Bandi Utama , Tomoliyus , Fauzi , Hary Widodo 2021. Modification of Reactive Agility Test Measuring Instrument for Table Tennis Performance: Aiken’s Validity and Retest Reliability Test. Turkish Journal of Computer and Mathematics Education (TURCOMAT). 12, 14 (Sep. 2021), 3214–3220. DOI:https://doi.org/10.17762/turcomat.v12i14.10892.