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首页> 外文期刊>Osteoporosis international: a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA >Associations between physical activity and bone structure in older adults: does the use of self-reported versus objective assessments of physical activity influence the relationship?
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Associations between physical activity and bone structure in older adults: does the use of self-reported versus objective assessments of physical activity influence the relationship?

机译：老年人身体活动与骨骼结构之间的关联：使用自我报告的与客观评估的身体活动会影响关系吗？

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Associations of current and previous physical activity (PA) with bone health are unclear. In postmenopausal women with low bone mineral density (BMD), current PA was positively associated with femoral neck BMD and microarchitecture. Past PA was positively associated with tibial microarchitecture. PA appears beneficial for bone health throughout the lifespan. Introduction To compare associations of current and past self-reported bone-specific physical activity, and current accelerometer-determined physical activity (PA), with bone structure (bone mineral density [BMD] and microarchitecture) in postmenopausal women with osteopenia or osteoporosis. Methods Fifty community-dwelling postmenopausal women (mean age 64.4 +/- 7.7) with hip or spine BMD T-score < - 1.0 SD were recruited for an exercise intervention. At baseline, current, past and total Bone-specific Physical Questionnaire (BPAQ) scores were self-reported, and percentages of sedentary, light and moderate to vigorous PA (MVPA) were objectively determined by accelerometer measurements. Bone structure was assessed by lumbar spine and hip dual-energy X-ray absorptiometry (DXA), 3D modelling algorithms (3D-SHAPER) of hip DXA scans and distal tibial high-resolution peripheral quantitative computed tomography (HR-pQCT) scans. Results Current BPAQ scores and MVPA were significantly positively associated with femoral neck areal BMD (beta = 0.315, p = 0.031 and beta = 0.311, p = 0.042, respectively) following multivariable adjustments. MVPA was also positively associated with femoral cortical surface BMD (beta = 0.333, p = 0.028) and mean cortical thickness (beta = 0.374, p = 0.013). Past and total BPAQ scores demonstrated positive associations with tibial trabecular number (beta = 0.391, p = 0.008 and beta = 0.381, p = 0.010, respectively), and negative associations with trabecular separation (beta = - 0.396, p = 0.006 and beta = - 0.380, p = 0.009, respectively) and distribution (beta = - 0.411, p = 0.004 and beta = - 0.396, p = 0.006, respectively). Current BPAQ score was positively associated with tibial cortical periosteal perimeter (beta = 0.278, p = 0.014). Conclusion BPAQ scores were most consistently associated with tibial bone parameters in older women, with past PA having lasting benefits for trabecular microarchitecture, and current PA positively associated with cortical bone.
机译：具有骨骼健康的当前和以前的身体活动（PA）的关联尚不清楚。在低骨矿物密度（BMD）的绝经后血液中，目前的PA与股骨颈BMD和微体系结构正相关。过去PA与胫骨微体系结构正相关。 PA似乎在整个寿命中有益于骨骼健康。介绍了比较当前和过去的自我报告的骨骼物理活动的关联，以及当前加速度计确定的身体活动（PA），骨骼结构（骨矿物密度[BMD]和微体系结构），具有骨质增长或骨质疏松症。方法招募五十名社区居住的绝经后妇女（平均年龄64.4 +/- 7.7），招聘臀部或脊柱BMD T-Score < - 1.0 SD进行运动干预。在基线，目前，过去和总骨骼的身体问卷（BPAQ）分数是自我报告的，并且通过加速度计测量来客观地确定久坐不动，光和中度至剧烈PA（MVPA）的百分比。通过腰椎和髋关节双能X射线吸收测定（DXA），3D建模算法（3D-Shaper）评估骨骼结构，HIP DXA扫描和远端胫骨高分辨率外围定量计算断层扫描（HR-PQCT）扫描。结果，随着多变量调节，目前BPAQ分数和MVPA显着呈显着与股骨颈面积BMD（β= 0.315，P = 0.031和β= 0.311，P = 0.042）。 MVPA也与股骨皮质表面BMD（β= 0.333，P = 0.028）呈正相关（β= 0.028），平均皮质厚度（β= 0.374，P = 0.013）。过去和总BPAQ分数显示出具有胫骨小颌骨数的阳性关联（β= 0.391，p = 0.008和β= 0.381，p = 0.010，分别）和具有小梁分离的阴性关联（beta = - 0.396，p = 0.006和beta = - 分别为0.380，p = 0.009）和分布（β= - 0.411，p = 0.004和β= - 0.396，P = 0.006）。目前的BPAQ评分与胫骨皮质骨膜周长呈正相关（β= 0.278，P = 0.014）。结论BPAQ评分与老年女性的胫骨骨参数最常见，过去PA对小梁微体系结构具有持久的益处，以及与皮质骨产生的电流PA正面相关。

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