Intervention program for obese school children

The current state of international research on the effectiveness of school nurses in promoting the health of children and adolescents: An overview of reviews

OBJECTIVE

School nurses are engaging worldwide to promote and protect children's health. Many researchers who examined the effectiveness of the school nurse criticized the inadequate methodology employed in many of the studies. We therefore carried out an evaluation on the effectiveness of school nurses based on a rigorous methodological approach.

METHODS

In this overview of reviews we performed an electronic databank search and global research results on the effectiveness of school nurses were sought. We identified 1,494 records through database search. Abstracts and full texts were screened and summarized using the dual control principle. We summarized the aspects of quality criteria as well as the significance of the effectiveness of the school nurse. In the first step, k = 16 systematic reviews were summarized and evaluated following the AMSTAR-2 guidelines. In a second step, j = 357 primary studies included in these k = 16 reviews were summarized and assessed following the GRADE guidelines.

RESULTS

Research results on the effectiveness of school nurses show that school nurses play a key role in improving the health of children with asthma (j = 6) and diabetes (j = 2), results on combating obesity are less certain (j = 6). The quality of identified reviews is mostly very low with only six studies of medium quality, of which one identified as a meta-analysis. A total of j = 289 primary studies were identified. Approximately 25% (j = 74) of identified primary studies were either randomized controlled trials (RCT) or observational studies, of which roughly 20% (j = 16) had a low risk of bias. Studies with physiological variables such as blood glucose or asthma labeling led to higher quality results.

CONCLUSION

This paper represents an initial contribution and recommends further evaluation of the effectiveness of school nurses, particularly in the areas of mental health or children from low socioeconomic backgrounds. The general lack of quality standards in school nursing research should be integrated into the scientific discourse of school nursing researchers to provide robust evidence for policy planners and researchers.

Pediatric obesity treatment, self-esteem, and body image: A systematic review with meta-analysis

BACKGROUND

Pediatric obesity impacts on multiple domains of psychological health, including self-esteem and body image.

OBJECTIVE

To determine the effect of multicomponent pediatric obesity treatment interventions on self-esteem and body image.

METHODS

A systematic search of published literature up to June 2019 was undertaken using electronic databases MEDLINE, EMBASE, Cochrane Library, and PsychINFO. Eligible studies implemented an obesity treatment intervention, including a dietary and physical activity component with/without a behavioral component, in children and adolescents with overweight/obesity, and assessed self-esteem and/or body image. Data were extracted by one reviewer and cross-checked. Meta-analysis was used to combine outcome data and moderator analysis conducted to identify intervention characteristics influencing outcomes.

RESULTS

64 studies were identified. Meta-analysis of 49 studies (n = 10471) indicated that pediatric obesity treatment results in increased self-esteem postintervention (standardized mean difference, [SE] 0.34 [0.03], P < .001, I² 87%), maintained at follow-up (0.35 [0.05] P < .001, I² 79%, 17 studies). Similarly, meta-analysis of 40 studies (n = 2729) indicated improvements in body image postintervention (0.40 [0.03], P < .001, I² 73%), maintained at follow-up (0.41 [0.08], P < .001, I² 89%, 16 studies).

CONCLUSIONS

Pediatric obesity treatment improves self-esteem and body image in the short and medium term. These findings may underpin improvements in other psychological outcomes.

Diet, physical activity and behavioural interventions for the treatment of overweight or obese children from the age of 6 to 11 years

BACKGROUND

Child and adolescent overweight and obesity has increased globally, and can be associated with significant short- and long-term health consequences. This is an update of a Cochrane review published first in 2003, and updated previously in 2009. However, the update has now been split into six reviews addressing different childhood obesity treatments at different ages.

OBJECTIVES

To assess the effects of diet, physical activity and behavioural interventions (behaviour-changing interventions) for the treatment of overweight or obese children aged 6 to 11 years.

SEARCH METHODS

We searched CENTRAL, MEDLINE, Embase, PsycINFO, CINAHL, LILACS as well as trial registers ClinicalTrials.gov and ICTRP Search Portal. We checked references of studies and systematic reviews. We did not apply any language restrictions. The date of the last search was July 2016 for all databases.

SELECTION CRITERIA

We selected randomised controlled trials (RCTs) of diet, physical activity, and behavioural interventions (behaviour-changing interventions) for treating overweight or obese children aged 6 to 11 years, with a minimum of six months' follow-up. We excluded interventions that specifically dealt with the treatment of eating disorders or type 2 diabetes, or included participants with a secondary or syndromic cause of obesity.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened references, extracted data, assessed risk of bias, and evaluated the quality of the evidence using the GRADE instrument. We contacted study authors for additional information. We carried out meta-analyses according to the statistical guidelines in the Cochrane Handbook for Systematic Reviews of Interventions.

MAIN RESULTS

We included 70 RCTs with a total of 8461 participants randomised to either the intervention or control groups. The number of participants per trial ranged from 16 to 686. Fifty-five trials compared a behaviour-changing intervention with no treatment/usual care control and 15 evaluated the effectiveness of adding an additional component to a behaviour-changing intervention. Sixty-four trials were parallel RCTs, and four were cluster RCTs. Sixty-four trials were multicomponent, two were diet only and four were physical activity only interventions. Ten trials had more than two arms. The overall quality of the evidence was low or very low and 62 trials had a high risk of bias for at least one criterion. Total duration of trials ranged from six months to three years. The median age of participants was 10 years old and the median BMI z score was 2.2.Primary analyses demonstrated that behaviour-changing interventions compared to no treatment/usual care control at longest follow-up reduced BMI, BMI z score and weight. Mean difference (MD) in BMI was -0.53 kg/m2 (95% confidence interval (CI) -0.82 to -0.24); P < 0.00001; 24 trials; 2785 participants; low-quality evidence. MD in BMI z score was -0.06 units (95% CI -0.10 to -0.02); P = 0.001; 37 trials; 4019 participants; low-quality evidence and MD in weight was -1.45 kg (95% CI -1.88 to -1.02); P < 0.00001; 17 trials; 1774 participants; low-quality evidence.Thirty-one trials reported on serious adverse events, with 29 trials reporting zero occurrences RR 0.57 (95% CI 0.17 to 1.93); P = 0.37; 4/2105 participants in the behaviour-changing intervention groups compared with 7/1991 participants in the comparator groups). Few trials reported health-related quality of life or behaviour change outcomes, and none of the analyses demonstrated a substantial difference in these outcomes between intervention and control. In two trials reporting on minutes per day of TV viewing, a small reduction of 6.6 minutes per day (95% CI -12.88 to -0.31), P = 0.04; 2 trials; 55 participants) was found in favour of the intervention. No trials reported on all-cause mortality, morbidity or socioeconomic effects, and few trials reported on participant views; none of which could be meta-analysed.As the meta-analyses revealed substantial heterogeneity, we conducted subgroup analyses to examine the impact of type of comparator, type of intervention, risk of attrition bias, setting, duration of post-intervention follow-up period, parental involvement and baseline BMI z score. No subgroup effects were shown for any of the subgroups on any of the outcomes. Some data indicated that a reduction in BMI immediately post-intervention was no longer evident at follow-up at less than six months, which has to be investigated in further trials.

AUTHORS' CONCLUSIONS

Multi-component behaviour-changing interventions that incorporate diet, physical activity and behaviour change may be beneficial in achieving small, short-term reductions in BMI, BMI z score and weight in children aged 6 to 11 years. The evidence suggests a very low occurrence of adverse events. The quality of the evidence was low or very low. The heterogeneity observed across all outcomes was not explained by subgrouping. Further research is required of behaviour-changing interventions in lower income countries and in children from different ethnic groups; also on the impact of behaviour-changing interventions on health-related quality of life and comorbidities. The sustainability of reduction in BMI/BMI z score and weight is a key consideration and there is a need for longer-term follow-up and further research on the most appropriate forms of post-intervention maintenance in order to ensure intervention benefits are sustained over the longer term.

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 primary care healthy choices intervention program for overweight and obese school-age children and their parents

INTRODUCTION

The escalating crisis of childhood overweight and obesity creates an urgent demand for evidence-based interventions that can be used by primary care providers. Therefore, the purpose of this study was to test the feasibility, acceptability, and preliminary efficacy of a theory-based Healthy Choices Intervention (HCI) Program with fifteen 9-12 year old overweight and obese children and their parents in a primary care setting.

METHODS

A 1-group, 7-week pre-/posttest study design was used. Outcome measures included: body mass index (BMI) percentile, physical activity and nutrition knowledge, beliefs, choices and behaviors, anxiety, depression, self-concept, and social competence.

RESULTS

Children and parents found the HCI to be useful and informative. Positive effects of the HCI for the children included decreased BMI percentile, increased knowledge, beliefs, choices and behaviors, and self-control. Positive effects of the intervention for the parents included increased knowledge, beliefs, behaviors, and decreased anxiety.

DISCUSSION

This study provides evidence to support the feasibility, acceptability, and preliminary effects of the HCI with overweight and obese school-age children and their parents within a primary care setting.

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.

The Effects of Weight Management Programs on Self-Esteem in Pediatric Overweight Populations

OBJECTIVE

Review published findings on self-esteem and pediatric overweight, and changes in self-esteem subsequent to weight management programs.

METHODS

We used PsycInfo and MedLine searches to identify peer-reviewed journal articles examining self-esteem changes following participation in weight management programs.

RESULTS

Data regarding the relationship between self-esteem and obesity is mixed. Factors that place overweight children "at-risk" for low self-esteem include early adolescence, female gender, identification with majority cultural standards of body shape, exposure to teasing and peer victimization, a history of greater parental control over feeding, and internal attributions about weight status. Data from intervention studies suggest positive effects on self-esteem across settings. Components related to self-esteem improvements include weight change, parent involvement, and group intervention format.

CONCLUSIONS

Well-designed, longitudinal studies using multidimensional measures of self-esteem, and following CONSORT guidelines are needed to confirm and expand these findings. Emphasis should be placed on examining mediators and moderators of self-esteem change.

Childhood obesity

Approximately 10% of children are obese. Twin and adoption studies demonstrate a large genetic component to obesity, especially in adults. However, the increasing prevalence of obesity over the last 20 years can only be explained by environmental factors. In most obese individuals, no measurable differences in metabolism can be detected. Few children engage in regular physical activity. Obese children and adults uniformly underreport the amount of food they eat. Obesity is particularly related to increased consumption of high-fat foods. BMI is a quick and easy way to screen for childhood obesity. Treating childhood obesity relies on positive family support and lifestyle changes involving the whole family. Food preferences are influenced early by parental eating habits, and when developed in childhood, they tend to remain fairly constant into adulthood. Children learn to be active or inactive from their parents. In addition, physical activity (or more commonly, physical inactivity) habits that are established in childhood tend to persist into adulthood. Weight loss is usually followed by changes in appetite and metabolism, predisposing individuals to regain their weight. However, when the right family dynamics exist--a motivated child with supportive parents--long-term success is possible.

Recommendations from overweight youth regarding school-based weight control programs

This study aimed to obtain recommendations from overweight youth on the development of school-based weight control programs; to determine their level of interest in participation; and to learn about the outcomes they desired from such a program. Because obesity is prevalent among youth of certain minority groups and low socioeconomic backgrounds, and since few programs address the needs of these youth, the study population was selected from inner city public schools with high percentages of youth from minority groups and low socioeconomic backgrounds. Sixty-one overweight adolescents participated in semi-structured, in-depth individual interviews, which were audiotaped, transcribed, coded, and analyzed. Findings indicated that many overweight adolescents were interested in participating in school-based weight control programs, provided they are conducted in a supportive manner; offer enjoyable activities; are informative; are sensitive to the needs of overweight youth; and do not conflict with other activities. Adolescents stressed the importance of a program leader who understands the difficulties that overweight youth face, and many expressed their preference for a leader who is currently overweight or had been overweight in the past.

Self-esteem and obesity in children and adolescents: a literature review

The relationship between self-esteem and obesity has not received a great deal of empirical evaluation using strong research methodologies. Thus, it is not clear whether self-esteem is consistently related to obesity, whether the relationship is global or specific to physical appearance, whether the relationship differs by demographic variables such as age, gender or race/ethnicity, or whether self-esteem moderates weight changes during weight loss treatment programs. This review examines these questions using empirical evidence from 35 studies on the relationship between self-esteem and obesity in children and adolescents. Thirteen of 25 cross sectional studies clearly showed lower self-esteem in obese adolescents and children. Five of the six cross-sectional studies that included a measure of body esteem found lower body esteem in obese compared to normal weight children and adolescents. Results from two prospective studies examining initial self-esteem and later obesity were inconsistent. Results from six of eight treatment studies showed that weight loss treatment programs appear to improve self-esteem. However, it is unclear whether increases in self-esteem are related to enhanced weight loss. Many studies were methodologically weak primarily due to small and select samples and lack of appropriate comparison groups. Implications for prevention and treatment of childhood obesity are discussed.