Resistance training increases the cross-sectional area of the muscle fibers, which is consistent with improving strength overall.
Nilsen TS, Thorsen L, Fossa SD, Wiig M, Kirkegaard C, Skovlund E, Benestad HB, Raastad T. 2015. Effects of strength training on muscle cellular outcomes in prostate cancer patients on androgen deprivation therapy. Scandinavian journal of medicine & science in sports [epub ahead of print] 17 August 2015. www.ncbi.nlm.nih.gov/pubmed/26282343