Ming-Zhe Yang1,2, Hong-Mei Xue1, Jay Pan3, Lars Libuda4,5, Rebecca Muckelbauer6, Min Yang7, Liming Quan8, Guo Cheng9. 1. Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, No.16, Section 3, Renmin Nan Road, Chengdu, 610041, Sichuan, People's Republic of China. 2. Nutrition and Health Research Center, BY-HEALTH CO., LTD, No. 3 Kehui 3rd Street, No.99 Kexue Avenue Central, Huangpu District, Guangzhou, 510663, Guangdong, People's Republic of China. 3. Department of Epidemiology and Statistic, West China School of Public Health, Sichuan University, No.16, Section 3, Renmin Nan Road, Chengdu, 610041, Sichuan, People's Republic of China. 4. Department of Child and Adolescent Psychiatry, University Hospital Essen, University of Duisburg-Essen, Essen, Germany. 5. Department of Pediatrics, Research Institute for the Prevention of Allergies and Respiratory Diseases in Childhood, Marien-Hospital Wesel, Wesel, Germany. 6. Berlin School of Public Health, Charité-Universitätsmedizin, Berlin, Germany. 7. West China Research Center for Rural Health Development, Huaxi Medical Center, Sichuan University, No.16, Section 3, Renmin Nan Road, Chengdu, 610041, Sichuan, People's Republic of China. 8. Office of Scientific Research Management, West China School of Public Health, Sichuan University, No.16, Section 3, Renmin Nan Road, Chengdu, 610041, Sichuan, People's Republic of China. 9. Department of Nutrition, Food Safety and Toxicology, West China School of Public Health, Sichuan University, No.16, Section 3, Renmin Nan Road, Chengdu, 610041, Sichuan, People's Republic of China. gcheng@scu.edu.cn.
Abstract
PURPOSE: Protein intake has been suggested to be associated with body composition among western children. Our aim was to determine whether protein intake is associated with body composition among Chinese children and to investigate whether parental socioeconomic status modifies these associations. METHODS: Cross-sectional data were collected from the baseline survey of an ongoing population-based prospective open cohort study conducted in 2013. In this survey, 2039 children in South China were recruited using cluster random sampling. Information of 1704 children (47% girls), aged 7-12 years from three primary schools (42 classes), on diet and anthropometry was included finally. Their daily protein intake was obtained by 3-day 24-h dietary recalls. Skinfold thickness, body height, and weight were measured to calculate percent body fat (%BF), fat mass index (FMI), and fat-free mass index (FFMI). Parental characteristics were collected by questionnaires. RESULTS: Among girls, protein intake was positively associated with %BF and FMI [estimate (SE) for %BF: 0.007 (0.003), p = 0.04; for FMI: 0.092 (0.002), p = 0.03], adjusted for pubertal stage, breast-feeding, maternal overweight, carbohydrate intake, energy intake, and physical activity level. Furthermore, there was interaction between paternal occupation and the relations of dietary protein with %BF and FMI (p for interaction ≤ 0.04). None of the associations between protein intake and %BF, FMI, or FFMI was found among boys. CONCLUSIONS: Our data indicate that school-aged girls, but not boys, living in South China with higher dietary protein intake might have higher body fat mass, which could be modified by paternal occupation.
PURPOSE: Protein intake has been suggested to be associated with body composition among western children. Our aim was to determine whether protein intake is associated with body composition among Chinese children and to investigate whether parental socioeconomic status modifies these associations. METHODS: Cross-sectional data were collected from the baseline survey of an ongoing population-based prospective open cohort study conducted in 2013. In this survey, 2039 children in South China were recruited using cluster random sampling. Information of 1704 children (47% girls), aged 7-12 years from three primary schools (42 classes), on diet and anthropometry was included finally. Their daily protein intake was obtained by 3-day 24-h dietary recalls. Skinfold thickness, body height, and weight were measured to calculate percent body fat (%BF), fat mass index (FMI), and fat-free mass index (FFMI). Parental characteristics were collected by questionnaires. RESULTS: Among girls, protein intake was positively associated with %BF and FMI [estimate (SE) for %BF: 0.007 (0.003), p = 0.04; for FMI: 0.092 (0.002), p = 0.03], adjusted for pubertal stage, breast-feeding, maternal overweight, carbohydrate intake, energy intake, and physical activity level. Furthermore, there was interaction between paternal occupation and the relations of dietary protein with %BF and FMI (p for interaction ≤ 0.04). None of the associations between protein intake and %BF, FMI, or FFMI was found among boys. CONCLUSIONS: Our data indicate that school-aged girls, but not boys, living in South China with higher dietary protein intake might have higher body fat mass, which could be modified by paternal occupation.
Entities:
Keywords:
Body composition; Children; Dietary protein; Paternal occupation
Authors: Melanie Schorr; Elizabeth A Lawson; Laura E Dichtel; Anne Klibanski; Karen K Miller Journal: J Clin Endocrinol Metab Date: 2015-07-14 Impact factor: 5.958