Changes in dietary habits and BMI z-score after a 6-month non-randomized cluster-controlled trial among 6–12 years old overweight and obese Norwegian children

Tonje Holte Stea; Mario Vianna Vettore; Bente Øvrebø; Eirik Abildsnes

doi:10.29219/fnr.v67.9617

Tonje Holte Stea Department of Health and Nursing Science, University of Agder, Kristiansand, Norway
Mario Vianna Vettore Department of Health and Nursing Science, University of Agder, Kristiansand, Norway
Bente Øvrebø Department of Health and Inequalities, Norwegian Institute of Public Health, Oslo, Norway
Eirik Abildsnes Department of Psychosocial Health, University of Agder, Grimstad, Norway

DOI: https://doi.org/10.29219/fnr.v67.9617

Keywords: overweight, obesity, children, family involvement, dietary intervention

Abstract

Background: Effective prevention programs to address the high prevalence of childhood overweight and obesity and the concomitant health consequences have been warranted.

Objective: To improve dietary habits and weight status among Norwegian children with overweight/obesity in the primary care setting.

Design: A 6-month non-randomized cluster-controlled intervention among 137 children, aged 6–12 years, with overweight/obesity and their parents. Intervention and control groups were recruited by public health nurses and followed-up by 12 Healthy Life Centers across Norway. The intervention group received individual family counseling and participated in nutrition courses and physical activity groups. A frequency questionnaire assessing sociodemographic characteristics and dietary habits was completed by the parents. Trained public health nurses measured height and weight using standardized methods to calculate body mass index (BMI) and BMI z-scores.

Results: The intervention resulted in an increased odds of consuming evening meals (OR: 3.42), a decreased availability of salty snacks (β = –0.17), a decreased intake of salty snacks (−0.18), an increased consumption of water (β = 0.20), and a decreased estimated total intake of energy (β = –0.17), carbohydrates (β = –0.17), mono- and disaccharides (β = –0.21), sucrose (β = –0.24), and saturated fatty acids (β = –0.17). The intervention directly predicted lower BMI z-score (β = –0.17), and post-treatment levels of energy (β = –0.65), saturated fat (β = 0.43), and total carbohydrates (β = 0.41) were directly linked to BMI z-score after intervention. Age and sex were indirectly associated with BMI after intervention through energy and saturated fat intake.

Conclusions: The intervention had a beneficial impact on nutrient intake and weight status among children with overweight/obesity. These findings provide support for implementing complex intervention programs tailored to local primary care settings.

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