Journal List > J Nutr Health > v.50(4) > 1081510

J Nutr Health. 2017 Aug;50(4):336-349. Korean.
Published online August 31, 2017.  https://doi.org/10.4163/jnh.2017.50.4.336
© 2017 The Korean Nutrition Society
Changes in weight, waist circumference, prevalence of obesity, and dietary factors associated with weight gain over 8 years in Korean adults: Longitudinal data from the Korean Genome and Epidemiology Study
Im Huei Son, Young Hee Han and Taisun Hyun
Department of Food and Nutrition, Chungbuk National University, Cheongju 28644, Korea.

To whom correspondence should be addressed. tel: +82-43-261-2790, Email: taisun@chungbuk.ac.kr
Received July 25, 2017; Revised August 07, 2017; Accepted August 22, 2017.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Abstract

Purpose

The purposes of this study were to describe changes in weight, waist circumference (WC), and prevalence of obesity over 8 years as well as investigate demographic and dietary factors associated with weight gain in Korean adults.

Methods

The Korean Genome and Epidemiology Study is an ongoing community-based longitudinal study, which was started in 2001~2002 and repeated every 2 years. Height, weight, and WC were measured, and demographic data and food intake information using the food frequency questionnaire were collected from 10,038 adults aged 40~69 years at baseline. Among those individuals, 3,506 healthy individuals without chronic diseases completed the 4th follow-up survey in 2009~2010.

Results

Mean weight decreased by 0.35 kg and 0.65 kg in men and women, respectively, whereas mean WC increased by 1.71 cm and 1.85 cm during the 8-year period. Prevalence of obesity based on body mass index (BMI) decreased from 34.5% to 33.5% in men and from 38.0% to 36.7% in women, whereas abdominal obesity increased from 14.8% to 22.2% in men and from 28.8% to 35.4% in women. Weight change was associated with age and smoking status in men, and residence area, age, education, income, and alcohol drinking in women. Approximately 57.5% maintained their BMI over 8 years (< ±1 kg/m2, stable weight group), 19.5% showed a BMI increase of ≥ 1 kg/m2 (weight gain group), and 23.0% showed a BMI decrease of more than 1 kg/m2 (weight loss group). There was no significant difference in energy intake calculated as the percentage of estimated energy requirements among the three weight change groups. Intakes of coffee mix and milk were significantly higher in the weight gain group than in the weight loss group in men after controlling for confounding factors.

Conclusion

Our results show that higher consumption of coffee mix and milk was associated with weight gain in Korean healthy men.

Keywords: weight gain; body mass index; obesity; coffee mix; longitudinal study

Figures


Fig. 1
Flow diagram of participant selection for analysis
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Fig. 2
Changes in the percentages of obesity categories and abdominal obesity over 8 years
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Fig. 3
Changes in mean weight, waist circumference and body mass index by age groups over 8 years
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Tables


Table 1
Characteristics of the study population at baseline
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Table 2
Anthropometric measurements and prevalence of obesity at baseline and at 8-year follow-up
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Table 3
Changes in weight and waist circumference over 8 years by general characteristics at baseline
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Table 4
Anthropomeric changes over 8 years in the three groups classified based on weight changes
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Table 5
Mean energy intake and nutrient adequacy ratio (NAR) of selected nutrients at baseline
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Table 6
Mean intake of selected sugar containing foods and beverages at baseline
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Notes

This work was supported by the research grant of the Chungbuk National University in 2014. Data in this study were from the Korean Genome and Epidemiology Study (KoGES; 4851-302).

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