Today, the consumption of sports supplements has increased significantly and we have received many reports about how and when to take these types of sports supplements. Therefore, the aim of this research was to investigate the attitude towards the consumption of sports supplements in men's gyms in Isfahan city. The statistical population was considered to include male customers of Isfahan sports clubs. This research was carried out in a descriptive and survey way. In order to measure, a standard questionnaire of attitude towards supplement consumption and a standard questionnaire of reasons for using and not using sports supplements were used. Regarding the sampling method of the current study, since the exact number of male athletes in the gymnasiums of Isfahan city is not available, the unlimited sampling method will be used, and the number of these people was 384 according to the table of Karjesi and Morgan, which is the same number. will be examined in this research. After collecting the required information through the used questionnaires, the available information was analyzed.
The results of the research showed that regarding the reasons for taking sports supplements, success in sports competitions, enhancing sports performance, strengthening the body's immune system, relieving body fatigue, and maintaining health played a greater role. Also, the results of the research regarding the reasons for not taking sports supplements showed that, in order, the items of physical complications, lack of belief in the effect, unavailability of the main supplements and expensiveness had the highest priority. Also, the results of the research on the reasons for not taking sports supplements showed that the items of physical complications, lack of belief in the effect, unavailability of the main supplements, and expensiveness had the highest priority, respectively. Also, the results obtained from this research showed that there are many factors that can influence the lack of tendency to use supplements, the most important of which is accessibility, lack of knowledge and awareness in the use of low-priced sports supplements, role modeling by young people, among the most important of these There have been cases.