NEW YORK (Reuters)

International Olympic Committee chief Jacques Rogge said yesterday that a monitoring system would be set up in Beijing to gauge whether air pollution warranted delaying events at next year's Games.

Events that involve endurance, such as the marathon or cycling distance races, could be delayed for a few hours or until another day, Rogge told reporter.

Outlining how officials would monitor air quality, the IOC president said: "Together with the Chinese we are setting up a whole series of test sites, more than 20 in Beijing will give us information online.

"The idea is in the middle of the night, in the early hours, an assessment will be made every day, an analysis to see whether a threshold is broken.

"If that is the case we will discuss it with the relevant international federation.

"Staying and residing in Beijing for young athletes in good health is not an issue. It's not a danger issue.

"The only possibility that could be a danger for health is sustained exposure to air pollution in long-distance endurance sports.

"During a marathon for more than two hours, riding a bicycle race for five to six hours - that could be a danger hazard and then we would postpone the race."

Though pollution remained a question mark, Rogge forecast a successful Games.

"I think you will hold your breath and will be breathless - not by pollution but by the quality of the events," he said.

With China's burgeoning economic growth, pollution levels in Beijing have risen dramatically since 2001 when the city was awarded the 2008 Olympics, Rogge said.