This paper considers the issues raised by the reuse of existing learners profiles. Indeed, heterogeneity of learners profiles, both structure and content wise, makes difficult their reuse in a system which haven't created them. A profiles modeling language (PMDL) is proposed in the aim of sharing and reusing profiles. Throughout this paper, the example of an existing profile is used to illustrate our propositions. A deployment of this language within a computerized environment have been carried out, which permitted to assess these propositions. Finally, evaluations are presented: one focused on PMDL language expressive power and the other on its deployment.