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背景:超重和肥胖已成为世界上很多地区严重的公共健康问题。研究表明,在日常生活中做一些小的改变,诸如中断久坐(站立一会),可能有助于缓解久坐带来的健康风险。本研究旨在用人体运动能耗监测仪Acti Graph GT3X检测有久坐习惯的成年人(根据BMI分为相同的体重状况)用于站立(用计数阈值测定)、平躺和坐立(用倾角仪功能测定)的时间。方法:受试者包括22名有久坐习惯的成年人(14名男性,8名女性);平均年龄26.5±4.1岁。所有受试者均完成国际体力活动问卷(IPAQ)的自我报告,以此测定受试之前7天坐立的时间。每天坐立7 h及以上者被选取为受试者,用Acti Graph GT3X的测斜仪功能确定不同姿势。受试者须连续7天(每天24 h)携带加速器。按照BMI将受试者分类:18.5-25 kg/m2为正常,25-30 kg/m2为超重,大于30 kg/m2则为肥胖。结果:正常组(n=10)和超重组(n=6)站立的时间(在对MVPA和磨损时间进行调整后)分别为6.7 h和7.3 h,显著多于肥胖组(n=6,5.5 h);坐立时间(分别为7.1 h和6.9 h)显著少于肥胖组(8.0 h,p<0.001)。正常组和超重组站立及坐立时间均无显著差异(p=0.051,p=0.67)。3组的平躺时间也无显著差异(p=0.55)。结论:本研究描述了有久坐习惯的体重正常、超重、肥胖成年人的站立、坐立以及平躺姿势的分配情况。研究结果为通过增加站立时间防止肥胖的策略提供了新的证据。
Background: Overweight and obesity have become serious public health problems in many parts of the world. Research shows that making small changes in everyday life, such as sedentary discomfort (standing for a while), may help to ease the health risks of sedentary people. The aim of this study was to examine adults with sedentary habits (divided into the same weight status based on BMI) using the Acti Graph GT3X, a human exercise energy monitor, for standing (by counting thresholds), lying down and sitting Instrument function determination) of the time. METHODS: Subjects included 22 adults (14 males, 8 females) with sedentary habits; mean age 26.5 ± 4.1 years. All subjects completed self-report of the International Physical Fitness Questionnaire (IPAQ) to determine the time of day 7 days prior to the test. Patients sitting for 7 h or more each day were selected as subjects and their posture was determined using the inclinometer function of the Acti Graph GT3X. Subjects should carry the accelerator for 7 consecutive days (24 h daily). Subjects were classified according to BMI: 18.5-25 kg / m2 was normal, 25-30 kg / m2 was overweight and over 30 kg / m2 was obese. RESULTS: The time to stand (normalized to n = 10) and overweight (n = 6) was 6.7 h and 7.3 h after adjustment for MVPA and wear time, respectively, significantly more than in the obese group (n = 6,5.5 h); sitting time (7.1 h and 6.9 h, respectively) was significantly less than that of the obese group (8.0 h, p <0.001). There was no significant difference in standing and sitting time between the normal group and the overweight group (p = 0.051, p = 0.67). There was also no significant difference in lying-in time between the three groups (p = 0.55). CONCLUSIONS: This study describes the distribution of standing, sitting, and lying positions for normal-weight, overweight and obese adults with sedentary habits. The findings provide new evidence that strategies to prevent obesity by increasing standing time.