论文部分内容阅读
目的检验绝经后妇女体力活动(PA)总量及不同强度PA与骨密度(BMD)和骨盐含量(BMC)的关联。方法从广州市社区招募315名50～70岁停经妇女。通过面对面访问调查其日常PA情况及一般情况和膳食情况等相关协变量。采用双能X-光骨密度仪检测全身、腰椎(L1-L4)及左侧股骨(总股骨、股骨颈、大粗隆、股骨干和Wards区)的BMD和BMC。结果以PA能量代谢当量(MET值)进行三等分位法分组,协方差分析结果显示总体上各部位BMD和BMC随PA总量增加而呈增高的趋势。PA总量低、中、高水平组全身BMD的均值(SE)分别为(1.045±0.008),(1.043±0.008),(1.068±0.008)g/cm2,高PA组显著高于低和中PA组(P=0.049和0.028)。其他部位BMD在三组间无统计学差异意义(P>0.05)。高PA组总股骨、股骨颈、股骨干和Wards区的BMC显著高于低PA组(P=0.004～0.042)。不同强度PA对BMD影响不同,低强度PA越少、中等强度PA越多以及适量的高强度PA均增加BMD。结论较高的PA水平,尤其是增加中等强度和适量的高强度PA更有利于绝经后妇女的骨质健康。
Objective To examine the relationship between total physical activity (PA) and PA, BMD and BMC in postmenopausal women. Methods Recruited 315 women aged 50 ~ 70 years old from Guangzhou community. Through face-to-face interview, investigate their daily PA status and related covariates such as general situation and diet. Whole body, lumbar vertebrae (L1-L4) and left femur (total femur, femoral neck, greater trochanter, femoral shaft and Wards area) were examined for BMD and BMC using dual energy X-ray absorptiometry. The results were divided into three quartiles by PA energy metabolism equivalent (MET value). The results of covariance analysis showed that BMD and BMC of each part showed an overall trend of increasing with the increase of total PA. The mean (SE) of systemic BMD was (1.045 ± 0.008), (1.043 ± 0.008) and (1.068 ± 0.008) g / cm2, respectively, in patients with low, medium and high PA levels Group (P = 0.049 and 0.028). There was no significant difference in BMD among other three groups (P> 0.05). The BMCs of the total femur, femoral neck, femoral shaft and Wards in high PA group were significantly higher than those in low PA group (P = 0.004-0.042). Different intensity of PA on the impact of different BMD, low intensity PA less, more moderate intensity PA and moderate intensity PA increased BMD. Conclusions Higher PA levels, especially those with moderate and moderate levels of PA, are more beneficial to bone health in postmenopausal women.