School of Health Sciences, College of Health, Massey University, Tennent Drive, Palmerston North 4442, New Zealand.
Riddet Institute, Palmerston North 4442, New Zealand.
Int J Environ Res Public Health. 2019 Aug 31;16(17):3177. doi: 10.3390/ijerph16173177.
Physical activity plays an important role in the maintenance of bone health from childhood through adulthood. This study aimed to explore the associations between self-reported physical activity (PA), activity energy expenditure (AEE), heel ultrasound parameters and bone health measures among older adult women. The AEE was estimated from the responses of questionnaires for 125 older adult women aged 54-81 years. The bone parameters were measured by dual energy x-ray absorptiometry (DXA) and heel ultrasound parameters by the heel quantitative ultrasound (QUS). This study showed that AEE and the metabolic equivalent task (MET) were positively correlated with the bone and heel ultrasound parameters. However, fat mass (FM) and fat percentage were negatively correlated with AEE and MET. In addition, the regression analysis showed that higher AEE was a strong predictor of a higher spine T-score (β = 0.212, = 0.015), QUS T-score (β = 0.239, = 0.011) and stiffness index (β = 0.240, = 0.010) after adjusting for age, fat mass, lean mass, height and calcium intake. These results contribute to our understanding of the importance of physical activity in postmenopausal women by reiterating the benefits of physical activity for older adult women. Physical activity is an important tool for the prevention and management of osteoporosis.
体力活动在儿童期至成年期维持骨骼健康方面发挥着重要作用。本研究旨在探讨中老年女性体力活动（PA）自我报告、活动能量消耗（AEE）、足跟超声参数与骨健康指标之间的相关性。AEE 是通过对 125 名 54-81 岁中老年女性的问卷回答进行估计的。骨参数通过双能 X 射线吸收法（DXA）测量，足跟超声参数通过足跟定量超声（QUS）测量。本研究表明，AEE 和代谢当量任务（MET）与骨和足跟超声参数呈正相关。然而，脂肪量（FM）和脂肪百分比与 AEE 和 MET 呈负相关。此外，回归分析表明，较高的 AEE 是脊柱 T 评分较高的有力预测指标（β=0.212，=0.015）、QUS T 评分较高（β=0.239，=0.011）和刚度指数较高（β=0.240，=0.010），调整年龄、脂肪量、瘦体量、身高和钙摄入量后。这些结果通过重申体力活动对中老年女性的益处，为我们理解体力活动对绝经后女性的重要性做出了贡献。体力活动是预防和管理骨质疏松症的重要工具。
