The following parameters were measured at baseline and 12 weeks later : ( 1 ) for evaluation of physical fitness : VO2max , muscular endurance , joint mobility and body fat ; ( 2 ) for evaluation of the lipidemic profile : triglyceride , total cholesterol , HDL and LDL levels , and ( 3 ) levels of hormones associated with lactation : prolactin , estradiol , cortisol , TSH , fT3 and fT4 .