A few sources which suggest the possibility (note, I’m citing western research in the final example- call Guiness)
http://anton.free.net.ph/hypertrophy_hyperplasia.pdf
http://74.125.47.132/search?q=cache:C_C7heLM3C0J:www.sportsci.org/encyc/drafts/Muscle_hyperplasia.doc+skeletal+muscle+hyperplasia&cd=7&hl=en&ct=clnk&gl=us
Skeletal muscle fiber hyperplasia - PubMed