PURPOSE: To investigate the feasibility, safety, and effects of dual task (DT) in a mixed physical exercise protocol on mobility under DT in stroke survivors. MATERIALS AND METHODS: Twenty-six chronic mild-impaired stroke survivors (age 51.57 +/- 12.55; men = 13, women = 13) were randomly assigned into experimental group participating in a 15-week mixed (aerobic and resistance exercises performing a cognitive DT condition simultaneously) physical exercise protocol (30 sessions, 2x/week, duration of 60 to 90 min), and control group engaged in the same protocol without DT. Feasibility and outcome measures were assessed before and after the intervention and in a 5-week follow-up. RESULTS: DT physical exercise protocol was viable and safe. This protocol also improved mobility and gait when performed under DT, which was not found in the control group. DT does not influence aerobic resistance, strength, and balance responsiveness. It does not present any improvement in cognition, self-efficacy for falls, and quality of life. CONCLUSION: The results indicate that mixed physical exercise under DT is feasible and safe for mild-impaired stroke survivors. Stroke survivors demonstrate more significant improvement in the mobility performance under DT when submitted to a DT mixed physical exercise protocol than the standard physical exercise intervention. TRIAL REGISTRATION: Brazilian Clinical Trials Registry (RBR-4mvzz6); WHO trial record (U1111-1198-7173).

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