目的  探讨少肌症、少肌性肥胖和骨质疏松的患病率，分析少肌症、少肌性肥胖对骨质疏松的影响。   方法  选取20岁以上的辽宁汉族成年人群作为实验研究对象，样本量共纳入1266例。利用生物电阻抗分析仪（BIA）、骨密度仪测定各年龄段身体各部肌肉量、脂肪量和骨密度的分布情况，对成人少肌症、少肌性肥胖与骨质疏松症进行相关性研究。   结果  辽宁汉族成年人群，随年龄增长，其全身、躯干、四肢肌肉量及体重均呈现先升高，后降低的发展趋势。少肌症和少肌性肥胖患病率的性别间差异无统计学意义，而骨质疏松患病率的性别间差异有统计学意义。少肌症、少肌性肥胖、骨质疏松的患病率均在60岁以上人群达到峰值。少肌症和少肌性肥胖均为骨质疏松的危险因素。   结论  在辽宁地区汉族成年人群中，少肌症、少肌性肥胖及骨质疏松患病率年龄差异较为显著，骨质情况与骨骼肌质量和脂肪量有直接关系，会受到肌肉质量及脂肪量的影响。 

Objective  To understand the prevalence of sarcopenia,sarcopenic obesity and osteoporosis, and to analyze the influence of sarcopenia and sarcopenic obesity on osteoporosis.     Methods  After all the people signed the informed research agreement, the experimental subjects were selected from Han people over 20 years old in Liaoning region, and a total of 1266 cases were included. The distribution of muscle mass, fat mass and bone mineral density in different parts of adults were measured by bioelectrical impedance analyzer (BIA) and bone densitometer, and the correlation between sarcopenia and sarcopenic obesity and osteoporosis in adults was studied.     Results  With the increase of age, the muscle mass of limbs, trunk, total muscle mass and body weight of the Han adults in Liaoning showed a trend of increasing at first and then decreasing. There was no significant difference in the prevalence of sarcopenia and sarcopenic obesity between men and women, but there was a significant difference in the prevalence of osteoporosis between men and women. The prevalence of all three groups reached the peak in the age group above 60, and the difference was statistically significant.The risk factor for osteoporosis was sarcopenia and sarcopenic obesity.     Conclusion  Among adults of Han nationality in Liaoning, the prevalence of sarcopenic obesity,sarcopenia and osteoporosis is significantly different in age. Bone condition is affected by fat mass and muscle mass.