Abstract

Background: Task-specific training (TST) is an established rehabilitation approach for improving upper limb function after stroke. However, the optimal dose of repetitive task practice required to maximize recovery remains unclear. Aim: To determine the effect of different doses of task-specific training on upper limb motor recovery in individuals with subacute stroke. Methods: This pilot experimental study included 30 individuals with subacute stroke, allocated into three groups (n=10 each). Group A performed 3,200 repetitions (100 repetitions/session), Group B performed 6,400 repetitions (200 repetitions/ session), and Group C performed individualized maximum repetitions (up to 300 repetitions/session) of functional tasks including eating, drinking, and combing hair. Training was provided four days per week for eight weeks. Outcomes were assessed using the Fugl-Meyer Assessment–Upper Extremity (FM-UE), Action Research Arm Test (ARAT), and Motor Activity Log (MAL). Paired t-tests, oneway ANOVA, and post hoc analyses were used for statistical analysis. Results: All groups demonstrated significant improvements in FM-UE, ARAT, and MAL scores (p<0.05). Between-group analysis showed significant differences in FM-UE (p=0.047), MAL Amount of Use (p=0.041), and MAL Quality of Movement (p=0.035), while ARAT showed no significant difference (p=0.46). Post hoc analysis revealed significantly greater improvements in the individualized maximum repetition group compared with the 3,200-repetition group for FM-UE and MAL outcomes. Conclusion: Higher doses of task-specific training improved upper limb motor recovery following subacute stroke. Individualized maximum repetition training (approximately ≥300 repetitions/session) produced superior improvements in motor impairment and functional arm use, supporting the potential benefit of high-dose rehabilitation. Larger randomized controlled trials are recommended to confirm these findings.

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