The aim of this study was to compare the role of cost, time and attractiveness in predicting the participation level of the students of Tehran universities during their leisure time physical activities. This study is an applied and descriptive correlational survey study. The study population included students at public universities of Tehran. The sample consisted of 390 individuals who had chosen by the Morgan Table in the multistage cluster and randomly. The instrument of study was a Researchers developed questionnaire that was included 42 items. Its validity was confirmed by sports management and communication experts. To assess the reliability of questionnaire a pilot study was done on 30 students using Cronbach's Alpha was equal to the average reliability 0/87.Data analyzing was done by K-S test, binary logitregression analysis and T-test according to variable conditions. The most important findings were that the only attractiveness (the facility and fields of recreational sports) factor predicted the level of student participation in leisure-time physical activities. Obtained odds ratio (OR = 1.073) is indicating an increased level of participation with increasing attractiveness rates simultaneously. The results showed that the Constraining effect of cost and time was adjusted by attractiveness.

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