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To determine the reliability of the KINARM robot in assessing sensorimotor and neurocognitive function in athletes.Test-retest reliability.Sport Medicine Clinic.Thirty-nine randomly selected athletes (mean age: 18±3 years) over 2011–2012 and 2014–2015 seasons.Sixty-three parameters from five robotic tasks (Visually Guided Reaching, Position Matching, Object Hit, Object Hit and Avoid, and Trail Making B) characterising sensorimotor and neurocognitive function. Each athlete was tested three times, with an average of 43±27 days between baseline (BL) and first retest (R1), and 306±32 days between R1 and second retest (R2). Reliability was assessed by intra-class correlation coefficients (ICCs) between BL and R1, and R1 and R2. Change in task performance between assessments was also evaluated with multivariate analysis of variance (MANOVA) and post-hoc comparisons within specific task parameters.ICCs ranged from −0.03 to 0.94 and −0.52 to 0.93 for BL to R1 and R1 to R2, respectively. ICCs were moderate to high (≥0.5) for 46 of 63 parameters (68%) from BL to R1, and 48 of 63 parameters (76%) from R1 to R2. MANOVAs and post-hoc comparisons indicated improvements in performance on 12/63 parameters (19%) between BL and R1, and changes in performance on 11/63 parameters (17%) between BL and R2. No significant changes were revealed in parameter performance between R1 and R2 sessions.Overall, results suggest moderate to good test-retest reliability for the majority of KINARM robot task parameters in measuring baseline sensorimotor and neurocognitive function in athletes.Brian W Benson In the future may receive a small royalty from BKIN Technologies Ltd. in consideration for assisting with development and validation of the KINARM end-point robotic device for use in acute sport concussion assessment and management.None.Stephen H Scott Co-founder and CSO of BKIN Technologies that commercialises the KINARM robot.