Determination of Factorial Validity and Reliability of the Persian Version of the Long Flow Scale in Athletes

The purpose of this study was to determine the factorial validity and reliability of the Persian version of the Long Flow Scale for athletes. For this purpose, 545 athletes were chosen and completed the Persian version of the Long Flow Scale. At first the face validity and translation accuracy were confirmed using back translation technique. To determine the questionnaire´s construct validity based on structural equations model was used; to determine internal consistency, Cronbach alpha coefficient was used, and to determine temporal reliability of the items, intra-class correlation coefficient under test-retest method was used. The results showed that the Long Flow Scale enjoyed favorable fit indexes. Confirmatory factor analysis showed that fit indexes (CFI=0.96, TLI=0.96, RMSEA=0.047), internal consistency (0.75), and temporal reliability (0.85) were suitable. So, the Long version of the Flow Scale can be characterized as a valid and reliable tool to study and evaluate the Long Flow Scale of Iranian athletes.