If you're asking if this is generalization to other healthy white men? It seems okay for a first shot. There is no fancy stats in this paper (they just use unpa

If you're asking if this is generalization to other healthy white men? It seems okay for a first shot. There is no fancy stats in this paper (they just use unpaired t-test to look for significance). They measured at two time points (+ the baseline condition) and both "real" (I don't really feel like including the Free T/LH ratio...) measurements that they found significantly different at minus 14 days remained significant (and same direction) at 44 days. The dose response curve seems particularly convincing to me. It does seem that the particular study was centered around a single electrically stimulated exercise session. It would be difficult to try to guess what happens if combined with different (more sustained? more repeated?) exercise. If you're asking if this is generalizable to any other group? No idea. Probably okay to generalize to all healthy men. But that's about it. As for why this is so small? Looks like they just piggy backed on another study. Pretty reasonable use of resources.