Subjective feelings of mental fatigue differs between competitive phases in semi-professional soccer - Diaz-Garcia, J.; Rubio-Morales, A.; López-Gajardo, M. A.; Ponce-Bordón, J. C.; García-Calvo, T. (27th Annual Congress of the European College of Sport Science (ECSS), Sevilla, 30. Aug - 2. Sep 2022, 2022)