客观测量的光强生活方式活动和久坐时间与代谢综合征独立相关：一项对日本成年人的横断面研究。
Objectively measured light-intensity lifestyle activity and sedentary time are independently associated with metabolic syndrome: a cross-sectional study of Japanese adults.
机构信息
Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 305-8577, Tsukuba, Ibaraki, Japan.
出版信息
Int J Behav Nutr Phys Act. 2013 Mar 4;10:30. doi: 10.1186/1479-5868-10-30.
BACKGROUND
Reducing sedentary time and increasing lifestyle activities, including light-intensity activity, may be an option to help prevent metabolic syndrome (MetS). The purpose of the present study was to examine whether objectively measured light-intensity lifestyle activity and sedentary time is associated with MetS, independent of moderate-vigorous intensity physical activity (MVPA).
METHODS
The participants in this cross-sectional study were 483 middle-aged Japanese adults, aged 30-64 years. The participants were divided into those with or without MetS according to the Japanese criteria for MetS. A triaxial accelerometer was used to measure light-intensity lifestyle activity [1.6-2.9 metabolic equivalents (METs)] and sedentary time (≤1.5 METs). Logistic regression was used to predict MetS from the levels of light-intensity lifestyle activity and sedentary time with age, sex, smoking, calorie intake, accelerometer wear time, and MVPA as covariates.
RESULTS
The odds ratios (OR) for MetS in the highest and middle tertiles of light-intensity lifestyle activity were 0.44 [95% confidence interval (CI): 0.24 to 0.81] and 0.51 (95% CI: 0.29 to 0.89) relative to the lowest tertile, after adjustment for age, sex, smoking, calorie intake, accelerometer wear time and MVPA (Ptrend = 0.012). Sedentary time was also associated with the risk of MetS (Ptrend = 0.018). Among participants in the highest tertile of sedentary time, the risk of MetS was 2.27-times greater than that in the lowest tertile (95% CI: 1.25 to 4.11). The risk of MetS was not significantly increased in subjects in the middle tertile of sedentary time.
CONCLUSIONS
We found that light-intensity lifestyle activity and sedentary time were significantly associated with the risk of MetS, independent of MVPA. The results of our study suggest that public health messages and guidelines should be refined to include increases in light-intensity lifestyle activity and/or decreases in sedentary time, alongside promoting MVPA, to prevent MetS.
背景
减少久坐时间并增加生活方式活动，包括低强度活动，可能是预防代谢综合征（MetS）的一种选择。本研究的目的是检验客观测量的低强度生活方式活动和久坐时间是否与 MetS 相关，而与中高强度体力活动（MVPA）无关。
方法
本横断面研究的参与者是 483 名年龄在 30-64 岁的日本中年人。根据日本 MetS 标准，将参与者分为有或无 MetS 组。使用三轴加速度计测量低强度生活方式活动[1.6-2.9 代谢当量（METs）]和久坐时间（≤1.5 METs）。使用逻辑回归，在校正年龄、性别、吸烟、热量摄入、加速度计佩戴时间和 MVPA 等因素后，从低强度生活方式活动和久坐时间水平预测 MetS。
结果
在调整年龄、性别、吸烟、热量摄入、加速度计佩戴时间和 MVPA 后，最高和中间三分位的低强度生活方式活动与最低三分位相比，MetS 的比值比（OR）分别为 0.44（95%可信区间（CI）：0.24 至 0.81）和 0.51（95%CI：0.29 至 0.89）（Ptrend=0.012）。久坐时间也与 MetS 的风险相关（Ptrend=0.018）。在最高久坐时间三分位的参与者中，MetS 的风险是最低三分位的 2.27 倍（95%CI：1.25 至 4.11）。中间久坐时间三分位的受试者 MetS 风险无显著增加。
结论
我们发现低强度生活方式活动和久坐时间与 MetS 的风险显著相关，而与 MVPA 无关。我们的研究结果表明，公共卫生信息和指南应加以完善，除了促进中高强度体力活动外，还应包括增加低强度生活方式活动和/或减少久坐时间，以预防 MetS。
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