Hmm, it should be in reverse..if you are an economics grad, with a good understanding of macroeconomics, then yes, you can put that knowledge to good use. But trading as a help add on for studying a course, sorry, not much. For one, trading and analyzing the market is going to take up a big chunk of your time and of course, that depends on whether you're a serious trader.
But all said, trading experience does provide you with a good knowledge of how the market works and how it reacts - still not sure how you would apply the info..as the field is rather limited.