Postnatal BMI changes in children with different birthweights: A trial study for detecting early predictive factors for pediatric obesity

Abstract

Abstract.The purpose of this study was to clarify the degree of early postnatal growth by birthweight and detect early predictive factors for pediatric obesity. Body mass index (BMI) and degree of obesity were examined in children in the fourth year of elementary school and second year of junior high school. Their BMI at birth and three years of age were also examined. Based on birthweight, participants were divided into three groups: low (< 2500 g), middle (2500–3500 g), and high (> 3500 g). Furthermore, according to the degree of obesity, they were divided into two groups: obese (20% ≤) and non-obese (20% >). The change of BMI from birth to three years of age (ΔBMI) showed a strong inverse relationship with birthweight and was significantly different among the three birthweight groups (low > middle > high). The ΔBMI and BMI at three years of age were higher in obese than in non-obese children and showed significant positive correlations with the degree of obesity. Early postnatal growth might be determined by birthweight and was higher in obese than in non-obese children. The ΔBMI from birth to three years of age and BMI at age of three years could be predictive factors for pediatric obesity.

Childhood obesity: rapid weight gain in early childhood and subsequent cardiometabolic risk

“…Although infant obesity is unlikely to lead to future obesity, infants born as large for gestational age (LGA) due to maternal obesity or gestational diabetes should be considered as exceptions. These infants have difficulty losing weight during infancy, and there is a risk of infant obesity leading to early childhood obesity ( 70 , 71 ).…”

Usefulness of a salt check sheet for elementary school and junior high school children

“…The degree of obesity was calculated using the following formula: degree of obesity = (height − [standard weight by sex, age, and height])/[standard weight by sex, age, and height] × 100 (%). This formula was based on the “Evaluation of Physical Build of Japanese Children” published by the Japanese Society of Pediatric Endocrinology (standard body weight was calculated by sex, age, and height; Table ) . A student was classified as obese if his or her degree of obesity was ≥20%.…”

“…This formula was based on the "Evaluation of Physical Build of Japanese Children" published by the Japanese Society of Pediatric Endocrinology (standard body weight was calculated by sex, age, and height; Table S1). 13 A student was classified as obese if his or her degree of obesity was ≥20%.…”

Fatores relacionados ao sobrepeso de bebês aos seis meses de vida: estudo da coorte ROC, São Paulo - Brasil

“…Em nosso estudo os bebês que apresentaram maior ganho de peso foram os que nasceram com menor peso, como esperado 49,50 . A obesidade não é o único risco para estes bebês, Belford e colaboradores mostraram que o menor peso ao nascer associado ao maior ganho de peso nos primeiros seis meses de vida está relacionado a uma maior pressão arterial aos três anos de idade.…”

“…Isso sugere que mesmo para bebês com menor peso, o rápido ganho de peso nessa fase pode ser prejudicial ainda na primeira infância 24 . Ainda assim vale ressaltar que o IMC bruto na primeira infância tem relação direta com o IMC do RN como mostrado em estudo de Nakagawa e colaboradores, que demonstraram que independente do ganho de peso, os bebês que nasceram com maior peso tenderam a apresentar maior IMC aos três anos de idade 51 .…”