Effects of a Dual-Task–Based Integrated Physical and Cognitive Program for Older Adults: A Case Study of the Auxiliary Use of OpenCap

This study employed a gamification-based integrated physical and cognitive program for older adults to examine the applicability of kinematic assessment using a markerless motion capture system (OpenCap). The program was designed as a step-based dual-task intervention with progressively adjusted difficulty to simultaneously stimulate physical and cognitive functions. Nineteen older adults participated in the study, which evaluated their lower limb strength (Five Times Sit-to-Stand Test), dynamic balance (Four Square Step Test), curved walking ability (Figure-of-8 Walk Test, F8WT), cognitive function, and program satisfaction. Significant reductions in completion time were observed across all physical performance tests, indicating improvements in lower limb strength, dynamic balance, and curved walking ability. Cognitive function also showed significant im-provements. Kinematic analysis using OpenCap found a significant increase in knee joint angular velocity at the midpoint of the movement, but not in joint range of motion. In addition, high attendance and satisfaction levels were reported. These findings suggest that gamification-based offline interventions may be effective in enhancing both physical and cognitive functions in older adults and that markerless motion capture technologies like OpenCap can facilitate process-oriented movement analysis in digital healthcare environments.