For the purpose of weight-loss of overweight adolescents, subjects were divided into the experimental and
control group. For the two groups, 48 students, among a total of 520 second-grade students in a girls’ high school in M
city. Data in this study were collected during a period of 4 months from March to June, 2008. The collected data were statistically
processed by SAS Package program and analyzed with wilcoxon two-sample test and ANOVA. The results are as
follows: 1) There was no statistically significant difference between the two groups in weight-related features are homogeneous.
2) There were no statistically significant difference between the two groups in rational thinking, dietary self-efficacy,
sentiment toward exercise and regimen. 3) There were statistically significant difference was shown in rational thinking,
dietary self-efficacy, sentiment toward exercise and regimen after testing the influence of change for each experiment
period. 4) There was no statistically significant difference between the two groups in weight index, but statistically significant
difference was shown in the state after testing the influence of change for each experiment period.