SPORTING fans who fill up on pints and pies at half-time would need to exercise for hours to burn off the calories, a charity has warned.

Experts from the World Cancer Research Fund (WCRF) rated the nutritional value of foods sold at sporting venues and found many could take their toll on people's health over time.

A 233g steak pie contains 534 calories, 29.7g of fat and 2.3g of salt. Fans would need to run for 47 minutes to burn it off, walk for two hours and nine minutes or work in the garden for almost an hour-and-a-half.

A pint of lager has 173 calories and fans would need to run for 15 minutes, walk for 42 minutes or do 28 minutes, gardening to burn it off. Meanwhile a hot dog has 229 calories and 7.4g of fat and requires a 20-minute run, a 56-minute walk or a 37-minute spell in the garden.

The calculations were made using the WCRF's new exercise calorie calculator. The online tool can be found at www.wcrf-uk.org/exercisecalories.

Kate Mendoza, head of health information at the WCRF, said: "It would be great to see sports venues offering a wider range of healthy choices."