Elsevier

Journal of Nutrition Education and Behavior

Volume 40, Issue 6, November–December 2008, Pages 369-373
Journal of Nutrition Education and Behavior

Research brief
Childhood Obesity: Concept, Feasibility, and Interim Results of a Local Group-based, Long-term Treatment Program

https://doi.org/10.1016/j.jneb.2007.07.009Get rights and content

Abstract

Objective

The authors performed a group-based program for obese children and adolescents in Bavaria, Germany to enable them to establish a health-oriented lifestyle and to reduce overweight. The authors compared this program with a control approach based on the patients' own initiative.

Design

This is a controlled clinical trial.

Setting

A nutrition program for outpatients in a German university hospital.

Participants

Seventy-three obese patients aged 7 to 15 years (mean 11.2 years) were recruited by pediatricians and local newspaper reports and randomized into intervention and control groups. Children and adolescents in each group were divided into 3 groups according to age–7-8 years, 9-10 years, and 11-13 years. Children were classified overweight (defined as body mass index (BMI) > 90th percentile for age and gender), obese (BMI > 97th percentile), and extremely obese (BMI > 99.5th percentile), according to the European Childhood Obesity Group and the German Working Group on Pediatric Obesity, congruent with adult standards used to assess overweight and obesity.

Intervention

Thirty-seven patients (age 7-13 years, mean 10.9 years) for the 1-year intervention. This intervention consisted of modules for physical activity, nutritional education, and coping strategies. The program was performed twice each week and incorporated parental participation and medical supervision, including laboratory tests. The obese controls (n = 36, age 8-15 years, mean 11.6 years) received written therapeutic advice during a visit at 0 and 6 months in the outpatient clinic.

Main Outcome Measure

The primary outcome variable was the body mass index (BMI) z score.

Analysis

Analysis of variance and t test were used, and a P value < .05 was considered significant.

Results

There was a reduction of BMI z score in the active treatment group (P < .05), but not for controls. Moreover, the active group showed beneficial effects for body mass index (BMI), fat mass, and systolic blood pressure 12 months after beginning the intervention.

Conclusions and Implications

Group-based programs for young, obese patients can be effective tools for establishing a health-oriented lifestyle and reducing the burden of obesity.

Introduction

Pediatric obesity, a serious, global health issue, may cause metabolic abnormalities such as hyperlipidemia, hypertension, impaired glucose tolerance, or even type 2 diabetes early in childhood. Moreover, because obesity commonly persists into adulthood, affected children are at greater risk of developing a variety of metabolic and cardiovascular comorbidities along with increased mortality rates.1

The development of a successful therapeutic approach for obesity in children and adolescents remains a challenge. Basic treatment options include long-term changes in lifestyle, especially eating habits and exercise behavior. The CATCH study (Child and Adolescent Trial for Cardiovascular Health) in the United States is a multiethnic school- and family-based intervention program promoting healthful meals and physical activity. However, in addition to an ethnicity effect, a significant increase in body mass index (BMI) and prevalence of obesity was found in both the intervention and control groups.2 Therefore, more specific intervention programs for smaller, homogenous cohorts could be more successful in avoiding and treating risk factors for cardiovascular disease at younger ages.

Generally, long-term effects on body weight can be achieved only if the lifestyle is profoundly modified with respect to eating behavior and physical activity. In addition to treatment, prevention of obesity in childhood must be a key strategy. Family- and school-based primary prevention strategies, such as the Kiel Obesity Prevention Study (KOPS) in Germany, for example, have been shown to facilitate changes in lifestyle and body fat content.3 It is of interest to note that obesity prevention programs are considered more effective than the treatment of adiposity.1, 4

As has been described earlier for a large cohort of 4 610 young school children (age range 5.6-7.8 years, mean age 6.7 years) in the Erlangen district in Bavaria, Germany, the prevalence of overweight and obesity in children had increased within the 5-year interval from 1996 to 2001 from 6.3% to 9.5%.5 This increase in prevalence of overweight and obesity was significant for both sexes.

The authors have, therefore, introduced a pilot concept for obese children and adolescents, of multidisciplinary design, aiming to promote an active, health-oriented lifestyle in children, adolescents, and their families. This group-based project for early obesity treatment was carried out for 1 year, followed by open lessons in a local sports club.

The objective of the present study was, firstly, to examine the feasibility and acceptability of the long-term outpatient program for obese children and adolescents. Secondly, standardized BMI values at 0, 6, and 12 months were compared, along with interim outcome data in the active intervention group, with controls who had received only written therapeutic advice at 2 outpatient visits.

Section snippets

Design

Seventy-three obese children aged 7 to 15 years (mean 11.2 years) were recruited by pediatricians and local newspaper reports and randomized into 2 groups (Table). The participants of the active intervention group joined a 1-year program, composed of modules for physical activity, nutritional education, and coping strategies, given in 2 sessions per week. There were also monthly parental meetings and medical supervision including laboratory tests at 0, 6, and 12 months. The controls received

Results

After 1 year, there was a significant reduction of BMI z score in the active group by −0.34, from +2.24 to +1.90 (P < .05), and of mean BMI (−1.5 kg/m2, P < .05) (Table). Although BMI of participants of the active group was significantly lower than BMI of controls from the beginning (P < .05), baseline values for BMI z score did not differ significantly (P = .07). Assessment of body composition by bioelectric impedance analysis (BIA) showed that fat mass at baseline did not differ significantly

Lessons Learned

Local long-term therapeutic programs for young obese patients are an important tool in establishing a more active and health-oriented lifestyle, and to reduce the individual and public burden of obesity in childhood.14 In growing children, stabilization of body weight slowly reduces BMI z score, and a value of less than 2.0, as in this project, is presumed to noticeably reduce comorbidity.1 The authors focused primarily on BMI z score in this study because BIA-derived measurements of body

Discussion

Treatment for adiposity is usually intensive and requires multidisciplinary efforts. Local community-based projects, such as the one depicted here, promote good attendance with the lowest dropout rate. They should offer lessons in strengthening self-esteem, optimizing eating habits, and increasing physical activity as major lifestyle factors affecting body weight. It has been described by other groups, also, that community-based exercise programs may be a tool to establish an active lifestyle,

Acknowledgments

This project was funded by the Bavarian State Ministry of Environment, Public Health, and Consumer Protection and the health insurance company Siemens Betriebskrankenkasse, Germany. The authors are grateful to all the patients for their participation and to our colleagues in Erlangen, Germany for their valuable contributions. We also thank Patricia Schmid for excellent technical assistance and stimulating discussion.

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This project was funded by the Bavarian State Ministry of Environment, Public Health, and Consumer Protection and the health insurance company SBK, Germany.

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