这项由“公共政策调查”机构开展的全国性调查于上月26日和27日进行，共有452名雇员参与。
The nationwide survey was conducted by Public Policy Polling on September 26 and 27.
研究人员评估了一个瑞士的大型公共牙科保健机构的177名雇员，他们将人们分成几组：其中一组每周锻炼两个半小时；
Researchers evaluated employees at a large Swiss public dental health organization. Of the 177 participants, one group exercised two and a half hours during the work week;
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