Equity markets also turned higher, after initially dropping steeply, after Bernanke said the US central bank has "a range of tools" it could use to boost the US economy. He said it was critical for the US economy's health to reduce long-term joblessness and he also expressed long-term optimism.

The Canadian dollar initially weakened to a one-week low against the greenback at C$0.9923 to the US dollar, or $1.0078, shortly after Bernanke's comments.

But by 2:38 p.m. (1838 GMT), the currency had rebounded to C$0.9845 to the US dollar, or $1.0157, up from C$0.9868 to the US dollar, or $1.0134, at Thursday's close.

"The chance of Bernanke coming through with an actual policy recommendation was quite small," said David Tulk, chief Canada macro strategist at TD Securities.

"Initially, as expected, markets reacted negatively, only to realize that no harm had been done either, so they resumed their ascent."

But the turn in sentiment was not full-fledged as safe-haven assets still found some favor. The price of gold rose and government bonds, including Canada's, were flat to higher.

The two-year bond was flat, yielding 1.000 percent, while the 10-year bond edged up 10 Canadian cents to yield 2.394 percent.

Copyright Reuters, 2011