成人骨强度及其影响因素分析

目的调查成人骨强度，并分析其影响因素。方法选取191例健康体检成人，了解奶制品摄人量和运动状况，测定体质量、体脂含量、体质量指数（BMI）及跟骨骨强度；分析各项指标与骨强度的关系。结果男性骨强度大于女性，骨强度随年龄增长而下降，超重肥胖者骨强度高于正常体质量者（P〈0．05），奶制品高摄人量者骨强度高于低摄人量者（P〈0．05）。多因素分析显示，年龄与骨强度呈负相关，骨强度下降好发于女性人群，BMI和奶制品摄入量与骨强度呈正相关。结论性别、年龄、BMI和奶制品摄人量是影响骨强度的主要因素。骨强度随年龄增长而下降；适当增加BMI和奶制品摄入量有利于（尤其是女性人群）骨强度的增加。

Analysis of bone strength and influencing factors in adults

Objective To investigate bone strength in adults,and explore its influencing factors. Methods One hundred and ninety-one adults undergoing health examinations were selected.The questionnaires about milk intake and exercise conditions were performed,the body weight,fat mass,body mass index(BMI)and calcaneal bone strength were measured,and the relationship between each parameter and bone strength was analysed. Results Bone suength decreased with age increase,and was higher in males than that in females.Bone strength of overweight to obese adults was higher than that with normal body weight(P<0.05).Bone strength of adults with high milk intake was higher than that of those with low milk intake(P<0.05).Multivariate analysis revealed that age was negatively related to bone strength,females were more susceptible to bone strength decrease,and BMI and milk intake were positively related to bone strength. Conclusion Gender,age,BMI and milk intake are main influencing factors for bone strength.Bone strength decreases with age increase,and increase of BMI and milk intake will benefit bone strength,especially for females.