we all know that too little exercise can pack on the pounds and contribute to heart disease and other ills, but a new study published in the european heart journal on jan. 12 shows that we can even cause ourselves harm simply by sitting for too long without moving. and what office worker doesn't spend much of the day in that position?

　　大家都知道，运动过少会使得体重增加，从而增大了患上心脏及其他方面的疾病，但据一项最新的医学报告指出，久坐不动其实对于我们的身体健康也会造成伤害，然而上班族坐办公室，还能有其他的姿势么?

　　the study was the first to look at the heart health consequences of prolonged sitting among a large and diverse group. researchers collated data from 4,757 participants who were all part of the u.s. national health and nutrition examination survey between 2003 and 2006.

　　这份报告是首次大规模地探寻了心脏健康以及长时间保持坐着状态之间的因果关系，研究人员收集整理了在2003年到2006年间参加美国全国健康和营养调查的4757名受访者的相关数据。the subjects wore accelerometers which measure the intensity of their physical activity 14.6 hours a day for seven days. investigators then measured waist circumference, blood pressure, cholesterol levels and c-reactive protein concentrations to determine heart health. in a subset of the group, they also measured markers of diabetes: levels of triglycerides, plasma glucose and insulin.

　　受测者携带了运动测量仪器，以测取他们在七天之内14.6小时之中的运动量。研究人员还分别测量了他们的腰围、血压、胆固醇水平以及反应蛋白浓度，通过对于这些数据的分析来确定受测者的健康水平。他们还另外测量了一组人的尿样以分析甘油三酯、血糖和胰岛素水平。

　　the results were unmistakable: prolonged sedentary periods led to larger waist sizes and higher levels of blood fats, even if subjects participated in regular sessions of moderate to rigorous exercise outside of their inactive hours. so who fared the best? those who did both regular exercise and took breaks to stand or walk at regular intervals.

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（实习编辑：高奕飞）