Validity and reliability of the my jump® 2 app to measure vertical jump performance in beach volleyball players Leandro Augusto Pereira de Souza, Jéssica Thais Freitas Nunes, Rodrigo Ghedini Gheller, Geovanna de Paula Martins de Souza, João Otacílio Libardoni dos Santos, Ewertton de Souza Bezerra

Contextual factors in understanding the jumping performance of young football goalkeepers Gonzalo Fernández-Jávega, Manuel Moya-Ramón, Iván Peña-González

Observational study with the objective of determining possible correlations between GRF and muscle activation at reception after a jump in an ACL injury Alesander Badiola-Zabala, Nuria Massó-Ortigosa, Josep Cabedo-Sanromà, Fernando Rey-Abella, Raimón Milà, Guillermo Ruben Oviedo