Sal de Rellán, AlejandroBen Brahim, MehdiMartín, VíctorZidi, NajetHernáiz Sánchez, Ariadna2025-10-112025-10-112025Sal-de-Rellán, A., Ben Brahim, M., Martín, V., Zidi, N., & Hernaiz-Sánchez, A. (2025). How Different Physical Qualities Influence Repeated Sprint Ability Tests in Elite Youth Soccer Players? Journal of Human Kinetics. https://doi.org/10.5114/jhk/2038321640-5544https://hdl.handle.net/11268/16379The aim of this study was to examine the relationships between different repeated sprint ability (RSA) tests and to determine whether all RSA tests were related to the same physical qualities. These findings may help coaches and sports scientists optimize training and performance assessment by identifying the most suitable RSA test for specific variables. In addition, training focused on improving different physical qualities can positively impact RSA performance.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article10.5114/jhk/203832open accessCiencias socialesDeporteCompetencia deportivaGoal 3: Ensure healthy lives and promote well-being for all at all agesGoal 4: Quality educationGoal 17: Partnerships