Because according to studies conducted inside and outside Iran, several factors are involved in the development issues of teenagers and this age group can be useful for the future of the society; For this reason this age group are important for research topics. The purpose of this research was to study the relationship between diet and perceived motor competence of gifted and normal high school students in the post-COVID-19 Era in Arak city. The participants were 384 male and female students from the 10th to 12th grades of second high school period who were selected randomly from normal public high schools (284 people) and by snowball method from the gifted high schools (100 people) of Arak city. Also this study is a descriptive correlational type. After obtaining the necessary permits and signing the cooperation consent forms in this research by the participants, the tools used for data collection were demographics questionnaire, food frequency questionnaire and teenagers' perceived motor competence questionnaire. The results of Pearson's correlation coefficient showed positive and weak significant relationship between diet and perceived motor competence (r = 0.063 ; p = 0/021). The conclusion of this study is that there is a significant difference in diet between gifted and normal school students, and there is no significant difference in perceived motor competence between gifted and normal school students.