Centre for Adolescent Health, Royal Children's Hospital, Victoria, Australia.
J Adolesc Health. 2011 Mar;48(3):275-80. doi: 10.1016/j.jadohealth.2010.06.019. Epub 2010 Sep 9.
To assess changes in overweight and obesity between adolescence and young adulthood.
Prospective 8-wave cohort study in Victoria, Australia, with 1,520 adolescents tracked from the age of 14 for a period of 10 years.
Participants aged <18 years were classified as non-overweight, overweight, or obese according to International Obesity Taskforce cutoff points. In those aged >18 years overweight was defined as a body mass index (BMI) ≥ 25; and obesity as a BMI ≥ 30.
The proportion of overweight individuals increased from 20% in mid-adolescence to 33% at the age of 24 years. Obesity increased from 3.6% to 6.7%. Approximately 40% of young adults with a BMI ≥ 25 had been persistently at normal weights during adolescence and approximately 80% had been at a normal weight at some point. Around half of obese young adults had never been classified as obese as adolescents. No individual with persistent obesity in adolescence had a BMI <25 at 24 years. A total of 31% of females and 59% of males who had been overweight for only one or two waves of adolescent data collection had a BMI ≥ 25 at 24 years.
Substantial shifts in overweight and obesity occur between adolescence and young adulthood; the extent of continuity depends on both the severity and persistence of adiposity in adolescence. Few adolescents who peak into obesity or are persistently overweight achieve a normal weight in young adulthood. Resolution is more common in those who are less persistently overweight as teenagers, suggesting scope for lifestyle interventions in this subgroup.
评估青少年期到成年早期超重和肥胖的变化。
在澳大利亚维多利亚州进行的前瞻性 8 波队列研究，14 岁以下的 1520 名青少年进行了为期 10 年的跟踪研究。
根据国际肥胖工作组的切点，将年龄<18 岁的参与者分为非超重、超重或肥胖。对于年龄>18 岁的人，超重定义为体重指数（BMI）≥25；肥胖定义为 BMI≥30。
超重者的比例从青少年中期的 20%增加到 24 岁时的 33%。肥胖的比例从 3.6%增加到 6.7%。大约 40%的 BMI≥25 的年轻成年人在青少年时期一直保持正常体重，大约 80%的人在某个时候体重正常。大约一半肥胖的年轻成年人在青少年时期从未被归类为肥胖。在青少年时期持续肥胖的人中，没有一个人的 BMI 在 24 岁时<25。在青少年数据收集的仅 1 或 2 个波中超重的女性中，有 31%和男性中，有 59%的人在 24 岁时 BMI≥25。
超重和肥胖在青少年期到成年早期之间发生了很大变化；连续性的程度取决于青少年时期肥胖的严重程度和持续性。很少有青少年在肥胖高峰期或持续超重的情况下在成年早期达到正常体重。在青少年时期不太持续超重的人群中，体重减轻更为常见，这表明在这个亚组中可以进行生活方式干预。
