Data collection
multiple injuries, injury to the groin, gradual-onset, time-loss, Trauma
ADVERSE EVENTS
Players responded to baseline and follow-up questionnaires on the use and experience of the IPEPs and adverse events (follow-up questionnaire), most of these data will be presented elsewhere. They also responded to weekly questionnaires about occurrence of injury in any body location based on the Oslo Sports Trauma Research Center (OSTRC) questionnaire (OSTRC-O2),One coach per team responded to weekly questionnaires throughout the season and reported number of team matches and training sessions, number of IPEP sessions and timing of IPEP use (before training, during warm-up, imbedded in training, after training, before matches). Players reported which days the IPEP was used in their weekly questionnaires.All questionnaires were distributed via online software (esMakerNX3 V.3.0) on each Sunday evening with reminders on Tuesday and Thursday the week after. Players who reported time-loss or substantial injury to the groin or hamstrings (sudden-onset or gradual-onset), knee or ankle (sudden-onset) were contacted via telephone by a study physiotherapist who asked about the injury and filled in a standard injury report form. Players could report multiple injuries each week.