Validity and reliability of a new portable and cost-effective photoelectric cells device for measuring vertical jump performance: "The ADR Jumping" - Rodrigo-Carranza, V.; Lopez-Torres, O.; Fernandez-Elias, V. E.; Gomez-Ruano, M.-A.; Guadalupe-Grau, A. (Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 2025)