Many weightlifters as in the Olympic lifts, use Caffeine and say that is helps lift bigger weights. Not sure if that would have anything to do with DHT, more likely is a neuro-muscular amplifying thing. Jacks the cNS and whatnot.
Yes, well DHT also stimulates the central nervous system promoting increase in strength. I also experimented with DHT only compounds in the past and noticed the same thing in terms of strength. Hence why a lot of MMA fighters get caught with DHT derived steroids all the time (masteron for example). You won't put any weight on (since it doesn't aromatize) but your strength shoots through the roof.
So anything that stimulates the central nervous system in general could benefit for strength.