运动对男性腰椎骨密度的影响

Association of Physical Activities and Bone Mass Density of Lumbar Spines in Men

目的探讨不同运动时间量对男性腰椎骨密度的影响,明确运动与男性腰椎骨密度的相关性。方法因骨关节疼痛在四川大学华西医院就诊的1169例男性患者,经双能X光骨密度测定仪测定L2～L4骨密度和骨矿含量;对患者身高、体质量(计算体重指数)、吸烟、基础疾病(高血压和糖尿病)患病率进行记录和分析;对患者运动状况进行问卷调查,按运动时间分为A组(经常运动)、B组(偶尔运动)和C组(不运动)3组,分析不同运动时间组间腰椎骨密度的差异。结果在体重指数无明显差异情况下,即使A组患者年龄、吸烟比例和高血压患病率均明显高于C组(P<0.01),但其L2～L4的骨密度和骨矿含量、平均骨密度、总骨矿含量和T值均明显高于C组(P<0.05或P<0.01);而B组和C组在年龄、体重指数、吸烟比例、基础疾病患病率无明显差异情况下,B组L2～L4的骨密度和骨矿含量、平均骨密度、总骨矿含量和T值较C组亦有一定程度升高(P>0.05)。结论不论何种运动形式,均可增加男性腰椎骨密度,但运动必须达到一定时间量且持之以恒;且达到一定时间量的运动对男性腰椎骨密度的有利作用在某种程度上可预防年龄增长、吸烟和并发基础疾病导致的腰椎骨密度下降。

Objective To determine the association of physical activities and bone mineral density of lumbar vertebrathe in men. Methods A total of 1169 men who sought medical attentions in the West China Hospital of Siehuan University from August, 2003 to December, 2005 because of ostealgia and arthralgia were given a dualenergy X-ray absorptiometry for the L2-L4 bone mineral density. The height, weight, smoking history, and diseases （eg. diabetes and hypertension） of the participants were recorded. A questionnaire survey was undertaken to assess the physical activities of the participants. The participants were classified into group A （frequent exercise）, B （occasional exercise） and C （no exercise） according to the frequencies of physical aetivities. The bone mass densities of lumbar vertebrae of the three groups were compared. Results Group A had greater bone mineral density and mineral content in L2-L4, greater average bone mineral density, and greater all bone mineral content and T-score than group C （P〈0.05 or P〈0.01）, although Group A had similar body mass index as Group C, was older and had greater prevalence of smoking and hypertension than Group C （P〈0. 01）. Group B had similar age and body mass index as Group C and greater smoking rate and prevalence of diabetes and hypertension than Group C （P〉0. 05） . But the differences of bone mineral density and mineral content of L2-L4, average bone mineral density, and all bone mineral content and T-score between Group B and C were not statistieal significant （P〉0. 05）. Conclusion Physical activities can increase bone mineral density of lumbar vertebrae in men. But frequent and persistent exereises are needed to prevent decreasing mineral densities due to ageing, smoking and diseases.