I posted a few studies that proved HIIT is the best way to burn fat a few weeks ago.
Alwyn Cosgrove has posted a new article on his blog about a newly published study with more evidence and some really solid figures.
Trapp EG, Chisholm DJ, Freund J, Boutcher SH.
The effects of high-intensity intermittent exercise training on fat loss and fasting insulin levels of young women.
Int J Obes (Lond). 2008 Jan 15; [Epub ahead of print]
There was no difference in total energy expenditure (calories burned) during the exercise period between the two groups over the 15 week period…the steady state group saw no loss in body fat (on average - the group gained 1lb), while the interval group had a significant reduction in total body mass, fat mass (11.2%), trunk fat and fasting plasma insulin levels.
The regular cardio group showed a 10.5% increase in abdominal fat!