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KMID : 0191120170320101633
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Journal of Korean Medical Science
2017 Volume.32 No. 10 p.1633 ~ p.1641
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The Role of Overweight and Obesity on Bone Health in Korean Adolescents with a Focus on Lean and Fat Mass
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Kim Hwa-Young
Jung Hae-Woon
Hong Hyun-Sook
Kim Jae-Hyun
Shin Choong-Ho
Yang Sei-Won
Lee Young-Ah
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Abstract
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As the associations between pediatric overweight/obesity and bone health remain controversial, we investigated the effects of overweight/obesity as well as lean mass (LM) and fat mass (FM) on bone parameters in adolescents. Bone parameters were evaluated using dual-energy X-ray absorptiometry (DXA) data of 982 adolescents (aged 12?19 years) from the Korea National Health and Nutrition Examination Survey (2009?2010). Z-scores for LM, FM, bone mass, bone mineral density (BMD), and bone mineral apparent density (BMAD) using Korean pediatric reference values were used for analysis. Adolescents with overweight/obesity had significantly higher bone mass and density of the total-body-less-head (TBLH), lumbar spine, and femur neck than underweight or normal-weight adolescents (P < 0.001) after adjusting for vitamin D deficiency, calcium intake, and insulin resistance in both sexes. LM was positively associated with bone parameters at all skeletal sites in both sexes (P < 0.001). FM was negatively related to TBLH BMD in boys (P = 0.018) but was positively associated to BMD and BMAD of the lumbar spine and femur neck in girls. In conclusion, overweight/obesity and LM play a positive role in bone health in adolescents. The effect of FM on bone parameters is sex- and site-specific.
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KEYWORD
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Pediatric Obesity, Body Composition, Bone Density, Adolescent, Korea
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