Thought I would contribute a couple of references I thought relevant to the discussion. First, myostatin deficient mice had hypertrophy prior to satellite cells recruitment.
http://www.ncbi.nlm.nih.gov/pubmed/22393251
It seems to add credence to the the theory of satellite cells being required to keep the DNA/protein ratio within certain limits.
Also, it seems that SRF or serum response factor is involved in this.
http://www.plosone.org/article/info%...l.pone.0003910
Hope this helps!
