Similar behavior was observed between the two groups treated , with statistically significant increases between the first and second test of the following variables : FVC ( 59 % in CG and 35.2 % in TG ) ; MIP ( 8.6 % in CG and 53.5 % in TG ) , MEP ( 28.8 % in CG and 40.7 % in TG ) and 6MWT ( 44.5 % in CG and 31.4 % in TG ) .