This study aims to compare the effects of multitask (MTT; multiple tasks performed simultaneously) and multicomponent training (MCT; various types of exercise performed sequentially) on processing speed, cognitive functions, gait speed, and balance functions in persons with mild cognitive impairment. Forty-two persons with mild cognitive impairment were randomly allocated to MTT (n = 21) or MCT (n = 21). Outcome measures included processing speed, cognitive functions (attention and executive functions), single-task gait speed, dual-task gait speed (DTGS-Arithmetic and DTGS-Verbal), and balance functions. Processing speed (except inhibition), cognitive functions, gait speed, and balance functions improved in the MTT and MCT groups following training, with no significant differences between the groups in processing speed or cognitive functions. The MCT group improved more on single-task gait speed (F = 15.097; p = 0.000; r = 0.270) and DTGS (DTGS-Arithmetic; F = 10.594; p = 0.002; r = 0.214), while the MTT group improved more on balance functions (F = 4.366; p = 0.043; r = 0.101). MTT and MCT strategies can be used to improve cognitive and physical outcomes in persons with mild cognitive impairment.

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