THERE is no guarantee physical activity levels will increase in Scotland as a result of the Commonwealth Games, a key official has admitted.

Paul Zealey, head of engagement and legacy at Glasgow 2014, said while much had been done to make the most of the sporting opportunity, he could not promise widespread change in exercise levels. Research has shown that major sporting events in other countries did not alter the lifestyles of the population.

Analysis following the London Olympics in 2012 found a slight decrease in the number of people participating in sport three times a week after the event.

Speaking from the National Physical Activity and Health Alliance (PAHA) Conference in Edinburgh yesterday, Mr Zealey said: "We are in a very good position to be better. We are still not in a position that will guarantee there is a longterm physical activity legacy from the games."

Mr Zealey said there had been investment in areas such as sports coaching and Scotland has seen "a very significant increase" in the number of young people who are members of sports clubs.

Glasgow 2014 is also working with partner organisations to promote non-sporting activities, such as walking, he said.

Mr Zealey added: "What we have done is learn from the experiences of other global sporting events."

Professor Mike Weed, of Canterbury Christ Church University, researched the impact of London 2012. He said one of the mistakes made was to assume the games themselves would encourage people to take up exercise. Instead he said investment was needed to stimulate interest.

Shona Robison, cabinet secretary for sport, also addressed the PAHA conference, at Murrayfield stadium. Ms Robison said: "We are certainly ready to welcome the world this summer. It is an opportunity for Scotland to shine on the world's stage."

However, she added that the lasting legacy could not be left to chance. She said: "We know major sporting events themselves do not necessarily lead to behaviour change and it is the energy that surrounds it."