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首页> 外文期刊>BMC Pediatrics >Sedentary behavior patterns and adiposity in children: a study based on compositional data analysis
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Sedentary behavior patterns and adiposity in children: a study based on compositional data analysis

机译：儿童久坐行为模式和肥胖：基于组建数据分析的研究

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Between-person differences in sedentary patterns should be considered to understand the role of sedentary behavior (SB) in the development of childhood obesity. This study took a novel approach based on compositional data analysis to examine associations between SB patterns and adiposity and investigate differences in adiposity associated with time reallocation between time spent in sedentary bouts of different duration and physical activity. An analysis of cross-sectional data was performed in 425 children aged 7–12?years (58% girls). Waking behaviors were assessed using ActiGraph GT3X accelerometer for seven consecutive days. Multi-frequency bioimpedance measurement was used to determine adiposity. Compositional regression models with robust estimators were used to analyze associations between sedentary patterns and adiposity markers. To examine differences in adiposity associated with time reallocation, we used the compositional isotemporal substitution model. Significantly higher fat mass percentage (FM%; βilr1?=?0.18; 95% CI: 0.01, 0.34; p?=?0.040) and visceral adipose tissue (VAT; βilr1?=?0.37; 95% CI: 0.03, 0.71; p?=?0.034) were associated with time spent in middle sedentary bouts in duration of 10–29?min (relative to remaining behaviors). No significant associations were found for short (?10?min) and long sedentary bouts (≥30?min). Substituting the time spent in total SB with moderate-to-vigorous physical activity (MVPA) was associated with a decrease in VAT. Substituting 1?h/week of the time spent in middle sedentary bouts with MVPA was associated with 2.9% (95% CI: 1.2, 4.6), 3.4% (95% CI: 1.2, 5.5), and 6.1% (95% CI: 2.9, 9.2) lower FM%, fat mass index, and VAT, respectively. Moreover, substituting 2?h/week of time spent in middle sedentary bouts with short sedentary bouts was associated with 3.5% (95% CI: 0.02, 6.9) lower FM%. Our findings suggest that adiposity status could be improved by increasing MVPA at the expense of time spent in middle sedentary bouts. Some benefits to adiposity may also be expected from replacing middle sedentary bouts with short sedentary bouts, that is, by taking standing or activity breaks more often. These findings may help design more effective interventions to prevent and control childhood obesity.
机译：应考虑久坐模式的人之间的差异，了解久坐行为（SB）在儿童肥胖的发展中的作用。本研究采用了一种基于组建数据分析的新方法，以研究Sb模式与肥胖之间的关联，并调查与不同持续时间和身体活动的久坐时间分配的时间重新分配相关的肥胖差异。在7-12岁的425名儿童（58％女孩）中进行了横断面数据的分析。使用Actigraph GT3X加速度计连续七天评估醒来的行为。多频生物阻抗测量用于确定肥胖。具有稳健估计器的组成回归模型用于分析久坐模式和肥胖标志物之间的关联。为了检查与时间重新分配相关的肥胖的差异，我们使用了组成的同型替代模型。脂肪质量百分比显着较高（FM％;βILR1？= 0.18; 95％CI：0.01,0.34; p？= 0.040）和内脏脂肪组织（VAT;βILR1？=？0.37; 95％CI：0.03,0.71; p？= 0.034）与在持续时间为10-29？min（相对于剩余行为）的中间封闭伴者的时间相关。没有发现短（<？10？min）和长期久坐的久坐症（≥30次）的重大关联。用中等至剧烈的身体活性（MVPA）用总Sb所花费的时间与增值税减少有关。用MVPA中的中沉额偏移量花费的时间取代1？H /周与2.9％（95％CI：1.2,4.6），3.4％（95％CI：1.2,5.5）和6.1％（95％CI） ：2.9,9.2）分别降低FM％，脂肪质量指数和增值税。此外，用短暂的久留伴者在中间封闭伴侣中替代的时间替代2？H /周的时间，与3.5％（95％CI：0.02,6.9）较低的FM％。我们的研究结果表明，通过在中间久坐的时间花费的时间内增加MVPA，可以提高肥胖状态。还可以预期对肥胖的一些好处，从而用短暂的久坐性偏移替代中间久坐性偏移，即通过常规或活动更频繁地破坏。这些调查结果可能有助于设计更有效的干预措施来预防和控制儿童肥胖症。

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