Researchers believe the increase in heart rate might demonstrate what they call the fight or flight response.

VOA: special.2009.08.18

The experiment showed that swearing caused people's heart rate to increase.

VOA: special.2009.08.18

"It will continue to be soft, given the fact the rate at which there is price increase,".

VOA: standard.2009.09.19

"We have detected certainly an increase in the past couple of weeks of the rate at which people are being allowed to return home,"

VOA: standard.2009.10.23