As an undergraduate student (four or five degrees ago), I was a trainer in a small "Ma and Pa" gym. I always got more questions regarding nutrition than actual training, so I went ever-further in that direction.
You know, come to think of it, this seems odd since most interest here on T-Nation tends to lean toward training programs.
My own research interests deal with recovery from eccentric exercise, overtraining, and nutritional interventions to support hard-training athletes in this way. Nutrient partitioning/ body composition alterations and dietary lipids are long time interests, too.
I'm not actively performing any research at present but rather am focusing my efforts on athletes directly. These projects may generate data that someday get analyzed (thus becoming "research") but for now, I'm out to educate and boost health/ performance.