In traveling through the Gnomish Mines, it seems pretty easy to quickly become overloaded with gear. However, I normally try to stash all of this stuff in a safe place for selling and/or using later.
An issue that I have been noticing though is that when I deck my character out with a sweet outfit won from the dwarves and gnomes is that I am typically at a 'burdened' status. I am wearing a mithril coat, helmet, gloves, and shoes (not iron shoes, just normal shoes or hiking boots). My inventory is really not that full either, I have some food, scrolls, wands, and a few knives and darts for throwing.
I am assuming that my equipment I'm wearing is what's hurting me....is there a good way to train my strength/constitution so that I am not burdened any longer?