This is the year of sport: the Euros, the Tour de France, Wimbledon and - of course- London's Olympics, the slogan of which is

Inspire a generation

But however good Team GB's medal haul, how sporty is the generation it's aiming to inspire?

We alreready know that school playing fields have been sold off. How has that affected children's physical activity rates? And is Boris Johnson's call for two hours of PE a day the solution?

The key source for data about engagement in sport is the DCMS survey Taking Part - which has detailed figures out later this month (so we've had to use figures from 2010/11). We've also gathered data from the NHS information centre on physical activity - and the UN's Innocenti Research Centre on childhood physical acitivity.

This is what the data we have so far shows

Obesity cases in hospital are up - but fewer of them are children

Children are more likely to participate in sport than adults

Boys do sport more than girls

Which sports do children do?

Adults do more sport if they played it as a child

How do Britain's children compare to other countries?

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