Validity and reliability of the my jump® 2 app to measure vertical jump performance in beach volleyball players - Pereira de Souza, L. A.; Freitas Nunes, J. T.; Ghedini Gheller, R.; Martins de Souza, G. P.; Libardoni dos Santos, J. O.; de Souza Bezerra, E. (Apunts Sports Medicine, 2025)