K Murakami1, Y Miyake, S Sasaki, K Tanaka, M Arakawa. 1. Department of Social and Preventive Epidemiology, School of Public Health, University of Tokyo, Tokyo, Japan. kenmrkm@m.u-tokyo.ac.jp
Abstract
OBJECTIVE: Epidemiologic evidence concerning the role of dietary glycemic index (GI) and glycemic load (GL) in obesity during childhood and adolescence is limited, particularly in non-Western populations. We examined the association between dietary GI and GL as well as dietary fiber intake and overweight status in Japanese children and adolescents. SUBJECTS: This Japanese cross-sectional study included 15,974 children (6-11 years; 7956 boys and 8018 girls) and 8202 adolescents (12-15 years; 3944 boys and 4258 girls). METHODS: Dietary intake was assessed using a self-administered diet history questionnaire for children and adolescents. Body mass index (BMI) was calculated from self-reported body weight and height. Overweight was defined according to the International Obesity Task Force age- and sex-specific BMI cutoffs, which correspond to an adult BMI of 25 kg m(-2). RESULTS: The overall prevalence of overweight was 13.2%. Mean (s.d.) dietary GI was 63.0 (3.1), mean dietary GL was 85.0 (12.4) per 4184 kJ (1000 kcal) and mean dietary fiber intake was 5.9 (1.2) g/4184 kJ. After adjustment for potential confounding factors, dietary GL was positively associated with the risk of overweight in male children, female children and male adolescents (P for trend <0.0001, <0.0001 and 0.006, respectively), but not in female adolescents. No such independent associations were observed for dietary GI or fiber intake. CONCLUSION: This large cross-sectional study in Japan suggests that higher dietary GL is associated with increasing risk of overweight in male and female children and male adolescents, but not female adolescents.
OBJECTIVE: Epidemiologic evidence concerning the role of dietary glycemic index (GI) and glycemic load (GL) in obesity during childhood and adolescence is limited, particularly in non-Western populations. We examined the association between dietary GI and GL as well as dietary fiber intake and overweight status in Japanese children and adolescents. SUBJECTS: This Japanese cross-sectional study included 15,974 children (6-11 years; 7956 boys and 8018 girls) and 8202 adolescents (12-15 years; 3944 boys and 4258 girls). METHODS: Dietary intake was assessed using a self-administered diet history questionnaire for children and adolescents. Body mass index (BMI) was calculated from self-reported body weight and height. Overweight was defined according to the International Obesity Task Force age- and sex-specific BMI cutoffs, which correspond to an adult BMI of 25 kg m(-2). RESULTS: The overall prevalence of overweight was 13.2%. Mean (s.d.) dietary GI was 63.0 (3.1), mean dietary GL was 85.0 (12.4) per 4184 kJ (1000 kcal) and mean dietary fiber intake was 5.9 (1.2) g/4184 kJ. After adjustment for potential confounding factors, dietary GL was positively associated with the risk of overweight in male children, female children and male adolescents (P for trend <0.0001, <0.0001 and 0.006, respectively), but not in female adolescents. No such independent associations were observed for dietary GI or fiber intake. CONCLUSION: This large cross-sectional study in Japan suggests that higher dietary GL is associated with increasing risk of overweight in male and female children and male adolescents, but not female adolescents.
Authors: K Murakami; T A McCaffrey; A M Gallagher; C E Neville; C A Boreham; M B E Livingstone Journal: Int J Obes (Lond) Date: 2013-05-03 Impact factor: 5.095
Authors: Yi Lin; Inge Huybrechts; Carine Vereecken; Theodora Mouratidou; Jara Valtueña; Mathilde Kersting; Marcela González-Gross; Selin Bolca; Julia Wärnberg; Magdalena Cuenca-García; Frederic Gottrand; Elisabetta Toti; Sonia Gomez-Martínez; Evangelia Grammatikaki; Idoia Labayen; Luis A Moreno; Michael Sjöström; John Van Camp; Romana Roccaldo; Emma Patterson; Yannis Manios; Denes Molnar; Anthony Kafatos; Kurt Widhalm; Stefaan De Henauw Journal: Eur J Nutr Date: 2014-08-17 Impact factor: 5.614