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为描述农村妇女前臂近端及远端骨密度的年龄分布及可能的环境危险因素 ,用问卷收集 1432位15岁及以上农村妇女的一般人口学特征、生活习惯及饮食情况等资料 ,运用末梢双能X线吸收骨密度仪(pDEXA)测量前臂近端及远端骨密度。结果前臂远端骨密度在 2 5岁前、前臂近端骨密度在 30岁前随年龄的增加而增高 ,两者均在 30～ 35岁达到峰值。前者自 40岁、后者自 45岁骨密度值出现显著性降低 ,骨量年丢失率均在 5 0岁左右明显增加 ,在 5 5～ 6 0岁达到骨丢失高峰。在该人群中 ,年龄仅对前臂近端骨密度有影响 ;绝经年限是影响 45～ 6 0岁人群两种骨密度减低的主要原因 ,但对前臂远端骨密度的影响更为显著 ;体重是 6 0岁前女性骨密度的共同促进因素 ;身高对骨密度的正性作用仅对 30岁年龄组的前臂近端有影响 ;此外 ,生育次数、饮茶史、受教育程度对某些年龄段前臂远端骨密度有影响 ;而产次、服避孕药史、职业、受教育程度及婚姻状况对某些年龄段前臂近端骨密度有一定的影响。本研究未发现吸烟、饮酒对骨密度有影响。提示在不同的年龄段及骨部位 ,骨密度的环境危险因素有所不同。预防低骨密度要因研究对象的年龄、生活条件及体力活动进行调整 ,以监测松质骨骨密度为主
To describe the age distribution and possible environmental risk factors of proximal and distal forearm forearm of rural women, questionnaires were used to collect data on the general demographic characteristics, living habits and diet of 1432 rural women aged 15 and above. X-ray absorptiometry (pDEXA) was used to measure proximal and distal forearm bone mineral density. Results Forearm Bone Mineral Density Before 25 years of age, the proximal forearm bone mineral density increased with age at the age of 30, both of which peaked at 30-35 years of age. The former from the age of 40, the latter since the 45-year-old bone mineral density value decreased significantly, the annual loss rate of bone mass were significantly increased in the age of 50, reached the peak of bone loss in 55 ~ 60 years old. In this population, age had only an effect on the proximal forearm bone mineral density; menopause was the major cause of both bone mineral density reductions in 45-60 years of age but had more pronounced effects on distal forearm bone mineral density; body weight was The positive effect of body height on bone mineral density was only contributed to the proximal forearm of the 30-year-old group. In addition, the number of births, the history of drinking tea, and the level of education for some age groups Forearm distal bone density impact; and parity, history of contraceptives, occupation, education and marital status of the proximal forearm bone density in some age groups have a certain impact. This study found no smoking, drinking on bone density. Prompted in different age groups and bone sites, bone mineral density of environmental risk factors are different. The prevention of low BMD should be adjusted based on the age, living conditions and physical activity of the study subjects to monitor cancellous bone mineral density