【摘要】 目的　青少年时期提高峰值骨量是预防老年骨质疏松的重要措施。本文从大规模人群调查，研究运动对骨骼的发展，峰值骨量（ Ｐ Ｂ Ｍ ）及随后变化的影响。方法　在北京地区随机抽取７５７例北方出生长大的正常健康人，年龄１５～５０岁。在 Ｐ Ｂ Ｍ 形成前人群，运动量水平按与同年龄人相比分少、相同、多３类；在 Ｐ Ｍ Ｂ 形成后的人群，调查近５年运动量，按每天半小时，每周３小时计分成少于、达到或多于两组。用美国 Ｌｕｎａｒ 公司 Ｄ Ｐ Ｘ Ｌ 型骨密度仪测定７５７例对象的 Ｌ２ Ｌ４、股骨近端和全身 Ｂ Ｍ Ｄ。结果　 Ｂ Ｍ Ｄ 测定值显示：男性＜ ２５岁组，运动水平高组与中等组比较，各部位 Ｂ Ｍ Ｄ 差异均有显著性（ Ｐ ＜００１）。腰椎、股骨 Ｂ Ｍ Ｄ 差异有非常显著性（ Ｐ ＜ ００１）。运动量高组与少组比较，腰椎、股骨 Ｂ Ｍ Ｄ 差异有非常显著性。中等组女性＜ ３０岁组，运动量高的与中等组比较，腰椎和全身部位的 Ｂ Ｍ Ｄ 有统计学差异；女性＞ ３０岁组，运动量高和中等组与低运动量组比较，在腰椎部位的 Ｂ Ｍ Ｄ 差异均有显著性更多还原

【Abstract】 Objective\ To increase peak bone mass(PBM) in teen age is an important means for prevention of osteroporosis development in elder age. The purpose of this study was to investigate the relation ship between physical activity and bone mass density (BMD). Methods 757 healthy subjects aged 15—50 years, recruited in Beijing, were divided into different groups according to their activity levels. Their BMD of lumbar, hip and total body was measured using DXA(DPX L). Results \ In men aged less than 25 years, BMD of the group with high activity level was significantly higher than that with medium activity level(P<0 01). In women aged less than 30 years, BMD of the group with high and medium activity levels was significantly higher than that with low activity level.Conclusion\ Before reaching PBM, physical activity may effectively increase BMD.\;更多还原