Environmental sustainability is an imperative topic in contemporary business-related research, aiming to understand and predict how individuals' environmentally friendly behaviors can be encouraged. This research aims to empirically examine the relationship between individuals' pro-environmental attitude and pro-environmental behavior; and to compare two groups of individuals that encompass emotional and cognitive links to environmental sustainability: emotionally involved sport fans and socially conscious university students. Two studies, involving more than 1400 respondents, were conducted. Study 1 uses structural equation modelling (SEM) to test the relationship between consumers' environmental attitudes and environmental behaviors. Study 2 uses SEM multigroup analysis to compare the attitudes and behaviors of sport fans and university students. The results showed that participants’ pro-environmental attitude had a positive and significant effect on pro-environmental behavior. The type of consumer plays an important role in strengthening the relationship between pro-environmental attitude and pro-environmental behavior. Despite the higher average levels of pro-environmental attitude and pro-environment behavior evidenced by the sport fans, the influence of attitude on behavior is higher on socially conscious students, the group with a more cognitive and intrinsic link with the natural environment and sustainability initiatives. Despite the positive link attitudes-behaviors, empirical insights suggest that the connection between sport fans and the club is vital to reinforce the commitment with a stronger match between attitudes and behaviors. The findings also have implications for practitioners and policymakers in optimizing their strategies to encourage effective pro-environmental actions.

Purpose: The purpose of this research is to examine fans' perceptions of pro-environmental sustainability initiatives promoted by a professional sport club and the ensuing effects on a triple bottom line (TBL) approach (i.e. fans' socially, environmentally and economically favourable behaviours).Design/methodology/approach: Data were collected in two different steps using an online self-administered questionnaire (n1 = 1,043; n2 = 2,167) distributed to fees-paying members registered in the club's database. The analysis was carried out though structural equation modelling.Findings: The results indicate good psychometric properties of the scale used to measure fans' perceptions of a club's pro-environmental sustainability initiatives (perceptions of pro-environmental sustainability initiatives in sports; p-PESIS). Additionally, there is a positive effect of p-PESIS on fans' social behaviours as well as on their daily environmental actions. Furthermore, p-PESIS also shows a positive effect at improving fans' economic activities towards the club.Originality/value: Extending previous research, the authors tested a scale to measure fans' responses to pro-environmental sustainability initiatives in sport and examined their links to the TBL dimensions. Pro-environmental sustainability initiatives in sport benefit not only the club itself (by reinforcing fans' activities with the club) but also society as a whole, as it can promote fans' conscientiousness and likelihood to behave in environmentally and socially favourable ways.