The Joint Associations of Physical Activity and Sedentary Behaviors on Adiposity during Adolescence: The 1993 Pelotas (Brazil) Cohort Study.
The Joint Associations of Physical Activity and Sedentary Behaviors on Adiposity during Adolescence: The 1993 Pelotas (Brazil) Cohort Study.
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DOI：
10.3390/children10020265
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发表时间：
2023-01-31
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影响因子：
--
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先前在高收入国家进行的一项研究表明，特定的久坐行为，如看电视，与活跃和不活跃青少年的肥胖症有前瞻性关联。本研究的目的是检查久坐行为和中等强度和高强度的体力活动（MVPA）与巴西青少年肥胖症的联合协会。这项前瞻性队列研究包括377名1993年Pelantis（巴西）研究的参与者，他们在13岁时完成了加速度计评估，在18岁时完成了双能X线吸收测定法（DXA）评估。将加速度计测量的MVPA分为高（≥ 60分钟/天）和低（<60分钟/天）。根据中位数，将加速度计测量的久坐时间（SED）分为低（<49 min/h）和高（≥ 49 min/h）。自我报告的电视观看时间也根据中位数分为低（<3小时/天）和高（≥ 3小时/天）。我们将两个MVPA组（高和低）和两个SED组（低和高）合并为四个MVPA和SED组：高和低、高和高、低和低以及低和高。我们还以同样的方式创建了四个MVPA和电视组。使用DXA衍生的脂肪质量计算脂肪质量指数（FMI; kg/m2）。多变量线性回归分析比较了四个MVPA & SED组和四个MVPA & TV组18岁时的FMI，调整了社会经济状况，能量摄入和基线肥胖。分析结果表明，SED或看电视的时间与活跃和不活跃的巴西青少年的肥胖没有前瞻性相关性。这项研究表明，特定的久坐行为（如看电视）与肥胖之间的关联可能因社会环境而异-在这种情况下，高收入国家与中等收入国家。
A prior study conducted in high-income countries demonstrated that specific sedentary behavior, such as TV viewing, is prospectively associated with adiposity in both active and inactive adolescents. The aim of this study was to examine the joint associations of sedentary behaviors and moderate- and vigorous-intensity physical activity (MVPA) with adiposity among Brazilian adolescents. This prospective cohort study included 377 participants of the 1993 Pelotas (Brazil) Study who completed an accelerometry assessment at age 13 years and a dual-energy X-ray absorptiometry (DXA) assessment at age 18 years. Accelerometer-measured MVPA was dichotomized into high (≥60 min/day) and low (<60 min/day). Accelerometer-measured sedentary time (SED) was dichotomized into low (<49 min/h) and high (≥49 min/h) based on the median. Self-reported TV viewing time was also dichotomized into low (<3 h/day) and high (≥3 h/day) based on the median. We combined the two MVPA groups (high and low) and two SED groups (low and high) to form the four MVPA&SED groups: high&low, high&high, low&low, and low&high. We also created four MVPA&TV groups in the same manner. Fat mass index (FMI; kg/m2) was calculated using DXA-derived fat mass. Multivariable linear regression analyses compared FMI at 18 years among the four MVPA&SED groups and among the four MVPA&TV groups, adjusting for socioeconomic status, energy intake, and baseline adiposity. The analysis results showed that SED or TV viewing time was not prospectively associated with adiposity in both active and inactive Brazilian adolescents. This study suggests that the association between specific sedentary behaviors, such as TV viewing, and adiposity may differ across societal settings—in this case, high-income vs. middle-income countries.
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影响因子：
7.7
作者：
Katzmarzyk PT
通讯作者：
Katzmarzyk PT
影响因子：
2
作者：
BECHER, H
通讯作者：
BECHER, H
DOI：
10.1249/mss.0000000000001336
发表时间：
2017-10-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Janz, Kathleen F.;Boros, Piroska;Levy, Steven M.
通讯作者：
Levy, Steven M.
DOI：
10.1186/s12966-020-01037-z
发表时间：
2020-11-26
期刊：
The international journal of behavioral nutrition and physical activity
影响因子：
--
作者：
Chaput JP;Willumsen J;Bull F;Chou R;Ekelund U;Firth J;Jago R;Ortega FB;Katzmarzyk PT
通讯作者：
Katzmarzyk PT
影响因子：
5.1
作者：
Mielke, Gregore, I;Brown, Wendy J.;Hallal, Pedro C.
通讯作者：
Hallal, Pedro C.