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Dietary protein in relation to bone stiffness index and fat-free mass in a population consuming relatively low protein diets

 Sun Min Oh  ;  Hyeon Chang Kim  ;  Yumie Rhee  ;  Seon-Joo Park  ;  Hae-Jeung Lee  ;  Il Suh  ;  Diane Feskanich 
 Journal of Bone and Mineral Metabolism, Vol.31(4) : 433-441, 2013 
Journal Title
 Journal of Bone and Mineral Metabolism 
Issue Date
Adiposity/drug effects* ; Adult ; Aged ; Biomechanical Phenomena/drug effects ; Bone and Bones/drug effects* ; Bone and Bones/physiology* ; Diet, Protein-Restricted* ; Dietary Proteins/pharmacology* ; Female ; Humans ; Male ; Middle Aged ; Multivariate Analysis
Bone density ; Body composition ; Fat-free mass ; Dietary proteins ; Meat protein
Dietary protein has a mixed effect on skeletal health and the effect may differ by amount or source of protein. The purpose of this study was to investigate dietary protein in relation to bone density and fat-free mass in rural Korean residents consuming relatively low protein diets. Between 2008 and 2010, 3,330 participants were recruited for a baseline examination of a community-based study in Kangwha. Of those, 1,182 men and 1,393 postmenopausal women were eligible for the present study. Diet was assessed using a food-frequency questionnaire developed for Korean adults. Calcaneal bone density measured by ultrasound was expressed as the stiffness index (SI). Fat-free mass index (FFMI) was defined as fat-free mass in kilograms divided by the height in meters squared. The mean ages of men and women were 59.5 and 60.0 years, respectively. The median daily intakes of total and meat protein were 52.3 and 6.7 g in men and 45.0 and 3.0 g in women, respectively. After controlling for potential confounders, SI and FFMI showed an increasing trend with a higher meat protein intake in men (P for trend = 0.017 and 0.033, respectively), but not in women. No positive association was observed for other food sources of protein. In conclusion, our findings suggest that meat protein contributes to skeletal health in men consuming relatively low protein diets.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hyeon Chang(김현창) ORCID logo https://orcid.org/0000-0001-7867-1240
Suh, Il(서일) ORCID logo https://orcid.org/0000-0002-9689-7849
Oh, Sun Min(오선민)
Rhee, Yumie(이유미) ORCID logo https://orcid.org/0000-0003-4227-5638
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