Authors: Wankyo Chung Jongseok Lee OhkHyun Ryu
Publish Date: 2013/10/11
Volume: 32, Issue: 5, Pages: 505-513
Abstract
Obesity and osteoporosis are two important body composition problems with increasing prevalences in aged populations Traditionally obesity has been regarded as being beneficial to bone health However the protective effect of obesity on osteoporosis has been questioned In some recent studies obesity as defined by percentage body fat was regarded as a risk factor for osteoporosis The purpose of this study was to 1 evaluate the effect of waist circumference a surrogate measure for abdominal obesity on bone mineral content BMC and 2 examine whether the effect of waist circumference increases with advancing age The study population is made up of women aged over 45 years who completed the body composition and bone mineral density examinations in the fifth Korea National Health and Nutrition Examination Survey in 2010 Subjects who take estrogen or are under medical treatment for osteoporosis were excluded Stroke patients are also excluded Femoral neck totalhip and wholebody BMC were measured by dualenergy Xray absorptiometry A total of 1434 subjects were included in the analysis Waist circumference was negatively associated with BMC in all tested regions after correction for weight menopausal status smoking drinking and exercise In addition the negative association between waist circumference and BMC in the femoral neck and total hip increases with age after correction for confounding factors showing an interaction effect between waist circumference and age on BMC In conclusion this study shows that the negative relationship between waist circumference and BMC in the femoral neck and total hip is greater for older women
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