Department of Medical Statistics & Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, People's Republic of China.
Public Health Nutr. 2013 Jan;16(1):78-86. doi: 10.1017/S1368980012001127. Epub 2012 Apr 17.
Previous studies showed an inconsistent association of fruit and vegetable consumption with bone health. We assessed the associations in Chinese adolescents, young and postmenopausal women.
A cross-sectional study conducted in China during July 2009 to May 2010.
Bone mineral density (BMD) and content (BMC) at the whole body, lumbar spine and left hip were measured with dual-energy X-ray absorptiometry. Dietary intakes were assessed using an FFQ. All these values were separately standardized into Z-scores in each population subgroup.
One hundred and ten boys and 112 girls (11-14 years), 371 young women (20-34 years, postpartum within 2 weeks) and 333 postmenopausal women (50-70 years).
After adjustment for potential covariates, analysis of covariance showed a significantly positive association between fruit intake and BMD and BMC in all participants combined (P-trend: < 0.001 to 0.002). BMD Z-score increased by 0.25 (or 2.1 % of the mean), 0.22 (3.5 %), 0.23 (3.0 %) and 0.25 (3.5 %), and BMC Z-score increased by 0.33 (5.7 %), 0.25 (5.8 %), 0.34 (5.9 %) and 0.29 (4.7 %), at the total body, lumbar spine, total hip and femoral neck in participants belonging to the top tertile compared with the bottom tertile of fruit intake (all P < 0.05), respectively. There was no significant association between vegetable intake and bone mass at all bone sites studied except for total body BMD (P = 0.030). Relatively more pronounced effects were observed in boys and postmenopausal women.
Our findings add to the existing evidence that fruits and vegetables may have a bone sparing effect.
以往的研究表明，水果和蔬菜的摄入量与骨骼健康之间的关系并不一致。我们评估了中国青少年、年轻和绝经后妇女中的这种相关性。
2009 年 7 月至 2010 年 5 月在中国进行的一项横断面研究。
全身、腰椎和左侧髋部的骨矿物质密度（BMD）和含量（BMC）采用双能 X 线吸收法测量。采用 FFQ 评估膳食摄入量。所有这些值均在每个人群亚组中分别标准化为 Z 分数。
110 名男孩和 112 名女孩（11-14 岁）、371 名年轻女性（20-34 岁，产后 2 周内）和 333 名绝经后妇女（50-70 岁）。
在调整了潜在的混杂因素后，协方差分析显示，水果摄入量与所有参与者的 BMD 和 BMC 呈显著正相关（P 趋势：<0.001 至 0.002）。BMD Z 评分增加了 0.25（或平均的 2.1%）、0.22（3.5%）、0.23（3.0%）和 0.25（3.5%），BMC Z 评分增加了 0.33（5.7%）、0.25（5.8%）、0.34（5.9%）和 0.29（4.7%），分别在水果摄入量最高三分位组与最低三分位组相比，在全身、腰椎、全髋和股骨颈的所有参与者中（均 P<0.05）。除了全身 BMD（P=0.030）外，蔬菜摄入量与所有研究部位的骨量均无显著相关性。在男孩和绝经后妇女中观察到的影响更为显著。
我们的研究结果为现有的水果和蔬菜可能具有保护骨骼的作用提供了更多的证据。
