Department of Physical Education, FAS, University of Balamand, Kelhat El Koura, Lebanon; Movement, Sport, and Health Sciences Laboratory (M2S), UFR-STAPS, University of Rennes 2, Rennes, France.
Department of Physical Education, FAS, University of Balamand, Kelhat El Koura, Lebanon; Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS-EA 7369), Lille University, Ronchin, France.
J Clin Densitom. 2019 Jul-Sep;22(3):311-320. doi: 10.1016/j.jocd.2019.01.005. Epub 2019 Jan 25.
The aim of this study was to explore the relationships between maximum power and bone variables in a group of young adults. Two hundred and one young adults (53 men and 148 women) whose ages range from 18 to 35 years voluntarily participated in this study. Weight and height were measured, and body mass index was calculated. Body composition, bone mineral content (BMC) and bone mineral density (BMD) were determined for each individual by dual-energy X-ray absorptiometry. Vertical jump was evaluated using a validated field test (Sargent test). The highest vertical jump was selected. Maximum power (P max, in watts) of the lower limbs was calculated accordingly. In young men, maximum power was positively correlated to whole body (WB) BMC (r = 0.65; p < 0.001), WB BMD (r = 0.41; p < 0.01), L1-L4 BMC (r = 0.54; p < 0.001), total hip (TH) BMC (r = 0.50; p < 0.001), femoral neck (FN) BMC (r = 0.35; p < 0.01), FN cross-sectional area (CSA) (r = 0.33; p < 0.05) and FN cross-sectional moment of inertia (CSMI) (r = 0.50; p < 0.001). In young women, maximum power was positively correlated to WB BMC (r = 0.48; p < 0.001), WB BMD (r = 0.28; p < 0.001), L1-L4 BMC (r = 0.34; p < 0.001), TH BMC (r = 0.43; p < 0.001), TH BMD (r = 0.21; p < 0.01), FN BMC (r = 0.42; p < 0.001), FN BMD (r = 0.31; p < 0.001), FN CSA (r = 0.41; p < 0.001), FN CSMI (r = 0.40; p < 0.001) and FN Z (r = 0.41; p < 0.01). The current study suggests that maximum power is a positive determinant of WB BMC, WB BMD, FN CSA, and FN CSMI in young men. It also shows that maximum power is a positive determinant of WB BMC, WB BMD, TH BMD, FN BMD, FN CSA, FN CSMI, and FN Z in young women.
本研究旨在探讨一组年轻成年人的最大功率与骨骼变量之间的关系。201 名年龄在 18 至 35 岁之间的年轻成年人（53 名男性和 148 名女性）自愿参加了这项研究。测量了体重和身高，并计算了体重指数。通过双能 X 射线吸收法（DXA）确定了每个人的身体成分、骨矿物质含量（BMC）和骨矿物质密度（BMD）。通过一项经过验证的现场测试（Sargent 测试）评估垂直跳跃能力。选择最高的垂直跳跃。相应地计算出下肢的最大功率（P max，以瓦特为单位）。在年轻男性中，最大功率与全身（WB）BMC（r=0.65;p<0.001）、WB BMD（r=0.41;p<0.01）、L1-L4 BMC（r=0.54;p<0.001）、全髋（TH）BMC（r=0.50;p<0.001）、股骨颈（FN）BMC（r=0.35;p<0.01）、FN 横截面积（CSA）（r=0.33;p<0.05）和 FN 截面惯性矩（CSMI）（r=0.50;p<0.001）呈正相关。在年轻女性中，最大功率与全身 BMC（r=0.48;p<0.001）、全身 BMD（r=0.28;p<0.001）、L1-L4 BMC（r=0.34;p<0.001）、TH BMC（r=0.43;p<0.001）、TH BMD（r=0.21;p<0.01）、FN BMC（r=0.42;p<0.001）、FN BMD（r=0.31;p<0.001）、FN CSA（r=0.41;p<0.001）、FN CSMI（r=0.40;p<0.001）和 FN Z（r=0.41;p<0.01）呈正相关。目前的研究表明，最大功率是年轻男性全身 BMC、全身 BMD、FN CSA 和 FN CSMI 的正决定因素。它还表明，最大功率是年轻女性全身 BMC、全身 BMD、TH BMD、FN BMD、FN CSA、FN CSMI 和 FN Z 的正决定因素。
