不同年龄的大连成人身体水含量变化研究

Changes of body water content at different ages in Dalian adult

关键词:  身体水含量  人体成分  生物电阻抗分析法  大连  成人

Key words:  [Key words]　body water  body composition  bioelectrical impedance analysis  Dalian  adult

摘要:

[摘要]　目的　探讨大连地区成人身体水含量及其构成比在各年龄段的变化规律。　方法　选择大连地区的汉族成人共计1105（男性458，女性647）名，按10岁一个年龄组，共分5组。采用生物电阻抗分析法检测体重、身体总水分量、体内水分比率、细胞内液量、细胞外液量、细胞外液率等。　结果　1105名大连地区汉族成人的总体重（kg）、身体总水分量（kg）、体内水分比率（%）、细胞内液量（kg）、细胞外液量（kg）和细胞外液率（%）的平均值±标准差，男性分别为77.6±12.9、39.6±5.3、51.6±5.3、23.8±3.9、15.7±1.6和39.9±2.3；女性分别为：60.5±9.1、29.3±3.3、48.8±3.3、17.2±1.9、12.1±1.6和41.3±2.1，除细胞外液率女性大于男性（P<0.01）外，其他各项均为男性大于女性，且差异也均有显著性意义（P<0.01）。身体总水分量男性的生长曲线在20岁开始缓慢上升，30岁开始缓慢下降，女性从20岁开始一直缓慢上升；随着年龄的增长男性与女性的生长曲线逐渐靠近，但未交叉。随年龄增长体内水分比率均呈下降趋势，男性大于女性；细胞外液比率则呈上升趋势，但女性大于男性。　结论　大连地区男女成人的体内水分比率随年龄增长呈下降趋势，身体水含量存在较明显的性别差异。

Abstract:

[Abstract]　Objective　To investigate the status and proportion characteristics of adult body water content at different ages in Dalian area.　Methods　Totally 1105 (458 male and 647 female) Dalian resident adults with Han nationality were selected. The objects were divided into 5 groups with every ten years as an age group. Bioelectrical impedance method was adopted to test the items including Body Weight (kg), Total Body Water Weight (TBW, kg), Percentage of Body Water (PBW, %), Extracellular Water (ECW, kg), Intracellular Water (ICW, kg) and Extracellular fluid Rate (ECW/TBW%). SPSS19.0 statistical software was adopted for data statistics processing, the mean values comparison with u test.　Results　In Dalian area, the body weight (kg), total body water (kg), body water rate (%), intracellular water (kg), extracellular water (kg), and extracellular water rate (%) were 77.6±12.9, 39.6±5.3, 51.6±5.3, 23.8±3.9, 15.7±1.6, and 39.9±2.3 in male, respectively; and 60.5±9.1, 29.3±3.3, 48.8±3.3, 17.2±1.9, 12.1±1.6, and 41.3±2.1 in female, respectively. All the data showed significantly difference between male and female (P<0.01). With an exception of Extracellular fluid Rate, all the data in male were higher than female. Growth curves of the male body water content increased gradually from 20 years old, and declined stepwise after 30 years old; the curves of female rose from age of 20 and kept increasing tendency till close to the curve of male but no cross could be seen between the two curves. The Percentage of Body Water declined with the age in both gender. The decline trend of male was much more than female.The Extracellular fluid Rate increased and changing speed of female was faster than that of male.　Conclusion　The percentage of body water in Dalian adults decreased with age in both male and female, and the significant gender differences could be observed in body water content.