Physical Activity and Abdominal Fat Distribution in Greenland.
Physical Activity and Abdominal Fat Distribution in Greenland.
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DOI：
10.1249/mss.0000000000001337
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发表时间：
2017-10
影响因子：
4.1
通讯作者：
Jørgensen ME
中科院分区：
文献类型：
--
作者：
Dahl-Petersen IK;Brage S;Bjerregaard P;Tolstrup JS;Jørgensen ME
在格陵兰岛一项以成年因纽特人为对象的基于人群的研究中，我们探究了体力活动总量以及在各种经客观测量的体力活动（PA）强度上所花时间的重新分配与整体及腹部脂肪分布之间的关联。
数据是作为格陵兰岛一项全国性横断面健康调查的一部分收集的。一个加速度计和心率监测仪的组合（ACC + HR）测量了总的体力活动能量消耗（PAEE）以及体力活动强度（N = 1536）。通过超声检查评估内脏脂肪组织和皮下脂肪组织（VAT，SAT）。采用等时替代模型分析将1小时久坐时间替换为轻度或中等强度体力活动以及将1小时轻度强度体力活动替换为中等或高强度体力活动与体重指数（BMI）、腰围（WC）、SAT和VAT之间的关联。
发现总的PAEE与BMI、WC、VAT和SAT之间呈负线性相关。将1小时久坐时间替换为轻度强度体力活动与较低的WC（-0.6厘米，p = 0.01）、SAT（-0.08厘米，p < 0.001）和VAT（-0.04厘米，p = 0.359）相关。将轻度强度体力活动替换为高强度体力活动导致WC降低-6.1厘米（p < 0.001），VAT降低-0.7厘米（p = 0.018），SAT降低-0.7厘米（p < 0.001）。当进一步对BMI进行调整时，这些关联有所减弱；然而，大多数仍然显著，且方向大多未变。每次持续1分钟、5分钟和10分钟的中等至高强度体力活动（MVPA）均与整体及腹部脂肪分布呈负相关。
在格陵兰岛的因纽特人中，增加总的体力活动能量消耗与较低的BMI、WC以及腹部脂肪堆积相关。强调了促进整个体力活动强度分布向上移动以及激发即使是短暂的中等至高强度体力活动以限制SAT和VAT过度堆积的重要性，这可用于预防2型糖尿病。
We examined how total volume of physical activity and reallocation of time spent at various objectively measured intensities of physical activity (PA) were associated with overall and abdominal fat distribution in a population-based study of adult Inuit in Greenland. Data were collected as part of a countrywide cross-sectional health survey in Greenland. A combined accelerometer and heart rate monitor (ACC + HR) measured total physical activity energy expenditure (PAEE) and intensities of PA (N=1536). Visceral- and subcutaneous adipose tissue (VAT, SAT) was assessed by ultrasonography. Isotemporal substitution modeling was used to analyse the association between substitution of 1-hour of sedentary time to light or moderate intensity PA and 1-hour light intensity PA to moderate or vigorous intensity PA in relation to BMI, waist circumference (WC), SAT and VAT. A negative linear association was found for total PAEE and BMI, WC, VAT and SAT. Exchanging 1-hour of sedentary time with light intensity PA was associated with lower WC (-0.6 cm., p=0.01), SAT (-0.08 cm., p<0.001) and VAT (-0.04 cm., p=0.359). Exchanging light intensity PA with vigorous intensity PA resulted in -6.1 cm. lower WC (p<0.001), -0.7 cm. lower VAT (p=0.018) and -0.7 cm. lower SAT (p<0.001). When further adjusting for BMI the associations were attenuated; however, most of them remained significant, and the directions were mostly unchanged. Both 1,5, and 10 minutes bouts of MVPA were negatively associated with overall and abdominal fat distribution. Increasing total physical activity energy expenditure is associated with lower BMI, WC and abdominal fat accumulation among Inuit in Greenland. The importance of promoting an upward shift of the whole PA intensity distribution and to spur even short bouts of MVPA to limit excessive accumulation of SAT and VAT is highlighted and can be used in the prevention of type 2 diabetes.