Age-Related Differences in Gait Strategies Under Dual-Task Conditions: A Pilot Study

This pilot study examines age-related differences in gait under single- and dual-task conditions using OpenCap, a video-based motion capture system. Twenty-six participants (19 young, 7 older) completed treadmill walking at individually preferred paces while under three conditions: single-task walking, motor dual-task walking (carrying a cup), and cognitive dual-task walking (serial subtraction). Gait kinematics were compared across conditions and age groups. Results showed that both dual-task conditions negatively impacted gait, with cognitive loading triggered elevated stride-to-stride fluctuations and compromised dynamic equilibrium, especially in older adults. These results indicate that cognitive demands pose a substantial challenge to gait regulation in older adults, highlighting the need for targeted strategies in assessing and preventing falls.