Cardio-metabolic Exercise & Lifestyle Lab, 2 Peter Kelly Drive, P.O. Box 4400, Fredericton, NB, Canada.
University of New Brunswick, Faculty of Kinesiology, 2 Peter Kelly Drive, P.O. Box 4400, Fredericton, NB, Canada.
J Diabetes Res. 2018 Mar 8;2018:7496768. doi: 10.1155/2018/7496768. eCollection 2018.
Some individuals living with obesity are free from typical cardiometabolic risk factors and are termed metabolically healthy obese (MHO). The patterns of physical activity and sedentary behaviors among MHO are currently unknown.
This study includes 414 youth (12-18 years old), 802 adults (19-44 years old), and 1230 older adults (45-85 years old) living with obesity from the 2003-2004 or 2005-2006 NHANES cycles. Time spent in bouts of 1, 5, 10, 30, and 60 minutes for moderate-to-vigorous physical activity (MVPA) and sedentary time was measured objectively using accelerometers. Participants were categorized as MHO if they had no cardiometabolic risk factors above the identified thresholds (triglycerides, high-density lipoprotein cholesterol, systolic blood pressure, diastolic blood pressure, and glucose).
The proportion of MHO was 19%, 14%, and 12% in youth, adults, and older adults, respectively. MHO adults displayed a higher 1-minute bout of MVPA per day compared to non-MHO ( = 0.02), but no difference was observed for MVPA and sedentary behavior patterns for youth and older adults. When adjusted for confounders, all bouts of sedentary behavior patterns in youth were significantly associated with being classified as MHO.
This study suggests that greater sedentary time is associated with cardiometabolic risk factors in youth even if they are physically active.
一些肥胖人群没有典型的心血管代谢风险因素，被称为代谢健康肥胖（MHO）。目前尚不清楚 MHO 人群的体力活动和久坐行为模式。
本研究纳入了来自 2003-2004 或 2005-2006 NHANES 周期的 414 名青少年（12-18 岁）、802 名成年人（19-44 岁）和 1230 名老年人（45-85 岁）。使用加速度计客观测量了 1、5、10、30 和 60 分钟的中高强度体力活动（MVPA）和久坐时间。如果参与者没有超过既定阈值（甘油三酯、高密度脂蛋白胆固醇、收缩压、舒张压和葡萄糖）的心血管代谢风险因素，则将其归类为 MHO。
青少年、成年人和老年人中 MHO 的比例分别为 19%、14%和 12%。与非 MHO 成年人相比，MHO 成年人每天的 1 分钟 MVPA 更高（ = 0.02），但青少年和老年人的 MVPA 和久坐行为模式没有差异。在调整混杂因素后，青少年的所有久坐行为模式均与被归类为 MHO 显著相关。
本研究表明，即使青少年体力活动较多，久坐时间较长也与心血管代谢风险因素有关。
