However , they reported that for 1,500 m freestyle , the sex difference increased compared to 800 m freestyle .
increasing race distance from 50 m to 800 m amongst Swiss elite freestyle swimmers ranked on the Swiss high score list between 2006 and 2010 .
Freestyle swimmers reported that for 1,500 m freestyle , the sex difference increased compared to 800 m freestyle .
increasing race distance from 50 m to 800 m amongst Swiss elite freestyle swimmers ranked on the Swiss high score list between 2006 and 2010 .