Department of Psychiatry and Human Behavior, Weight Control and Diabetes Research Center, Brown Medical School and The Miriam Hospital, Providence, RI, USA.
Int J Obes (Lond). 2009 Dec;33(12):1374-80. doi: 10.1038/ijo.2009.185.
To compare the enrollment, attendance, retention and weight losses of young adults in behavioral weight loss (BWL) programs with older participants in the same trials.
Data were pooled from three NIH-funded adult BWL trials from two clinical centers in different regions of the country (total N=298); young adults were defined as those aged 18-35 years. Both young adults and adults were compared on session attendance, retention at the 6-month assessment, weight loss and physical activity at 6 months.
Young adults represented 7% of the sample, attended significantly fewer sessions than did adults (52 vs 74%, respectively; P<0.001) and were less likely to be retained for the 6-month assessment (67 vs 95%, respectively; P<0.05). Controlling for demographic variables, study and baseline weight, the mean weight losses achieved were significantly less for young adults compared with adults (-4.3 kg (6.3) vs -7.7 kg (7.0), respectively; P<0.05); fewer young adults achieved > or =5% weight loss at 6 months compared with older participants (8/21 (38%) vs 171/277 (62%); P<0.05). After controlling for session attendance, differences in the mean weight loss were not significant (P=0.81). Controlling for baseline values, study and demographics, changes in total physical activity over the initial 6 months of treatment were less for young adults compared with adults, but these differences only approached statistical significance (P=0.07).
These data indicate that standard programs do not meet the weight control needs of young adults. Research is urgently required to improve recruitment and retention efforts with this high-risk group.
比较行为体重管理（BWL）项目中青年参与者与同批年龄较大参与者的入组、出席、保留和体重减轻情况。
数据来自美国国立卫生研究院资助的三个成人 BWL 试验，来自该国两个不同地区的两个临床中心（总 N=298）；年轻成年人的定义为年龄在 18-35 岁之间。在出席会议、6 个月评估时的保留率、6 个月时的体重减轻和身体活动方面，将年轻成年人与成年人进行比较。
年轻成年人占样本的 7%，出席会议的次数明显少于成年人（分别为 52 次和 74 次；P<0.001），并且不太可能保留到 6 个月评估（分别为 67%和 95%；P<0.05）。控制人口统计学变量、研究和基线体重后，年轻成年人的平均体重减轻量明显小于成年人（-4.3 公斤（6.3）比-7.7 公斤（7.0）；P<0.05）；与年龄较大的参与者相比，较少的年轻成年人在 6 个月时达到>或=5%的体重减轻（8/21（38%）比 171/277（62%）；P<0.05）。在控制出席会议的情况下，体重减轻的平均差异不显著（P=0.81）。在控制基线值、研究和人口统计学变量的情况下，与成年人相比，年轻成年人在治疗的最初 6 个月内总身体活动的变化较小，但这些差异仅接近统计学意义（P=0.07）。
这些数据表明，标准方案不能满足年轻成年人的体重控制需求。迫切需要开展研究，以提高对这一高风险群体的招募和保留工作。
