Arvidsson Daniel, Lindblad Ulf, Sundquist Jan, Sundquist Kristina, Groop Leif, Bennet Louise
Dept of Clinical Sciences, Lund University, Malmö, Sweden; and the Center for Primary Health Care Research, Region Skåne and Lund University, Malmö Sweden.
J Phys Act Health. 2015 Feb;12(2):273-81. doi: 10.1123/jpah.2013-0222. Epub 2014 May 6.
To compare physical activity measures and their associations with insulin sensitivity, β-cell function and body mass index (BMI) between Iraqi immigrants and native Swedes.
A cross-sectional study of 493 Iraqis (58% men) and 469 Swedes (54% men) aged 30 to 75 years living in the city of Malmö, Sweden. Accelerometry was used for physical activity measures (sedentary time, breaks in sedentary time, moderate and vigorous physical activity, total counts). Insulin sensitivity index and oral disposal index were determined from an oral glucose tolerance test and BMI by body weight and height.
Iraqi men were less physically active than Swedish men, while the physical activity was more similar in the women. BMI was a strong predictor of insulin sensitivity and β-cell function and frequently associated with the physical activity measures. BMI modified the associations of insulin sensitivity and β-cell function with the physical activity measures to such extent that only VPA and total counts show direct associations with insulin sensitivity in addition to the indirect associations via BMI. Iraqi women demonstrated weaker associations compared with Swedish women.
Physical activity and performed at vigorous intensity may be important mainly for the insulin sensitivity in Iraqi immigrants and native Swedes.
比较伊拉克移民与瑞典本地人之间的身体活动指标及其与胰岛素敏感性、β细胞功能和体重指数（BMI）的关联。
对居住在瑞典马尔默市的493名伊拉克人（58%为男性）和469名瑞典人（54%为男性）进行横断面研究，年龄在30至75岁之间。使用加速度计测量身体活动（久坐时间、久坐时间中断、中度和剧烈身体活动、总计数）。通过口服葡萄糖耐量试验测定胰岛素敏感性指数和口服处置指数，并根据体重和身高计算BMI。
伊拉克男性的身体活动量低于瑞典男性，而女性的身体活动情况更为相似。BMI是胰岛素敏感性和β细胞功能的强预测指标，且经常与身体活动指标相关。BMI对胰岛素敏感性和β细胞功能与身体活动指标之间的关联产生了改变，以至于除了通过BMI的间接关联外，只有剧烈身体活动（VPA）和总计数与胰岛素敏感性存在直接关联。与瑞典女性相比，伊拉克女性的关联较弱。
身体活动以及剧烈强度的身体活动可能主要对伊拉克移民和瑞典本地人的胰岛素敏感性具有重要意义。
