After the season, from mid-October to November, every coach
in the intervention group was called to evaluate the complete
warm-up programme and the exercises used, as well as to
assess attitudes and beliefs towards injury prevention training
in general. This retrospective study was based on a questionnaire
designed by the authors, consisting of 28 closed and three
open questions. The questionnaire was standardised using
dichotomous or fi ve-point Likert scale response alternatives
in accordance with questionnaire design guidelines to ensure
reliability and validity.35 All interviews were conducted by a
physical therapist (AN).