Myostatin Inhibition increases muscle mass in mice 90%

GDF11 is 90% homologous to myostatin

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3011861/

Body building increases muscle mass

Inhibiting Myostatin (using FST and FSTL3) can also inhibit GDF11
Does heavy exercise inhibit myostatin?
Does heavy exercise cause GDF11 which in abundance binds where myostatin would have?