College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Obesity (Silver Spring). 2018 Mar;26(3):613-620. doi: 10.1002/oby.22111. Epub 2018 Jan 27.
Fat mass and the prevalence of overweight/obesity (OWO) increase during emerging adulthood (EA; 18-25 years). The factors that contribute to the transition from having healthy weight to having OWO during EA are understudied. This study aimed to identify the independent effect of concurrent physical activity (PA) and energy intake (EI) and childhood/adolescent fat accrual, PA, and EI on EA fat accrual.
One hundred twenty-six participants (59 male) were measured serially between 1991 and 2011. Measures included age, height, weight, total body and trunk fat mass (TBF and TrF, in grams) derived from dual-energy x-ray absorptiometry, and PA and EI. Composite childhood/adolescent z scores were calculated for each participant (average mean z score) for TBF, TrF, PA, and EI. Multilevel random-effects models were developed.
EA fat accrual was predicted by childhood and adolescent TBF and TrF z score (0.30 ± 0.05, P < 0.05), respectively, in both sexes. Concurrent PA (-0.06 ± 0.02, P < 0.05) was significant in males only.
These results underscore the importance of maintaining a lower TBF and TrF during childhood and adolescence, and a higher level of PA in order to mitigate TBF and TrF accrual and prevent the transition from having healthy weight to having OWO during EA.
在成年早期（18-25 岁），体脂肪量和超重/肥胖（OWO）的患病率会增加。导致在成年早期从健康体重过渡到 OWO 的因素尚未得到充分研究。本研究旨在确定同期身体活动（PA）和能量摄入（EI）以及儿童/青少年脂肪堆积、PA 和 EI 对 EA 脂肪堆积的独立影响。
126 名参与者（59 名男性）在 1991 年至 2011 年期间进行了连续测量。测量包括年龄、身高、体重、双能 X 射线吸收法测定的全身和躯干脂肪量（TBF 和 TrF，以克为单位）以及 PA 和 EI。为每个参与者计算了儿童/青少年时期 TBF、TrF、PA 和 EI 的综合 z 分数（平均平均 z 分数）。开发了多水平随机效应模型。
在两性中，EA 脂肪堆积分别由儿童和青少年时期的 TBF 和 TrF z 分数（分别为 0.30±0.05，P<0.05）预测。仅在男性中，同期 PA（-0.06±0.02，P<0.05）具有显著意义。
这些结果强调了在儿童和青少年时期保持较低的 TBF 和 TrF，以及较高水平的 PA 的重要性，以减轻 TBF 和 TrF 的积累，并防止从健康体重过渡到 EA 时期的 OWO。
