Sport specialization and sport motivation in middle school-aged athletes - Biese, K. M.; Winans, M.; Rudek, G.; Cadmus-Bertram, L.; Andreae, S.; Brooks, M. A.; Kliethermes, S.; McGuine, T. A.; Bell, D. R. (Journal of Athletic Training, 2024)
Keywords: junior elite sport; sports for children and youths; specialisation; sport; motivation; sport psychology; experience; attitude; performance factor; USA; junior sports; social sciences