Background The influence of psychological factors on injuries in female handball and basketball is poorly documented.
Objective The aim of this study was to examine the influence of psychological factors on injuries in female handball and basketball players, especially for non-contact anterior cruciate ligament (ACL) injuries.
Design Case control study.
Setting and Participants A three-year prospective cohort study has been initiated in Japanese young female handball and basketball players to identify risk factors for non-contact ACL injuries. At baseline, 99 of 104 young female players (handball: 30 players, basketball: 69 players, age;15–16 years) were asked to complete a detailed questionnaire covering player history, previous injuries, KOOS, personality and psychological-competitive ability using the Y-G personality questionnaire and questionnaire for diagnostic inventory of psychological-competitive ability score (DIPCA-3).
Results There were no correlation between KOOS and DIPCA-3, and no significant differences were found between handball players and basketball players. There were no significant differences between previously injured and non-injured players in the score of KOOS and DIPCA-3. The players evaluated as D (director) type by the Y-G personality questionnaire scored significantly better result in DIPCA-3 than the A (average), B (burst), E (engineer) type (p=0.0128, p=0.001, p<0.001, respectively).
Conclusion Since perceived mastery climate has been reported as a significant predictor for new injuries, the players who has high psychological-competitive ability evaluated as D type may be the injury-prone athletes. Prospective follow-up is necessary to elucidate whether high psychological-competitive ability is a risk factor for ACL injury or new injury.