峰值功率和体重预测健康成年男性和女性胫骨骨强度。
Peak power and body mass as predictors of tibial bone strength in healthy male and female adults.
机构信息
Department of Kinesiology California State University East Bay, USA.
出版信息
J Musculoskelet Neuronal Interact. 2022 Jun 1;22(2):154-160.
OBJECTIVE
The purpose of this study was to examine whether a non-invasive, muscular fitness field test was a better predictor of bone strength compared to body mass in healthy adults.
METHODS
Hierarchical multiple regression analyses were used to determine the amount of variance that peak power explained for tibial bone strength compared to body mass. Peak power was estimated from maximal vertical jump height using the Sayer's equation. Peripheral quantitative computed tomography scans were used to assess bone strength measures.
RESULTS
Peak power (β=0.541, p<0.001) contributed more to the unique variance in bone strength index for compression (trabecular bone) compared to body mass (β=-0.102, p=0.332). For polar strength strain index (cortical bone), the beta coefficient for body mass remained significant (β=0.257, p<0.006), however peak power's contribution was similar (β=0.213, p=0.051).
CONCLUSION
Compared to body mass, peak power was a better predictor for trabecular bone strength but similar to body mass for cortical bone strength. These data provide additional support for the development of a vertical jump test as an objective, valid and reliable measure to monitor bone strength among youth and adult populations.
目的
本研究旨在探究与体质量相比，非侵入性肌肉健康场测试是否能更好地预测健康成年人的骨强度。
方法
采用分层多元回归分析，确定与体质量相比，最大垂直跳跃高度的峰值功率对胫骨骨强度的解释方差量。峰值功率通过 Sayer 方程从最大垂直跳跃高度估算得出。外周定量计算机断层扫描用于评估骨强度测量值。
结果
与体质量（β=-0.102，p=0.332）相比，峰值功率（β=0.541，p<0.001）对骨强度指数（松质骨）的独特方差的贡献更大。对于极强度应变指数（皮质骨），体质量的β系数仍然显著（β=0.257，p<0.006），然而，峰值功率的贡献相似（β=0.213，p=0.051）。
结论
与体质量相比，峰值功率是预测松质骨强度的更好指标，但与体质量相比，峰值功率对皮质骨强度的预测作用相似。这些数据为开发垂直跳跃测试提供了额外的支持，作为监测青少年和成年人群体骨强度的一种客观、有效和可靠的方法。
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