In order to gather the required data, 20 female students between 9 to 10 years old of Jahrom are selected. After calls
in all elementary schools of Jahrom, some families have accepted to participate in the study. The selected cases are
divided into two groups (10 for each) which are training and controlling groups.
All selected subjects had a complete physical health. After selecting the participants, informed consent was obtained
from their parents. The demographic characteristics of the subjects are presented in Table 1. The results of t-test
have shown that the two groups have homogeneous age, height, body mass and body mass index (BMI)