scholarly journals School-Based Interventions Improve Body Image and Media Literacy in Youth: A Systematic Review and Meta-Analysis

2021 ◽  
Author(s):  
Martina Kurz ◽  
Jenny Rosendahl ◽  
Johanna Rodeck ◽  
Julia Muehleck ◽  
Uwe Berger
Keyword(s):  
Body Image ◽  
Body Dissatisfaction ◽  
Media Literacy ◽  
Meta Analysis ◽  
Health Behaviours ◽  
Positive Body Image ◽  
Manual Search ◽  
School Based ◽  
Analytic Review ◽  
School Based Interventions

AbstractBody ideals conveyed by the media and by body comparisons often result in body dissatisfaction, which can cause risky health behaviours and eating disorders, especially in adolescents. We conducted a meta-analytic review of existing school-based interventions designed to enhance media literacy in order to reduce body dissatisfaction and to promote a positive body image. We included controlled trials examining children and adolescents from grade five to nine (age 10–15 years) after a manual search and a comprehensive literature search using PsycINFO, Medline, Web of Science, and CENTRAL. We computed average weighted effect sizes (Hedges’ g) with the help of a random effects model and identified seventeen different programme evaluations with 7392 participants. We found a significantly larger effect on positive body image and media literacy in the intervention compared to control groups. However, heterogeneity was substantial for both outcomes. Results suggest that media literacy interventions have the potential to improve media literacy and reduce body dissatisfaction. Interventions that worked with the principle of induction of cognitive dissonance were the most effective.

School-based interventions for the treatment of childhood obesity: a systematic review, meta-analysis and meta-regression of cluster randomised controlled trials

2021 ◽  
pp. 1-28
Author(s):  
Tarcisus Ho ◽  
Ling Jie Cheng ◽  
Ying Lau
Keyword(s):  
Childhood Obesity ◽  
Children And Adolescents ◽  
Meta Analysis ◽  
Overweight And Obesity ◽  
Risk Of Bias ◽  
Medium Effect ◽  
School Based ◽  
Cluster Randomised ◽  
School Based Interventions ◽  
Meta Regression

Abstract Objective Schools offer an ideal setting for childhood obesity interventions due to their access to children and adolescents. This review aimed to systematically review the impact of school-based intervention for the treatment of childhood obesity. Design Eight databases were searched from inception till May 30, 2020. A revised Cochrane risk-of-bias tool and the Grading of Recommendations, Assessment, Development and Evaluations criteria were used to evaluate the risk of bias and overall evidence. Meta-analysis and meta-regression were performed on Stata software using the random-effects model. Overall effect was evaluated using Hedges’ g, and heterogeneity was assessed using Cochran’s Q and I2. Setting Cluster randomised trials (cluster-RCTs) delivered in school. Participants Children and adolescents (6-18 years of age) with overweight and obesity. Results Twelve cluster-RCTs from seven countries with 1,755 participants were included in the meta-analysis. School-based interventions for the treatment of childhood obesity reduced body mass index (BMI) and BMI z-scores with a medium effect (g=0·52). Subgroup analyses showed the greater effectiveness of brief school-based interventions and the interventions conducted in lower-middle to upper-middle economies. Meta-regression assessed the heterogeneity and the final model, with covariates of the type of economies and trial duration, accounted for 41.2% of the variability. The overall quality of evidence was rated low because of the high risk of bias and inconsistency. Conclusions School-based interventions is a possible approach to provide universal healthcare for the treatment of childhood obesity, and further well-designed cluster-RCTs with longer follow-up are needed. This study is registered with PROSPERO (CRD42020160735).

scholarly journals Effective Components of School-Based Prevention Programs for Child Abuse: A Meta-Analytic Review

2021 ◽  
Author(s):  
Jeanne Gubbels ◽  
Claudia E. van der Put ◽  
Geert-Jan J. M. Stams ◽  
Mark Assink
Keyword(s):  
Child Abuse ◽  
Program Effectiveness ◽  
Meta Analysis ◽  
Prevention Programs ◽  
Effect Sizes ◽  
Positive Effects ◽  
School Based ◽  
Analytic Review ◽  
Program Components ◽  
Self Protection

AbstractSchool-based programs seem promising for child abuse prevention. However, research mainly focused on sexual child abuse and knowledge is lacking on how individual program components contribute to the effectiveness of school-based prevention programs for any form of child abuse. This study aimed to examine the overall effect of these school-based programs on (a) children’s child abuse-related knowledge and (b) self-protection skills by conducting two three-level meta-analyses. Furthermore, moderator analyses were performed to identify how program components and delivery techniques were associated with effectiveness. A literature search yielded 34 studies (158 effect sizes; N = 11,798) examining knowledge of child abuse and 22 studies (99 effect sizes; N = 7804) examining self-protection skills. A significant overall effect was found of school-based programs on both knowledge (d = 0.572, 95% CI [0.408, 0.737], p < 0.001) and self-protection skills (d = 0.528, 95% CI [0.262, 0.794], p < 0.001). The results of the first meta-analysis on children’s child abuse knowledge suggest that program effects were larger in programs addressing social–emotional skills of children (d = 0.909 for programs with this component versus d = 0.489 for programs without this component) and self-blame (d = 0.776 versus d = 0.412), and when puppets (d = 1.096 versus d = 0.500) and games or quizzes (d = 0.966 versus d = 0.494) were used. The second meta-analysis on children’s self-protections skills revealed that no individual components or techniques were associated with increased effectiveness. Several other study and program characteristics did moderate the overall effects and are discussed. In general, school-based prevention programs show positive effects on both knowledge and self-protection skills, and the results imply that program effectiveness can be improved by implementing specific components and techniques.

scholarly journals Long-Term Dietary and Physical Activity Interventions in the School Setting and Their Effects on BMI in Children Aged 6–12 Years: Meta-Analysis of Randomized Controlled Clinical Trials

Healthcare ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 396
Author(s):  
Purificación Cerrato-Carretero ◽  
Raúl Roncero-Martín ◽  
Juan D. Pedrera-Zamorano ◽  
Fidel López-Espuela ◽  
Luis M. Puerto-Parejo ◽  
...  
Keyword(s):  
Physical Activity ◽  
Clinical Trials ◽  
Dietary Habits ◽  
Meta Analysis ◽  
Controlled Clinical Trials ◽  
Randomized Controlled Clinical Trials ◽  
Randomized Controlled ◽  
School Based ◽  
School Based Interventions

Preventive actions and potential obesity interventions for children are mainly researched throughout the school period, either as part of the school curricula or after regular school hours, via interventions mostly lasting less than 12 months. We aimed to perform a meta-analysis on randomized controlled clinical trials to evaluate the evidence of the efficacy of long-term school-based interventions in the management of childhood obesity in terms of BMI from a dietary and physical activity-based approach. Eleven randomized controlled clinical trials were examined using the random effects model, and the results showed that there were no significant effects associated with physical activity + nutrition intervention in school children aged 6–12 years, with a pooled standardized mean difference (SMD) (95% CI) of −0.00 (−0.05, 0.04). No effects were observed after subgroup analysis based on the intervention length. The findings from our study indicate that long-term school-based interventions on physical activity and dietary habits received by children aged 6–12 years seem to have no effect on BMI. However, the promotion of such interventions should not be discouraged, as they promote additional positive health outcomes for other domains of children’s health.

scholarly journals The Effectiveness of School-Based Interventions on Obesity-Related Behaviours in Primary School Children: A Systematic Review and Meta-Analysis of Randomised Controlled Trials

Children ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 489
Author(s):  
Sarah Nally ◽  
Angela Carlin ◽  
Nicole E. Blackburn ◽  
Judith S. Baird ◽  
Jo Salmon ◽  
...  
Keyword(s):  
Sedentary Behaviour ◽  
Vegetable Intake ◽  
Data Extraction ◽  
Meta Analysis ◽  
Primary School Children ◽  
Control Group ◽  
Z Score ◽  
School Based ◽  
Positive Treatment ◽  
School Based Interventions

School-based interventions are promising for targeting a change in obesity-related behaviours in children. However, the efficacy of school-based interventions to prevent obesity remains unclear. This review examined the effectiveness of school-based interventions at changing obesity-related behaviours (increased physical activity, decreased sedentary behaviour and improved nutrition behaviour) and/or a change in BMI/BMI z-score. Following PRISMA guidelines, seven databases were systematically searched from 1 January 2009 to 31 December 2020. Two review authors independently screened studies for eligibility, completed data extraction and assessed the risk of bias of each of the included studies. Forty-eight studies met the inclusion criteria and were included in a narrative synthesis. Thirty-eight studies were eligible for inclusion in a meta-analysis. The findings demonstrate that interventions in children when compared to controls resulted in a small positive treatment effect in the control group (2.14; 95% CI = 0.77, 3.50). There was no significant effect on sedentary behaviour, energy intake and fruit and vegetable intake. Significant reductions were found between groups in BMI kg/m2 (−0.39; 95% CI = −0.47, −0.30) and BMI z-score (−0.05; 95% CI = −0.08, −0.02) in favour of the intervention. The findings have important implications for future intervention research in terms of the effectiveness of intervention components and characteristics.

Abstract 17944: Effects of School-Based Interventions on Body Mass Index in Children and Adolescents: a Systematic Overview and Meta-analysis

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Jiyoon J Park ◽  
Randa Bakhet ◽  
Danica Karl ◽  
Fei Yuan ◽  
Eva Lonn
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Childhood Obesity ◽  
Body Mass ◽  
Meta Analysis ◽  
Control Groups ◽  
School Based ◽  
School Based Interventions ◽  
The Difference ◽  
Dietary Modifications

Background: Childhood obesity is a major public health threat. Various school-based interventions (SBIs) to prevent obesity through physical activity and/or dietary modifications were implemented. However, the effectiveness of such SBIs remains unproven. Therefore, we conducted a meta-analysis of randomized controlled trials (RCTs) of SBIs. Methods: We searched for RCTs of SBIs published since 1990. To be eligible studies had to have an RCT design, to include children aged 6-18 years and SBIs were defined as non-pharmacological and non-surgical interventions carried out in a school setting with a minimum duration of 12 weeks. The primary outcome was change in body mass index (BMI. For each study the difference in the mean change in BMI between the intervention and the control groups was computed. The summary estimate for the difference in mean change in BMI and the 95% confidence interval (CI) was computed using a weighted inverse variance approach and a random- effects model. The I 2 statistic was used to test for heterogeneity. Results: Of 504 studies identified, 41 involving 42 430 participants met the inclusion criteria. SBIs varied greatly between studies by type, duration and delivery. In 10 RCTs the SBI focused on physical activity, in 6 on dietary modifications and in 25 on both physical activity and dietary modifications. SBIs duration ranged from 12 weeks to 4 years. There was no significant difference in mean BMI change between the intervention and the control groups (mean difference = -0.281kg/m 2 ; 95% CI -0.584 to 0.022), although there was significant heterogeneity between the RCTs’ findings (Figure). We found also no consistent impact on other measures of adiposity, physical activity patterns, dietary intakes and psychosocial health and wellbeing. Conclusions: SBIs had no substantial impact on BMI in children aged 6-18 years. Further research is needed to identify effective interventions to prevent childhood obesity.

Media Literacy Interventions to Facilitate Positive Body Image and Embodiment

2019 ◽  
pp. 374-384
Author(s):  
Simon Wilksch
Keyword(s):  
Body Image ◽  
Eating Disorder ◽  
Media Literacy ◽  
Social Power ◽  
Developmental Theory ◽  
Eating Disorder Risk ◽  
Literacy Interventions ◽  
Positive Body Image ◽  
The Media ◽  
Disorder Risk

This chapter explores the media literacy approach to body image and eating disorder risk reduction through a positive body image and embodiment lens. While most media literacy research in the field to date has focused on reducing eating disorder risk factors, available evidence is discussed for how media literacy programs can impact the physical, mental, and social power domains relevant to the developmental theory of embodiment. The media literacy approach appears well suited to investigations of positive body image and embodiment. While media literacy primarily focuses on reducing the perceived importance of appearance and weight, the mechanism by which this is achieved needs further exploration where it is likely that such “positive” features play an important part.

Sign in / Sign up

Export Citation Format

Share Document