message per week. Outcomes were measured at baseline and at the end of the 2 week intervention.

RESULTS

PA levels increased by the equivalent of 31.5  minutes of moderate (four metabolic equivalent) activity per week during the study. Main effects of condition (p=.049), and current physical activity level (p=.002) were identified, along with a significant interaction between condition and current activity level (p=.006). However, when the sample was split at baseline into active and inactive participants, a main effect of condition remained for inactive participants only (p=.001). Post hoc analysis revealed that inactive participants who received messages targeting affective beliefs increased their activity levels significantly more than the instrumental (p=.012), combined (p=.002), and control groups (p=.018).

CONCLUSION

Strategies based on affective associations may be more effective for increasing PA levels in inactive individuals.

Engaging parents to increase youth physical activity a systematic review

BACKGROUND

Parents are often involved in interventions to engage youth in physical activity, but it is not clear which methods for involving parents are effective.

PURPOSE

A systematic review was conducted of interventions with physical activity and parental components among healthy youth to identify how best to involve parents in physical activity interventions for children.

EVIDENCE ACQUISITION

Identified intervention studies were reviewed in 2008 for study design, description of family components, and physical activity outcomes. The quality of reporting was assessed using the CONSORT checklist for reporting on trials of nonpharmacologic treatments.

EVIDENCE SYNTHESIS

The literature search identified 1227 articles, 35 of which met review criteria. Five of the 14 RCTs met > or =70% of CONSORT checklist items. Five general procedures for involving parents were identified: (1) face-to-face educational programs or parent training, (2) family participatory exercise programs, (3) telephone communication, (4) organized activities, and (5) educational materials sent home. Lack of uniformity in reporting trials, multiple pilot studies, and varied measurements of physical activity outcomes prohibited systematic conclusions. Interventions with educational or training programs during family visits or via telephone communication with parents appear to offer some promise.

CONCLUSIONS

There is little evidence for effectiveness of family involvement methods in programs for promoting physical activity in children, because of the heterogeneity of study design, study quality, and outcome measures used. There is a need to build an evidence base of more-predictive models of child physical activity that include parent and child mediating variables and procedures that can effect changes in these variables for future family-based physical activity interventions.

Connecting Children to Recreational Activities: Results of a Cluster Randomized Trial

Purpose.

Identify if outreach support increases school-aged children's participation in recreational activities.

Design.

Cluster randomized trial.

Setting.

Sixteen schools in economically vulnerable neighborhoods were randomized to either an intervention or control group.

Subjects.

Children in grades 3 to 5 and their families were invited to participate.

Intervention.

Children in intervention schools were assigned a “connector” (outreach worker) to facilitate participation in recreation activities.

Measures.

The Children's Assessment of Participation and Enjoyment (CAPE) was the primary measure at baseline, middle, and end of 1 year. Demographics, body mass index, child physical and psychosocial health, coordination, and self-esteem were measured.

Analysis.

A generalized linear model was used to test differences between intervention and control groups.

Results.

Three hundred and sixty children enrolled, and 306 (85 %) completed the study. A greater proportion of children in the intervention group compared with the control group increased participation in physical activity (21 % vs. 10%, p = .02). Children who increased their activity were more likely to have higher levels of contact with the connectors (31 % vs. 8%, p = .001). Study limitations included (I) 29% of eligible families participated, (2) first use of the CAPE instrument as a longitudinal measure, and (3) connectors were not blinded to group assignment.

Conclusion.

Children living in vulnerable neighborhoods benefit from outreach workers to connect them with physical activity programs.

Validity and reliability of instruments to assess potential mediators of children's physical activity: A systematic review

This paper aimed to (1) identify potential mediators reported in children's physical activity interventions; and (2) review the psychometric properties of measures of potential mediators included in such interventions. A systematic search of the literature was conducted and studies that reported potential mediators and/or the psychometric properties of measures of potential mediators were retrieved and reviewed. The studies were reviewed for the following psychometric properties: face/logical, construct, and criterion validity; and test-retest and internal consistency (factor analysis and Cronbach's alpha) reliability. Twenty-one potential mediators were identified from 24 published children's physical activity intervention studies; 17 individual, three social, and one physical environmental. Overall, there was considerable variation in the reporting of the psychometric properties of these measures. Reliability properties (specifically Cronbach's alpha) were more commonly reported than validity properties; however, for many potential mediators, the quality of these measures was low. Future studies should examine the psychometric properties of measures of potential mediators to ensure appropriate, valid and reliable instruments are used. This will assist in the ability to accurately determine the efficacy of physical activity interventions among children.

School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6-18

BACKGROUND

The World Health Organization estimates that 1.9 million deaths worldwide are attributable to physical inactivity. Chronic diseases associated with physical inactivity include cancer, diabetes and coronary heart disease.

OBJECTIVES

The purpose of this systematic review is to summarize the evidence of the effectiveness of school-based interventions in promoting physical activity and fitness in children and adolescents.

SEARCH STRATEGY

The search strategy included searching several databases. In addition, reference lists of included articles and background papers were reviewed for potentially relevant studies, as well as references from relevant Cochrane reviews. Primary authors of included studies were contacted as needed for additional information.

SELECTION CRITERIA

To be included, the intervention had to be relevant to public health practice, implemented, facilitated, or promoted by staff in local public health units, implemented in a school setting and aimed at increasing physical activity, report on outcomes for children and adolescents (aged 6 to 18 years), and use a prospective design with a control group.

DATA COLLECTION AND ANALYSIS

Standardized tools were used by two independent reviewers to rate each study's methodological quality and for data extraction. Where discrepancies existed discussion occurred until consensus was reached. The results were summarized narratively due to wide variations in the populations, interventions evaluated and outcomes measured.

MAIN RESULTS

13,841 titles were identified and screened and 482 articles were retrieved. Multiple publications on the same project were combined and counted as one project, resulting in 395 distinct project accounts (studies). Of the 395 studies 104 were deemed relevant and of those, four were assessed as having strong methodological quality, 22 were of moderate quality and 78 were considered weak. In total 26 studies were included in the review. There is good evidence that school-based physical activity interventions have a positive impact on four of the nine outcome measures. Specifically positive effects were observed for duration of physical activity, television viewing, VO2 max, and blood cholesterol. Generally school-based interventions had no effect on leisure time physical activity rates, systolic and diastolic blood pressure, body mass index, and pulse rate. At a minimum, a combination of printed educational materials and changes to the school curriculum that promote physical activity result in positive effects.

AUTHORS' CONCLUSIONS

Given that there are no harmful effects and that there is some evidence of positive effects on lifestyle behaviours and physical health status measures, ongoing physical activity promotion in schools is recommended at this time.