Introduction: The effects of ageing on bone can be mitigated with different types of physical training, such as power training. However, stimuli that combine increasing external and internal loads concomitantly may improve bone quality. The goal of this study was to assess the efficacy of a combined power and plyometric training on lumbar spine and distal tibia microstructure and function. Methods: 38 sedentary elderly women between 60 and 70 years were randomly allocated in experimental (N = 21) and control group (N = 17). The effects of the 20-week protocol on lumbar spine microstructure and tibia microstructure and function were assessed by trabecular bone score (TBS), high resolution peripheral quantitative computed tomography (HR-pQCT) and microfinite element analysis. Results: when compared to the effects found in the control group, the experimental group showed significant improvements in lumbar spine TBS (Hedges' g = 0.77); and in distal tibia trabecular thickness (g = 0.82) and trabecular bone mineral density (g=0.63). Conclusion: our findings underscore the effectiveness of the proposed intervention, suggesting it as a new strategy to slow down and even reverse the structural and functional losses in the skeletal system due to ageing.

中文翻译：

---

高强度运动干预可改善老年女性腰椎和远端胫骨的微结构和功能：一项为期 20 周的随机对照试验


简介：可以通过不同类型的身体训练（例如力量训练）来减轻衰老对骨骼的影响。然而，同时增加外部和内部负荷的刺激可能会改善骨质量。本研究的目的是评估联合力量和增强式训练对腰椎和远端胫骨微观结构和功能的功效。方法：将 38 名 60 至 70 岁久坐老年妇女随机分为实验组（N = 21）和对照组（N = 17）。通过骨小梁评分 (TBS)、高分辨率外周定量计算机断层扫描 (HR-pQCT) 和微有限元分析评估 20 周方案对腰椎微观结构和胫骨微观结构和功能的影响。结果：与对照组相比，实验组的腰椎 TBS 有显着改善（Hedges' g = 0.77）；以及远端胫骨小梁厚度（g = 0.82）和小梁骨矿物质密度（g = 0.63）。结论：我们的研究结果强调了所提出的干预措施的有效性，表明它是一种减缓甚至逆转因衰老而导致的骨骼系统结构和功能损失的新策略。