1 November 2012 Last updated at 05:01 ET

Russian President Putin's work 'not affected' by injury

Vladimir Putin flew in a motorised hang glider alongside a Siberian white crane in September

Vladimir Putin's spokesman has admitted that Russia's president is suffering from an injury, but denied media reports that it is affecting his work.

Dmitry Peskov said the president had "pulled a muscle", adding that it was sports-related.

Mr Peskov dismissed claims that the injury had got worse after Mr Putin's flight last month with Siberian cranes.

Mr Putin, 60, has recently postponed a series of foreign trips, and media reports suggested he had a back injury.

And in a recent TV documentary made for his birthday, the Russian leader was seen limping.

'Traffic jam' concern

On Thursday, Mr Peskov told Russia's Kommersant FM radio station that his boss indeed had "an old injury".

"It's a common sports injury - Vladimir Putin pulled a muscle," the spokesman said, without adding any details about where the injury was.

The speculation in Russia's media started last week after Mr Putin had put off a summit with other leaders of counties from the former Soviet Union. He has also postponed trips to Bulgaria and Turkey.

But Mr Peskov said that the dates for those visits "have not been fixed".

Kremlin officials earlier denied that the real reason for the much-curtailed schedule is that the president is suffering from a bad back and may need an operation, the BBC's Daniel Sandford in Moscow reports.

Mr Peskov also said the president had hardly left his country house outside Moscow in the past two weeks because he did not like his convoy causing traffic jams in central Moscow.

Mr Putin - a black belt in judo - has over the years portrayed himself as a macho man.

Russia's state-run TV has shown videos of him tagging whales, swimming in freezing waters, horse-riding barechested and even saving a TV crew from a tiger.