Department of Physical Education, University of Balamand, El-Koura, Lebanon.
Department of Physical Education, University of Balamand, El-Koura, Lebanon.
J Clin Densitom. 2014 Apr-Jun;17(2):320-4. doi: 10.1016/j.jocd.2014.01.008. Epub 2014 Mar 24.
The aim of this study was to explore the relationship between maximal oxygen consumption (VO2 max) and bone mineral density (BMD) in a group of young Lebanese adults. Twenty women and 37 men whose ages range from 18 to 32 yr participated in this study. Informed written consent was obtained from the participants. Body weight and height were measured, and body mass index was calculated. VO2 max was determined by direct measurement while exercising on a bicycle ergometer (Siemens-Elema RE 820; Rodby Elektronik AB, Enhorna, Sweden). Whole body bone mineral content (WB BMC), whole body bone mineral density (WB BMD), lumbar spine BMD (L1-L4 BMD), total hip BMD (TH BMD), and femoral neck BMD (FN BMD) were measured by dual-energy X-ray absorptiometry. In women, VO2 max (expressed as L/mn) was positively correlated to WB BMC (r = 0.82; p < 0.001), WB BMD (r = 0.80; p < 0.001), L1-L4 BMD (r = 0.73; p < 0.001), TH BMD (r = 0.80; p < 0.001), and FN BMD (r = 0.85; p < 0.001). In men, VO2 max (expressed as L/mn) was positively correlated to WB BMC (r = 0.57; p < 0.001), WB BMD (r = 0.53; p < 0.001), L1-L4 BMD (r = 0.50; p < 0.001), TH BMD (r = 0.38; p < 0.01), and FN BMD (r = 0.30; p < 0.05). In both sexes, the positive associations between VO2 max and bone variables (BMC and BMD) remained significant after adjustment for age (p < 0.001). This study suggests that VO2 max (L/mn) is a positive determinant of BMC and BMD in young adults. Aerobic power seems to be a determinant of BMC and BMD in young adults.
本研究旨在探讨一组年轻黎巴嫩成年人的最大摄氧量（VO2 max）与骨密度（BMD）之间的关系。20 名女性和 37 名年龄在 18 至 32 岁之间的男性参加了这项研究。参与者获得了知情书面同意。测量了体重和身高，并计算了体重指数。通过在自行车测力计（西门子-埃莱玛 RE 820；Rodby Elektronik AB，Enhorna，瑞典）上直接运动来确定 VO2 max。全身骨矿物质含量（WB BMC）、全身骨矿物质密度（WB BMD）、腰椎骨密度（L1-L4 BMD）、总髋骨密度（TH BMD）和股骨颈骨密度（FN BMD）通过双能 X 射线吸收法测量。在女性中，VO2 max（以 L/min 表示）与 WB BMC（r=0.82；p<0.001）、WB BMD（r=0.80；p<0.001）、L1-L4 BMD（r=0.73；p<0.001）、TH BMD（r=0.80；p<0.001）和 FN BMD（r=0.85；p<0.001）呈正相关。在男性中，VO2 max（以 L/min 表示）与 WB BMC（r=0.57；p<0.001）、WB BMD（r=0.53；p<0.001）、L1-L4 BMD（r=0.50；p<0.001）、TH BMD（r=0.38；p<0.01）和 FN BMD（r=0.30；p<0.05）呈正相关。在两性中，VO2 max 与骨变量（BMC 和 BMD）之间的正相关在调整年龄后仍然显著（p<0.001）。本研究表明，VO2 max（L/min）是年轻人 BMC 和 BMD 的正决定因素。有氧运动能力似乎是年轻人 BMC 和 BMD 的决定因素。
