Only the 2-h aerobic exercise bout resulted in a significant amplification of GH secretion as evidenced by increases in GH burst peak amplitude ( 100 % ) , basal GH secretion rate ( 127 % ) , total GH basal secretion ( 120 % ) , total pulsatile secretion ( 88 % ) , and total GH secretion ( 89 % ) over the control ( i.e. , no exercise ) condition .