Seen as a psycho-social products, motivation, attitudes and the view of life depends on the education, socio-cultural environment etc. The individual’s personality marks his activities, motivations and interests, as it ensures the direction and dynamics of the participation to it. Within the group, the individual seeks to satisfy personal needs, in agreement with the achievement of the ... [Show full abstract] organizational goals. The level of motivation of the individual is determined by the action of several factors, and the contribution of each member of the group's performance is different. We aim to assess the level of motivation of the members of sports groups. The research sample was composed of athletes (N=158, 55 females, 103 males) from the sports groups within the city of Iasi, part of the first and second sports divisions (basketball, football, handball, rugby, and volleyball). The respondents answered to a adapted to the Romanian population 32-item questionnaire; the items were grouped into four factors: leadership (power needs), expertise / performance (achievement needs), bonding (affiliation needs, subsistence (existence needs). The homogeneity instrument was assessed for the entire scale, as well as independently for each factor. The lack of variance homogeneity made it impossible to get outcomes for the interaction of the independent variables such as the type of club and the status. No gender-based differences were found regarding the power needs. If the type of club does not influence the expert/performance factor, have identified a partial influences of this variable over the bonding factor. Professional athletes are more motivated to achieve the performance than semi professional athletes.