Objectively measured sedentary time and physical activity and associations with body weight gain: does body weight determine a decline in moderate and vigorous intensity physical activity?
Objectively measured sedentary time and physical activity and associations with body weight gain: does body weight determine a decline in moderate and vigorous intensity physical activity?
复制标题
DOI：
10.1038/ijo.2017.186
复制
发表时间：
2017-12-01
影响因子：
4.9
通讯作者：
Hansen, B. H.
中科院分区：
文献类型：
--
作者：
Ekelund, U.;Kolle, E.;Hansen, B. H.
目标：高水平的体力活动（PA）可以预防肥胖的发生。然而，不同强度的体力活动、久坐时间和体重状态之间关联的大小和方向仍不清楚。因此，我们检验了客观测量的久坐时间和 PA 是否可以独立预测体重增加、体重变化，并检验反向因果关系的可能性。方法：我们检验了久坐时间、PA 和体重 (BW) 之间的前瞻性关联。基线测量是在 2008/2009 年进行的，后续测量是在 2014/2015 年对挪威成年人口的随机样本（N=1710，45.1% 男性）进行的。通过加速度计测量中等强度和高强度 PA (MVPA) 和久坐时间以及自我报告的体重和身高。我们首先对基线久坐时间和 PA 与随访时 BW 之间的关联进行建模。然后，我们在不同的模型中对反向关联（BW 作为暴露）以及久坐时间和 PA（作为结果）进行建模。所有模型均根据年龄、性别、结果基线值、社会经济状况、饮酒、吸烟、监测仪佩戴时间和随访时间进行调整。 结果：基线和随访期间体重指数 (BMI) 增加了 0.2 个单位 (P = 0.003)，46.5% 的参与者在基线时超重 (36.4%) 或肥胖 (10.1%)，增加至 49.6%（11.7% 肥胖）在后续行动中。调整协变量后，基线久坐时间、MVPA 和剧烈 PA 与随访时的体重无关。相反，在调整模型中，基线 BW 与 MVPA（β=-0.11；95% 置信区间 (CI)；-0.21，-0.009）和 VPA（β=- 0.035；95% CI；- 0.059，-0.011）呈负相关。当 BW 被 BMI 取代时，这些相关性没有改变。结论：基线 BW 似乎决定了挪威健康成年男性和女性 MVPA 的下降，比相反更明显。
OBJECTIVES: High levels of physical activity (PA) may prevent the development of obesity. However, the magnitude and direction of the association between PA of various intensities, sedentary time and weight status remain unclear. Thus, we examined whether objectively measured sedentary time and PA independently predict gain in body weight, change in body weight and to examine the possibility of reverse causation.METHODS: We examined the prospective associations between sedentary time, PA and body weight (BW). Baseline measurements were conducted in 2008/2009 and follow-up measurements in 2014/2015 in a random sample of the adult Norwegian population (N=1710, 45.1% men). Moderate and vigorous intensity PA (MVPA) and sedentary time were measured by accelerometry and BW and height self-reported. We first modelled the associations between baseline sedentary time and PA with BW at follow-up. We then modelled the reverse associations (BW as the exposure) and sedentary time and PA (as outcomes) in separate models. All models were adjusted for age, sex, baseline value of the outcome, socio-economic status, alcohol consumption, smoking, monitor wear time and follow-up time.RESULTS: Body mass index (BMI) increased by 0.2 units (P = 0.003) between baseline and follow-up, and 46.5% of participants were either overweight (36.4%) or obese (10.1%) at baseline increasing to 49.6% (11.7% obese) at follow-up. Baseline sedentary time, MVPA and vigorous PA were not associated with BW at follow-up after adjustment for covariates. In contrast, baseline BW was inversely associated with MVPA (beta=-0.11; 95% confidence interval (CI); -0.21, -0.009) and VPA (beta=- 0.035; 95% CI; - 0.059, -0.011) in adjusted models. These associations were unchanged when BW was substituted by BMI.CONCLUSIONS: Baseline BW seems to determine a decrease in MVPA in healthy adult Norwegian men and women, more so than the reverse.