This is a topic that inevitably comes up because figure skating is a sport that needs to balance finesse and aerodynamics with strength and power. Based on some users' suggestions, I'm gonna start a separate thread to talk about it because not everyone wants to read it and so it doesn't derail other threads.
Here are a couple of basic links I found about sports nutrition from USFSA:
http://www.usfsa.org/content/2008 Elite Coaches Seminar-Nutrition.pdf
https://www.usfigure