El Khoury Georges, Zouhal Hassane, Cabagno Geneviève, El Khoury César, Rizkallah Maroun, Maalouf Ghassan, El Hage Rawad
Department of Physical Education, Faculty of Arts and Social Sciences, University of Balamand, El-Koura, Lebanon; Laboratoire VIP'S, UFR-APS, Campus la Harpe, Université Rennes 2, Rennes, France.
Laboratoire Mouvement Sport Sante, UFR APS, Rennes, France.
J Clin Densitom. 2017 Apr-Jun;20(2):239-246. doi: 10.1016/j.jocd.2016.10.009. Epub 2016 Dec 26.
The aim of this study was to compare bone variables in active overweight/obese men and sedentary overweight/obese men. Thirty-seven active overweight/obese men and 45 sedentary overweight/obese men participated in this study. Weight and height were measured, and body mass index was calculated. Body composition and bone variables (bone mineral content [BMC], bone mineral density [BMD], geometric indices of hip bone strength, and trabecular bone score) were measured by DXA. Physical activity level, daily calcium intake, daily protein intake, and sleep duration were measured by validated questionnaires. Maximum oxygen consumption (VO max) was determined by direct measurement while exercising on a medical treadmill. One-repetition-maximum half-squat of the lower limbs was measured using a validated protocol. Body weight and body mass index were higher in sedentary overweight/obese men than in active overweight/obese men. In the whole population (n = 82), VO max (in liter per minute), lean mass, and one-repetition-maximum half-squat were positively correlated to BMC, BMD, and geometric indices of hip bone strength (cross-sectional area and section modulus [Z] of the femoral neck [FN]). After adjusting for body weight using a 1-way analysis of covariance, active overweight/obese men displayed higher whole-body BMC, lumbar spine BMD, total hip BMD, FN BMD, FN cross-sectional area, and FN Z values than sedentary overweight/obese men. In conclusion, the current study suggests that physical activity level positively affects bone variables in overweight/obese men. Optimizing lean mass and muscular strength of the lower limbs can help to prevent osteoporosis in overweight and obese men.
本研究的目的是比较活跃的超重/肥胖男性与久坐的超重/肥胖男性的骨骼变量。37名活跃的超重/肥胖男性和45名久坐的超重/肥胖男性参与了本研究。测量了体重和身高，并计算了体重指数。通过双能X线吸收法（DXA）测量了身体成分和骨骼变量（骨矿物质含量[BMC]、骨矿物质密度[BMD]、髋部骨强度的几何指数和小梁骨评分）。通过经过验证的问卷测量了身体活动水平、每日钙摄入量、每日蛋白质摄入量和睡眠时间。在医用跑步机上运动时通过直接测量确定最大摄氧量（VO₂max）。使用经过验证的方案测量下肢一次重复最大半蹲。久坐的超重/肥胖男性的体重和体重指数高于活跃的超重/肥胖男性。在总体人群（n = 82）中，VO₂max（每分钟升数）、瘦体重和一次重复最大半蹲与BMC、BMD以及髋部骨强度的几何指数（股骨颈[FN]的横截面积和截面模量[Z]）呈正相关。在使用单因素协方差分析对体重进行校正后，活跃的超重/肥胖男性的全身BMC、腰椎BMD、全髋BMD、FN BMD、FN横截面积和FN Z值高于久坐的超重/肥胖男性。总之，当前研究表明身体活动水平对超重/肥胖男性的骨骼变量有积极影响。优化瘦体重和下肢肌肉力量有助于预防超重和肥胖男性的骨质疏松症。
