King G A, Fitzhugh E C, Bassett D R, McLaughlin J E, Strath S J, Swartz A M, Thompson D L
Department of Exercise Science and Sport Management, The University of Tennessee, Knoxville, Tennessee, USA.
Int J Obes Relat Metab Disord. 2001 May;25(5):606-12. doi: 10.1038/sj.ijo.0801583.
To assess the interaction between leisure-time physical activity (LTPA) and occupational activity (OA) on the prevalence of obesity.
Secondary data analysis of a population based cross-sectional US national sample (NHANES III).
A total of 4889 disease-free, currently employed adults over age 20 y.
Subjects body mass index (BMI) was categorized as (1) obese (BMI> or =30 kg/m(2)), or (2) non-obese (BMI<30 kg/m(2)). LTPA was divided into four categories: (1) no LTPA; (2) irregular LTPA; (3) regular moderate intensity LTPA; and (4) regular vigorous intensity LTPA. OA was grouped as (1) high OA and (2) low OA. Age, gender, race-ethnicity, smoking status, urbanization classification, alcohol consumption and income were statistically controlled.
In all, 16.8% (s.e. 0.7) of the total subject population were obese (15.1% (s.e. 1.1) of men and 19.1% (s.e. 1.1) of women). Logistic regression revealed that compared to those who engage in no LTPA and have low levels of OA, the likelihood of being obese is 42% (95% CI 0.35, 0.96) lower for those who engage in no LTPA and have high OA, 48% (95% CI 0.32, 0.83) lower for those who have irregular LTPA and have high levels of OA, and about 50% lower for all those who have regular LTPA through moderate or vigorous activity levels regardless of OA level.
When considering disease free adults above 20 y of age employed in high and low activity occupations, a high level of occupational activity is associated with a decreased likelihood of being obese.
评估休闲体育活动（LTPA）与职业活动（OA）之间的相互作用对肥胖患病率的影响。
基于美国全国横断面样本（NHANES III）的二次数据分析。
共有4889名20岁以上无疾病且目前在职的成年人。
将研究对象的体重指数（BMI）分为两类：（1）肥胖（BMI≥30 kg/m²），或（2）非肥胖（BMI<30 kg/m²）。LTPA分为四类：（1）无LTPA；（2）不定期LTPA；（3）定期中等强度LTPA；（4）定期高强度LTPA。OA分为两类：（1）高OA和（2）低OA。对年龄、性别、种族、吸烟状况、城市化分类、饮酒量和收入进行了统计学控制。
总体研究对象中，16.8%（标准误0.7）为肥胖者（男性为15.1%（标准误1.1），女性为19.1%（标准误1.1））。逻辑回归分析显示，与无LTPA且OA水平低的人相比，无LTPA但OA水平高的人肥胖的可能性低42%（95%置信区间0.35, 0.96），不定期LTPA但OA水平高的人肥胖的可能性低48%（95%置信区间0.32, 0.83），无论OA水平如何，所有通过中等或高强度活动进行定期LTPA的人肥胖的可能性均降低约50%。
在考虑从事高活动量和低活动量职业的20岁以上无疾病成年人时，高水平的职业活动与肥胖可能性降低相关。
