Reductions in the Energy Content of Meals Served in the Chilean National Nursery School Council Program Did Not Consistently Decrease Obesity among Beneficiaries  

Oleh:

Corvalan, Camila ; Uauy, Ricardo ; Flores, Rafael ; Kleinbaum, David G. ; Martorell, Reynaldo

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: JN: The Journal of Nutrition vol. 138 no. 11 (Nov. 2008), page 2237.
Topik: Community and International Nutrition

Ketersediaan

Perpustakaan FK Nomor Panggil: J42.K.2008.02 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

In 2001, the Chilean National Nursery Schools Council Program reduced by 10% the energy content (~418.7 kJ) of meals served to children to reduce obesity. We assessed the impact of this measure on obesity and stunting among beneficiaries 2–5 y old. The energy reduction was staggered over 3 y, allowing for a quasi-experimental design involving early (2001), mid (2002), and late (2003) intervention groups. Routine anthropometric measurements (~64,000/y) taken from 1996–2005 were obtained from registries; obesity (BMI-for-age Z-score =2 SD) and stunting (height-for-age Z-score =2 SD) were defined using the 2006 growth standards. Segmented regression analyses were conducted by intervention group to contrast pre- and postintervention trends. Overall, obesity was high (15.9%), with levels consistently higher in fall and winter as reported in other studies. Preintervention obesity trends increased in the early group (P = 0.001) but decreased in the late intervention group (P = 0.02). The impact of the energy reduction on obesity was inconsistent, with reductions in the early group (P < 0.01) but with no change in mid and late intervention groups (P > 0.05). Stunting prevalence was almost as low as in the growth standard (3.2 vs. 2.3%) and decreased preintervention in all groups (P < 0.05). Stunting prevalence increased postintervention (P < 0.05) in all but the late intervention group, where there was no change. Despite a robust design and the ability to detect small seasonal changes in obesity, our analyses showed that the 10% energy reduction did not consistently decrease obesity. The intervention may have slowed improvements in linear growth, but concern is tempered by the near absence of growth failure.

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