摘要
目的研究年龄对北京地区健康妇女身体成分的影响。方法通过广告以每个年龄5-7例的比例招募北京地区志愿者共316例，年龄20～74岁。所有志愿者均填写健康档案，并采用双能X线吸收法（DEXA）测量全身和局部身体成分，检测的指标包括骨矿盐含量、瘦组织含量、脂肪组织含量和脂肪百分比，测定的局部区域包括上肢、下肢、躯干、“男性”区域和“女性”区域。并计算体重指数（BMI、脂肪指数（FMI）、去脂指数（FFMI）及“男性”与“女性”区域脂肪百分比的比值（A／G值）。将志愿者按年龄分组，每10岁1组，共6组。结果骨矿盐含量与瘦组织含量分别在30～39岁组和40～49岁组达峰值，到70～74岁时分别下降18．1％和5．2％。全身脂肪组织含量及全身脂肪百分比均随年龄增长而增加，在本研究的年龄范围内，脂肪组织含量从（16±5）kg增至（24±6）kg，全身脂肪百分比从31．3％增至39．5％。各局部区域的脂肪百分比均随年龄增长而增加，以“男性”区域增加幅度最大，为32．2％；BMI从（21．1±2．1）kg／m^2逐渐增至（26．1±3．7）kg／m^2；FMI从（6．3±1．7）kg／m^2增至（10．0±2．4）kg／m^2，增长幅度达63％；FFMI变化幅度较小，从14．43kg／m^2增至15．71kg／m^2。A／G值从20～29岁组的0．85逐渐上升至70～74岁组的1、02。40～59岁妇女不同月经状态对A／G值和骨矿盐含量有显著影响，但对BMI、体重、腰围均无显著影响。结论年龄对北京地区健康成年女性的身体成分及其分布有明显的影响。
Objective To observe the effect of ageand menstrual statuson body composition in healthy Beijing women. Methods We measured body composition with dual-energy X-ray （GE Lunar Prodigy） in 316 healthy Beijing females aged 20 to 74 years （5-7 cases per age）. Parameters provided by the software were as following： total body bone mineral content, lean mass, fat mass and fat percentage（ % fat）. Local regions measured included arm, leg, trunk, android region and gynoid region. Body mass index （BMI）, fat mass index （FMI）, free fat mass index （FFMI） and A/G were calculated. Volunteers were assigned to 6 groups according age by every ten years a group. Results BMC peaked during the 4^th decade, LM peaked during the 5^th decade, with a decline of 18. 1% and 5. 2% respectively at age 74 years. Total body fat mass and % fat showed a general increase with aging throughout the studied age range. Total body fat mass increased from 16 ± 5 kg at age 20-29 years to 24 ± 6 kg at age 70-74 years, while % fat increased from 31.3% to 39. 5%. All local region %fat increased with aging at different extents. Android region %fat showed the largest raise extent（32. 2% ）. BMI increased gradually from 21. 1kg/m^2 at age 20-29 years to 26. 1 kg/m^2 at age 70-74 years. FMI changed more obviously than FFMI. A/G increased from 0. 85 at age 20-29years to 1.02 at age 70-74 years. Different menstrual status in women of 40-59 years had obvious effect on A/G and BMC （ P 〈 0. 05 ）, while it had no significant effect on BMI, body weight and waist circumference （P 〉 0. 05 ）. Conclusions Aging and menstrual status have evident effect on body composition distribution in healthy Beijing women.
出处
《中华妇产科杂志》
CAS
CSCD
北大核心
2008年第1期36-40,共5页
Chinese Journal of Obstetrics and Gynecology
