The effect of psychological interventions targeting overweight and obesity in school-aged children: a systematic review and meta-analysis

BACKGROUND

Multi-component psychological interventions may mitigate overweight and obesity in children and adolescents. Evidence is, however, scattered on the effectiveness of such interventions. This study aims to review the available evidence on the effectiveness of multi-component psychological interventions on anthropometric measures of school-aged children with overweight or obesity.

METHODS

We systematically searched international databases/search engines including PubMed and NLM Gateway (for MEDLINE), Web of Science, SCOPUS, and Google Scholar up to November 2022 for relevant articles pertaining to psychological weight-loss interventions targeting school-aged children. Two reviewers screened and extracted pertinent data. The quality of included studies was assessed using the Cochrane Risk of Bias Tool for Randomized Trials. Random effect meta-analysis was used to calculate, and pool standardized mean differences (SMD). We distinguished between intervention and maintenance effects. Intervention effects were defined as the mean change in outcome measurement detected between baseline and post-treatment. Maintenance effects were defined as the mean change in outcome measurement between post-treatment and last follow-up.

RESULTS

Of 3,196 studies initially identified, 54 and 30 studies were included in the qualitative and quantitative syntheses, respectively. Most studies reported on group-based interventions. The significant effects of intervention on BMI z-score (SMD -0.66, 95% CI: -1.15, -0.17) and WC (SMD -0.53, 95% CI: -1.03, -0.04) were observed for interventions that centered on motivational interviewing and cognitive behavioral therapy, respectively. Mean BMI and WC did not differ significantly between post-treatment and last follow-up measurement (maintenance effect), indicating that an initial weight loss obtained through the intervention period could be maintained over time.

CONCLUSIONS

Findings indicate that motivational interviewing and cognitive behavioral therapy as interventions to reduce BMI z-score (generalized obesity) and waist circumference (abdominal obesity) are effective and durable. However, detailed analyses on individual components of the interventions are recommended in future effectiveness studies.

Role of Psychologists in Pediatric Endocrinology

The care of youth managed within pediatric endocrine clinics is complex and requires a multi- or interdisciplinary approach. Psychosocial aspects of chronic health conditions are well-documented. Clinical practice guidelines outline the importance of routine psychosocial screening and support for youth with diabetes and obesity. This article outlines the diverse role of psychologists in pediatric endocrinology, including screening, in-clinic intervention, outpatient psychological services, and inpatient consultation. Although research exists documenting the effectiveness of behavioral interventions to improve adherence and health-related quality of life, cost analysis research is emerging.

Psychotherapy versus treatment as usual and other control interventions in children and adolescents with overweight and obesity: a protocol for systematic review with meta-analysis and Trial Sequential Analysis

INTRODUCTION

The prevalence of children with overweight and obesity is increasing worldwide. Multicomponent interventions incorporating diet, physical activity and behavioural change have shown limited improvement to body mass index (BMI). However, the impact of psychotherapy is poorly explored. This systematic review aims to assess the effects of psychotherapeutic approaches for children with all degrees of overweight.

METHODS AND ANALYSIS

We will include randomised clinical trials involving children and adolescents between 0 and 18 years with overweight and obesity, irrespective of publication type, year, status or language up to April 2020. Psychotherapy will be compared with no intervention; wait list control; treatment as usual; sham psychotherapy or pharmaceutical placebo. The following databases will be searched: Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, MEDLINE, Embase, PsycINFO, PubMed, Web of Science, CINAHL and LILACS. Primary outcomes will be BMI z-score, quality of life measured by a validated scale and proportion of patients with serious adverse events. Secondary outcomes will be body weight, self-esteem, anxiety, depression and proportion of patients with non-serious adverse events. Exploratory outcomes will be body fat, muscle mass and serious adverse events. Study inclusion, data extraction and bias risk assessments will be conducted independently by at least two authors. We will assess risk of bias according to Cochrane guidelines and the Cochrane Effective Practice and Organisation of Care guidance. We will use meta-analysis and control risks of random errors with Trial Sequential Analysis. The quality of the evidence will be assessed using Grading of Recommendations Assessment, Development and Evaluation Tool. The systematic review will be reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses and Cochrane guidelines.

ETHICS AND DISSEMINATION

As individual patient data will not be included, we do not require ethics approval. This review will be published in a peer review journal.

PROSPERO REGISTRATION NUMBER

CRD42018086458.

Effectiveness of cognitive-behavioral therapy on nutrition improvement and weight of overweight and obese adolescents: A randomized controlled trial

AIM

To assess the effectiveness of a cognitive-behavioral treatment (CBT) program on weight reduction among Iranian adolescents who are overweight.

METHODS

Using a randomized controlled trial design, 55 adolescents who were overweight (mean [SD] age = 14.64 [1.69] years; zBMI = 2.18 [0.65]) were recruited in the CBT program and 55 in the treatment as usual (TAU; mean age = 14.88 [1.50]; zBMI = 2.09 [0.57]) group. All the participants completed several questionnaires (Child Dietary Self-Efficacy Scale; Weight Efficacy Lifestyle questionnaire; Physical Exercise Self-Efficacy Scale; Pediatric Quality of Life Inventory; and self-reported physical activity and diet) and had their anthropometrics measured (height, weight, waist and hip circumferences, and body fat).

RESULTS

The CBT group consumed significantly more fruits and juice, vegetables, and dairy in the 6-month follow-up as compared with the TAU group (p-values <0.001). The CBT group consumed significantly less sweet snacks, salty snacks, sweet drinks, sausages/processed meat, and oils in the six-month follow-up compared with the TAU group (p-values<0.001). Additionally, the waist circumference, BMI, waist-hip ratio, and fat mass were significantly decreased in the CBT group in the six-month follow-up compared with the TAU group (p-values<0.005). The CBT group significantly improved their psychosocial health, physical activity, and health-related quality of life (p-values<0.001).

CONCLUSION

The CBT program showed its effectiveness in reducing weight among Iranian adolescents who were overweight. Healthcare providers may want to adopt this program to treat excess weight problems among adolescents.

Implementation of childhood obesity identification and prevention strategies in primary care: A quality improvement project

The high incidence and prevalence of childhood obesity, coupled with significant morbidity and financial burden, clearly suggest the need for identification and implementation of effective pediatric obesity prevention strategies in primary care. A solution to this problem includes evidence based clinical guidelines that provide concise, culturally appropriate information on the identification and prevention of childhood obesity in primary care settings. The objective of this quality improvement project was to implement childhood obesity identification and prevention guidelines from evidence-based recommendations into practice. Guidelines were implemented during preventative care visits through the use of a tracking form. The development of the tracking form included input from practice staff resulting in increased fidelity. The tracking form included directions for clear and concise guideline implementation and provided opportunities to record patient BMI, nutritional intake, physical activity, familial obesity prevention education and motivational interviewing and facilitated a practice increase in childhood obesity identification and education. Presence of chart indicators, including nutrition and exercise history, were analyzed to determine the fidelity of the practice change in obesity identification and prevention education. Key outcomes included a significant (p < .0001) practice increase in childhood obesity identification as well as a significant increase (p < .05) in documentation of obesity prevention education through motivational interviewing. Practice change incorporating childhood obesity identification and familial prevention guidelines had positive effects in a pediatric population. Implementation of evidence-based guidelines can result in increased identification of children at risk for childhood obesity and enhanced familial obesity prevention education; leading to the long-term goal of creating healthier lifestyles and decreasing risk factors in a vulnerable population.

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.

External validity reporting in behavioral treatment of childhood obesity: a systematic review

CONTEXT

To aid translation of childhood obesity interventions evidence into practice, research studies must report results in a way that better supports pragmatic decision making. The current review evaluated the extent to which information on key external validity dimensions, participants, settings, interventions, outcomes, and maintenance of effects, was included in research studies on behavioral treatments for childhood obesity.

EVIDENCE ACQUISITION

Peer-reviewed studies of behavioral childhood obesity treatments published between 1980 and 2008 were identified from (1) electronic searches of social science and medical databases; (2) research reviews of childhood obesity interventions; and (3) reference lists cited in these reviews. Included studies reported on a controlled obesity intervention trial, targeted overweight or obese children aged 2-18 years, included a primary or secondary anthropometric outcome, and targeted change in dietary intake or physical activity behaviors.

EVIDENCE SYNTHESIS

1071 publications were identified and 77 met selection criteria. Studies were coded on established review criteria for external validity elements. All studies lacked full reporting of generalizability elements. Across criteria, the average reporting was 23.9% (range=0%-100%). Infrequently reported were setting-level selection criteria and representativeness, characteristics regarding intervention staff, implementation of the intervention content, costs, and program sustainability.

CONCLUSIONS

Enhanced reporting of relevant and pragmatic information in behavioral investigations of childhood obesity interventions is needed to improve the ability to evaluate the applicability of results to practice implementation. Such evidence would improve translation of research to practice, provide additional explanation for variability in intervention outcomes, and provide insights into successful adaptations of interventions to local conditions.

Psychosocial correlates of healthy beliefs, choices, and behaviors in overweight and obese school-age children: a primary care healthy choices intervention pilot study

The relationships among weight, mental health, social competence, healthy lifestyle beliefs, choices, and behaviors in overweight and obese school-age children (9 to 12 years) who were participating in a pilot Healthy Choices Intervention Program were examined using a descriptive correlational design. Results indicated that the children's weight negatively correlated with the children's self-concept, social skills, and, most importantly, healthy lifestyle choices. Their healthy lifestyle beliefs demonstrated positive correlations with their intentions to choose a healthy lifestyle. The children's healthy lifestyle beliefs and choices also were associated with increased cooperation and empathy behaviors. A positive self-concept was associated with decreased anxiety and depressive symptomology. These data support the need for health care providers to understand the psychological and social issues that overweight and obese school-age children experience. Cognitive behavior skills building techniques, such as those in the Healthy Choices Intervention Program, may promote healthy lifestyle choices and behaviors.

Family-based behavioural treatment of childhood obesity in a UK National Health Service setting: randomized controlled trial

Background

The best outcomes for treating childhood obesity have come from comprehensive family-based programmes. However there are questions over their generalisability.

Objective

To examine the acceptability and effectiveness of ‘family-based behavioural treatment’ (FBBT) for childhood obesity in an ethnically and socially diverse sample of families in a UK National Health Service (NHS) setting.

Methods

In this parallel group, randomised controlled trial, 72 obese children were randomised to FBBT or waiting list control. Primary outcomes were body mass index (BMI) and BMI standard deviation scores (SDS). Secondary outcomes were weight, weight SDS, height, height SDS, waist, waist SDS, fat mass index, fat free mass index, blood pressure, and psychosocial measures. Outcomes were assessed at baseline and post-treatment, with analyses on the 6 month data done on an intent-to-treat (ITT) basis. Follow-up anthropometric data were collected at twelve months for the treatment group.

Results

ITT analyses included all children with baseline data (n=60). There were significant BMI SDS changes (p<0.01) for the treatment and control groups of −0.11 (0.16) and −0.10 (1.6). The treatment group showed a significant reduction in systolic blood pressure (−0.24 (0.7), p<0.05) and improvements in quality of life and eating attitudes (p<0.05), with no significant changes for the control group. However the between-group treatment effects for BMI, body composition, blood pressure and psychosocial outcomes were not significant. There was no overall change in BMI or BMI SDS from 0-12 months for the treatment group. No adverse effects were reported.

Conclusions

Both treatment and control groups experienced significant reductions in level of overweight, but with no significant difference between them. There were no significant group differences for any of the secondary outcomes.

Comparison of a family-based group intervention for youths with obesity to a brief individual family intervention: a practical clinical trial of positively fit

OBJECTIVE

To examine the effectiveness of a family-based behavioral group intervention (Positively Fit; PF) for pediatric obesity relative to a brief family intervention (BFI) in a sample of treatment-seeking children and adolescents.

METHODS

Families (n = 93) were randomized to treatment condition. Assessments were conducted at pre- and posttreatment and at 12-month follow-up. Outcome indices included standardized body mass index (BMI) and quality of life (QOL).

RESULTS

Results indicated a significant reduction in zBMI at posttreatment and follow-up across both conditions. At follow-up, BFI and PF participants evidenced average reductions of .12 and .19 zBMI units, respectively. Children demonstrated better outcomes than adolescents across both conditions. Results indicated clinically significant improvements in parent-reported QOL at postintervention and in self-reported QOL at follow-up for PF participants.

CONCLUSIONS

Results suggest the effectiveness of family-based interventions for pediatric obesity in clinical settings among younger children. Neither intervention was effective in terms of reducing zBMI among adolescents.

Cognitive-behavioral therapy for weight management and eating disorders in children and adolescents

Eating disorders and obesity in children and adolescents involve harmful behavior and attitude patterns that infiltrate daily functioning. Cognitive-behavioral therapy (CBT) is well suited to treating these conditions, given the emphasis on breaking negative behavior cycles. This article reviews the current empirically supported treatments and the considerations for youth with weight control issues. New therapeutic modalities (ie, enhanced CBT and the socioecologic model) are discussed. Rationale is provided for extending therapy beyond the individual treatment milieu to include the family, peer network, and community domains to promote behavior change, minimize relapse, and support healthy long-term behavior maintenance.

An evaluation of a personal electronic device to enhance self-monitoring adherence in a pediatric weight management program using a multiple baseline design

OBJECTIVE

To examine the effectiveness of a personal electronic device (PED) in order to improve adherence to self-monitoring of dietary intake and physical activity.

METHOD

The impact of a PED on adherence to self-monitoring goals was examined in a multiple baseline design across three overweight adolescents. During baseline, a traditional paper-and-pencil method of self-monitoring was utilized. The subsequent study phase introduced a PED for self-monitoring. Percent self-monitoring goal attainment was the outcome of interest.

RESULTS

During baseline, attainment of self-monitoring goals was low for all three participants (3-4%). Each subject's percent attainment of self-monitoring goal increased upon the introduction of the PED. For two of the three subjects this increase was stable (~75 and 100%) post-intervention. For the third subject the increase in percent attainment of self-monitoring goal was more variable but remained above baseline levels.

CONCLUSION

PEDs have potential for improving self-monitoring in the context of behavioral weight management treatment for adolescents.

Interventions for treating obesity in children

BACKGROUND

Child and adolescent obesity is increasingly prevalent, and can be associated with significant short- and long-term health consequences.

OBJECTIVES

To assess the efficacy of lifestyle, drug and surgical interventions for treating obesity in childhood.

SEARCH STRATEGY

We searched CENTRAL on The Cochrane Library Issue 2 2008, MEDLINE, EMBASE, CINAHL, PsycINFO, ISI Web of Science, DARE and NHS EED. Searches were undertaken from 1985 to May 2008. References were checked. No language restrictions were applied.

SELECTION CRITERIA

We selected randomised controlled trials (RCTs) of lifestyle (i.e. dietary, physical activity and/or behavioural therapy), drug and surgical interventions for treating obesity in children (mean age under 18 years) with or without the support of family members, with a minimum of six months follow up (three months for actual drug therapy). 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 were excluded.

DATA COLLECTION AND ANALYSIS

Two reviewers independently assessed trial quality and extracted data following the Cochrane Handbook. Where necessary authors were contacted for additional information.

MAIN RESULTS

We included 64 RCTs (5230 participants). Lifestyle interventions focused on physical activity and sedentary behaviour in 12 studies, diet in 6 studies, and 36 concentrated on behaviorally orientated treatment programs. Three types of drug interventions (metformin, orlistat and sibutramine) were found in 10 studies. No surgical intervention was eligible for inclusion. The studies included varied greatly in intervention design, outcome measurements and methodological quality.Meta-analyses indicated a reduction in overweight at 6 and 12 months follow up in: i) lifestyle interventions involving children; and ii) lifestyle interventions in adolescents with or without the addition of orlistat or sibutramine. A range of adverse effects was noted in drug RCTs.

AUTHORS' CONCLUSIONS

While there is limited quality data to recommend one treatment program to be favoured over another, this review shows that combined behavioural lifestyle interventions compared to standard care or self-help can produce a significant and clinically meaningful reduction in overweight in children and adolescents. In obese adolescents, consideration should be given to the use of either orlistat or sibutramine, as an adjunct to lifestyle interventions, although this approach needs to be carefully weighed up against the potential for adverse effects. Furthermore, high quality research that considers psychosocial determinants for behaviour change, strategies to improve clinician-family interaction, and cost-effective programs for primary and community care is required.

Attrition in randomized controlled trials for pediatric chronic conditions

OBJECTIVE

To examine attrition variables in randomized controlled trials of cognitive behavioral interventions for children with chronic illnesses.

METHODS

We examined attrition rates reported on 40 randomized cognitive behavioral interventions published in six pediatric research journals, during the years 2002-2007. Intervention focus was limited to children with a chronic medical condition, such as asthma, obesity, arthritis, diabetes, cancer, sickle cell disease, and cystic fibrosis.

RESULTS

Mean rate of enrollment refusal was 37% (range 0-75%). Mean attrition rate was 20% (range 0-54%) for initial follow-up and 32% (range 0-59%) for extended follow-up. Of the reviewed articles, 40% included a CONSORT diagram.

CONCLUSIONS

Strategies that can be used to limit attrition include tailoring recruitment to the study population, providing personalized feedback, maintaining consistent study procedures, providing incentives, and using intensive tracking measures. There is a need for standardized definitions and reporting of attrition rates in randomized cognitive behavioral intervention studies.

Treatment of adolescent overweight and obesity

Adolescence is a vulnerable period for the development of obesity, and adolescent weight tracks strongly into adulthood. Previous reviews of treatment strategies have failed to discriminate between adolescents and children, thereby, disregarding the uniqueness of this population. Hence, this review aims to summarise the evidence for treatment approaches for adolescent obesity. Pubmed, OVID, EBSCOhost and Google Scholar were searched for randomised controlled trials, meta-analyses and systematic reviews testing treatments for overweight/obese adolescents (aged 12-19 years), published from 1982-2006 in English. Eligible studies had to assess either weight, percentage overweight, body mass index (BMI) or body fat. Thirty-four randomised controlled trials were eligible. The results of this review indicate that the safety and efficacy of surgical and pharmacotherapy treatments for adolescent obesity is uncertain. Diet and physical activity approaches may improve obese status in the short term. However, obesity interventions appear more effective when strategies are combined, rather than when used in isolation. Psychological interventions, such as behavioural and cognitive behavioural therapy, show promise in achieving the necessary lifestyle changes for obesity reduction; however, long-term follow-up studies are needed. There were multiple limitations in appraising the literature. Inconsistent definitions of overweight/obesity make comparisons between studies difficult. Many studies have not used direct adiposity measures, have failed to assess pubertal status or have not used an exclusive adolescent sample. We conclude that, despite these limitations, current evidence indicates that behavioural and cognitive behavioural strategies combined with diet and physical activity approaches may assist in reducing adolescent obesity,although long-term follow-up studies are needed.

Recommendations for treatment of child and adolescent overweight and obesity

In this article, we review evidence about the treatment of obesity that may have applications in primary care, community, and tertiary care settings. We examine current information about eating behaviors, physical activity behaviors, and sedentary behaviors that may affect weight in children and adolescents. We also review studies of multidisciplinary behavior-based obesity treatment programs and information about more aggressive forms of treatment. The writing group has drawn from the available evidence to propose a comprehensive 4-step or staged-care approach for weight management that includes the following stages: (1) Prevention Plus; (2) structured weight management; (3) comprehensive multidisciplinary intervention; and (4) tertiary care intervention. We suggest that providers encourage healthy behaviors while using techniques to motivate patients and families, and interventions should be tailored to the individual child and family. Although more intense treatment stages will generally occur outside the typical office setting, offices can implement less intense intervention strategies. We not ony address specific patient behavior goals but also encourage practices to modify office systems to streamline office-based care and to prepare to coordinate with professionals and programs outside the office for more intensive interventions.

A meta-analysis of family-behavioral weight-loss treatments for children

Childhood obesity is a major concern in the United States. Because children's diets can be significantly influenced by parental behavior (e.g., food purchases, meal preparation), researchers have included family intervention components in some childhood weight-loss programs. The relative benefits of adding the family component have not been well-established. This meta-analysis compared the mean effect sizes of family-behavioral, other treatment, and control weight-loss groups for children. A comprehensive literature review identified 16 studies with a total of 44 treatment groups. Results indicated that interventions containing a family-behavioral component produced larger effect sizes than the alternative treatment groups. This demonstrates that the inclusion of a family component may be advantageous to a child's weight-loss treatment.

Treatment of pediatric overweight: an examination of feasibility and effectiveness in an applied clinical setting

OBJECTIVE

To examine the effectiveness and feasibility of an evidence-based treatment for weight loss in children.

METHODS

A total of 41 children who were overweight and their families were provided a modified version of the Traffic Light Diet (TLD) in an applied setting. Children who received treatment as usual (TAU) constituted a comparison sample.

RESULTS

Children receiving the modified TLD demonstrated a significantly greater reduction in standardized body mass index (z-BMI) than children receiving TAU.

CONCLUSIONS

The TLD is a feasible treatment that can be implemented in applied settings that include samples often excluded from treatment efficacy studies. Results are discussed in the context of bridging the gap between science and service.

Effective weight loss for overweight children: a meta-analysis of intervention studies

Childhood overweight has increased in the United States. Success of weight-loss programs has been limited (Barlow, S.E., & Dietz, W.H. (1998). Obesity evaluation and treatment: Expert committee recomendations. Pediatrics, 102, e29.). The purpose of this investigation was to systematically examine the effectiveness of weight-loss interventions for children. For this meta-analysis, seven weight-loss intervention studies were coded and quality index scores calculated. The interventions had a significant positive effect on weight-loss average d = 0.95, with a 95% confidence interval of 0.79 to 1.11. Limited interventional studies with effective long-term maintenance of weight loss in children are available in the literature. However, there are effective methods for weight loss in children.