Gutiérrez-Fisac Juan L, Guallar-Castillón Pilar, Díez-Gañán Lucía, López García Esther, Banegas Banegas Jose R, Rodríguez Artalejo Fernando
Department of Preventive Medicine and Public Health, Consejería de Sanidad de la Comunidad de Madrid, Universidad Autónoma de Madrid, Spain.
Obes Res. 2002 Apr;10(4):270-6. doi: 10.1038/oby.2002.37.
To analyze the association of work-related physical activity (WRPA) and leisure-time physical activity (LTPA) with body mass index (BMI) and obesity in the Spanish adult population aged 20 to 60 years.
The data were taken from the 1993 Spanish National Health Survey. We analyzed a sample of 12,044 men and women representative of the Spanish population aged 20 to 60 years. BMI and frequency of obesity (BMI > or = 30 kg/m(2)) were obtained from self-reported weight and height. Multiple linear regression and logistic regression models were constructed, adjusting for the main confounding factors. WRPA and LTPA were measured by two questions to classify subjects into four categories of physical activity.
Neither mean BMI nor percentage of obesity varied significantly (p > 0.05) by WRPA. Mean BMI was significantly higher (p < 0.01) in those who were inactive in their leisure time (25.90 kg/m(2) in men and 24.43 kg/m(2) in women) than in those who reported vigorous activity (24.42 kg/m(2) and 22.97 kg/m(2) in men and women, respectively). The odds ration (OR) for obesity decreased with increasing level of LTPA in both men (OR of 0.64 for vigorous activity) and women (OR = 0.68), showing a statistically significant dose-response relation in both men (for linear trend, p = 0.0021) and women (p = 0.0245).
These results raise questions about the association between WRPA and obesity and suggest the need to reexamine models of the obesity epidemic that point to automation of the workplace as one of the major explanatory factors.
分析西班牙20至60岁成年人群中与工作相关的体力活动（WRPA）和休闲时间体力活动（LTPA）与体重指数（BMI）及肥胖之间的关联。
数据取自1993年西班牙国家健康调查。我们分析了12044名男女组成的样本，该样本代表了西班牙20至60岁的人群。BMI和肥胖频率（BMI≥30 kg/m²）通过自我报告的体重和身高获得。构建了多元线性回归和逻辑回归模型，并对主要混杂因素进行了调整。WRPA和LTPA通过两个问题进行测量，以将受试者分为四类体力活动水平。
WRPA对平均BMI和肥胖百分比均无显著影响（p>0.05）。休闲时间不活动的人群（男性为25.90 kg/m²，女性为24.43 kg/m²）的平均BMI显著高于报告有剧烈活动的人群（男性和女性分别为24.42 kg/m²和22.97 kg/m²）（p<0.01）。男性（剧烈活动的优势比为0.64）和女性（优势比=0.68）的肥胖优势比（OR）均随着LTPA水平的升高而降低，在男性（线性趋势，p=0.0021）和女性（p=0.0245）中均显示出统计学上显著的剂量反应关系。
这些结果引发了关于WRPA与肥胖之间关联的疑问，并表明有必要重新审视将工作场所自动化视为肥胖流行主要解释因素之一的肥胖流行模型。
