Van Loan M D, Keim N L
US Department of Agriculture, Agricultural Research Service Western Human Nutrition Research Center, Davis, CA 95616, USA.
Am J Clin Nutr. 2000 Sep;72(3):837-43. doi: 10.1093/ajcn/72.3.837.
We examined the relation between cognitive eating restraint (CER) and total-body measurements of bone mineral density (BMD) and bone mineral content (BMC).
Our objective was to determine whether women with CER had lower total-body BMD and BMC than did other women.
Premenopausal women, 90-150% of ideal weight, had measurements of their BMD and BMC made and completed questionnaires on physical activity, weight history, body size satisfaction, dieting history, eating behavior, and childbearing history. Bone measurements were examined for differences between groups with low and high CER scores by using analysis of covariance and quartiles of body weight to adjust for body size differences. CER was assessed by using the Three-Factor Eating Inventory and was defined as a score > or =9; normal eating restraint (NER) was defined by a score <9. Total-body BMC, BMD, and fat and lean masses were measured by dual-energy X-ray absorptiometry.
Fifty-two percent of the women were classified as having CER. Women with CER were significantly more dissatisfied with their bodies. Analysis of covariance, with weight as the covariate, indicated a significant difference in BMC between women in preplanned pairs from the 5 lowest and 5 highest CER levels. No significant differences in BMD were observed between groups. Significantly lower BMC was found in women with high CER scores and body weights <71 kg than in those with high CER scores and weights > or =71 kg.
BMC was significantly differently between women with low and high CER scores. BMC was significantly lower in women with body weights <71 kg and classified with CER. Lower BMC in women with high CER scores may indicate an increased risk of osteoporosis.
我们研究了认知性饮食抑制（CER）与全身骨矿物质密度（BMD）和骨矿物质含量（BMC）测量值之间的关系。
我们的目的是确定患有CER的女性的全身BMD和BMC是否低于其他女性。
体重为理想体重90 - 150%的绝经前女性进行了BMD和BMC测量，并完成了关于身体活动、体重史、身体尺寸满意度、节食史、饮食行为和生育史的问卷调查。通过协方差分析和体重四分位数来调整身体尺寸差异，以检查低CER分数组和高CER分数组之间的骨测量差异。使用三因素饮食量表评估CER，将得分≥9定义为CER；正常饮食抑制（NER）定义为得分<9。通过双能X线吸收法测量全身BMC、BMD以及脂肪和瘦体重。
52%的女性被归类为患有CER。患有CER的女性对自己身体的不满程度明显更高。以体重为协变量的协方差分析表明，在预先计划的CER水平最低的5组和最高的5组女性中，BMC存在显著差异。两组之间未观察到BMD有显著差异。CER得分高且体重<71 kg的女性的BMC显著低于CER得分高且体重≥71 kg的女性。
CER得分低和高的女性之间BMC存在显著差异。体重<71 kg且被归类为CER的女性的BMC显著更低。CER得分高的女性BMC较低可能表明骨质疏松风险增加。
