Reliability and Validity of the Lower Extremity Motor Activity Log in Persian People with Ankle Sprain

Introduction: Ankle sprains are among the most common injuries that affect functional mobility, lower extremity function, and health status. Access to a reliable measurement tool to assess diverse real-world lower extremity use in patients with ankle sprains is essential. Researchers have developed several measures to determine rehabilitation goals and assess the effects of therapeutic interventions. This study aimed to translate the original English lower extremity motor activity log (LE-MAL) into Persian and investigate the psychometric properties of the Persian version. Materials and Methods: The LE-MAL was translated into Persian and adapted to Persian culture. A total of 140 patients with ankle sprains completed the Persian LE-MAL, lower extremity functional scale (LEFS), and life space questionnaire (LSQ). The Persian LE-MAL was re-completed by participants with an interval of two weeks, and internal consistency, test re-test reliability, and construct validity were assessed. Results: The Persian LE-MAL exhibited good internal consistency (Cronbach’s α=0.95) and test re-test reliability (intraclass correlation coefficient [ICC]=0.76). The construct validity of the Persian LE-MAL was demonstrated to be acceptable, as a result of its significantly strong correlations with the LEFS and LSQ (0.74< r <0.77). The standard error of measurement was less than 10% of the total instrument score (standard error of measurement [SEM]=0.43), and the minimal detectable change was 1.2. No ceiling or floor effects were observed. Conclusion: The Persian version of the LE-MAL is a valid and reliable measure to assess lower extremity function in individuals with ankle sprains.