Department of Physical Education, Division of Education, Faculty of Arts and Sciences, University of Balamand, Kelhat El-Koura, Lebanon.
EA 7369 - URePSSS - unité de recherche pluridisciplinaire sport santé société, Université Littoral Côte d'Opale, France.
J Musculoskelet Neuronal Interact. 2020 Mar 3;20(1):53-61.
The purpose of this study was to explore the relationships between several physical performance variables and bone parameters in a group of middle-aged men.
50 middle-aged men participated in this study. Body composition and bone variables were evaluated by DXA. Bone mineral density (BMD) was measured at the whole body (WB), total radius (TR), lumbar spine (L1-L4), total hip (TH) and femoral neck (FN). Geometric indices of femoral neck (FN) strength were also calculated by DXA. Handgrip strength, vertical jump, maximum power of the lower limbs (watts), maximal half-squat strength, maximal bench-press strength, sprint performance (10 m) and maximum oxygen consumption (VO max, L/min) were evaluated using validated tests.
VO max (L/min), maximum power of the lower limbs, maximal half-squat strength, maximal bench-press strength, handgrip and lean mass were positively correlated to many bone parameters. Lean mass was the strongest determinant of WB BMC. VO max (L/min) was the strongest determinant of WB BMD, TH BMD and FN BMD. Maximum power was the strongest determinant of total radius BMD.
The current study suggests that VO max (L/min), lean mass and maximum power of the lower limbs are the strongest determinants of bone variables in middle-aged men.
本研究旨在探讨中年男性群体中几种身体机能变量与骨参数之间的关系。
本研究纳入了 50 名中年男性。通过 DXA 评估身体成分和骨变量。全身骨密度（BMD）、总桡骨（TR）、腰椎（L1-L4）、全髋关节（TH）和股骨颈（FN）的骨矿物质密度（BMD）进行了测量。还通过 DXA 计算了股骨颈（FN）强度的几何指数。使用经过验证的测试评估了握力、垂直跳跃、下肢最大功率（瓦特）、最大半蹲力量、最大卧推力量、短跑表现（10 米）和最大摄氧量（VO max，L/min）。
VO max（L/min）、下肢最大功率、最大半蹲力量、最大卧推力量、握力和瘦体重与许多骨参数呈正相关。瘦体重是全身 BMC 的最强决定因素。VO max（L/min）是全身 BMD、TH BMD 和 FN BMD 的最强决定因素。最大功率是总桡骨 BMD 的最强决定因素。
本研究表明，VO max（L/min）、瘦体重和下肢最大功率是中年男性骨变量的最强决定因素。
