: Obesity in children has become a major global public health concern. The prevention of obesity must start from early childhood in order to establish sound lifestyle habits and promote healthy adulthood. In this study, we evaluated factors associated with the prevention of obesity and the development of healthy lifestyle habits in children. A cross-sectional, questionnaire-based survey was performed in elementary and junior high school students in Tokushima Prefecture, Japan, during the summer of 2004. The questionnaire consisted of 30 items such as physique, sleep, eating habits, diet, exercise, free time, and attending after-school lessons. Our study revealed that eating meals as a family every day is associated with a lower rate of obesity as well as getting good lifestyle habits such as eating balanced meals and getting enough sleep. Of the 3,291 students who responded to the questionnaire, 2,688 (81.7% %) reported that they eat meals with their family every day. The percentage of students who eat meals with their family every day decreased with increasing school grade, with the lowest percent in the junior high school students. However, the results regarding female junior high school students revealed a marked association between eating meals with the family every day and good lifestyle habits. We recommend that parents and school teaching staff encourage the establishment of sound, healthy lifestyle habits in children from early childhood as an effective measure for the prevention of obesity. J. Med. Invest. 55 : 71-77, February, 2008
Childhood overweight/obesity is growing steeply, globally. It is usually regarded as a risk factor for severe obesity over life-time course. Here, we investigated temporal course of overweight/obesity development in Japanese school children. A six-year longitudinal study was performed on 16,245 Japanese primary school children (8,427 boys and 7,818 girls) comprising three cohorts of 1(st) approximately 3(rd) grade. A baseline survey was conducted at 2001, followed by annual baseline studies from 2002 approximately 2007 to determine the prevalence and track overweight/obesity. Our results showed that the prevalence of overweight was 15 approximately 23% in boys and 15 approximately 18% in girls, however, for obesity it ranged between 4 approximately 7% in boys; and 2 approximately 4% in girls. As regards for tracking status, 60 approximately 80% of overweight and 35 approximately 70% of obese Japanese primary school boys track into overweight or obese junior high school adolescents. However, these percentages are lower among primary school girls, where only 50 approximately 70% overweight and 30 approximately 60% obese primary school girls track into overweight and obese adolescents, respectively. We conclude that Japanese boys are fatter than girls; and approximately 80% of overweight/obese Japanese primary school children track into junior high school overweight/obese adolescents.
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