'Gap in fitness levels between young girls and boys is worrying'

Boys in Irish secondary schools are 42 per cent fitter than girls.

New research for the Irish Life Health Schools Fitness Challenge suggested girls in Ireland were less likely than boys to meet the minimum current physical activity recommendations for optimal health.

But what is the reason behind this and should we be worried?

Leading sports scientist and Scotstown native Professor Niall Moyna spoke to Northern Sound's Tessa Fleming.