Walking while talking: Young adults flexibly allocate resources between speech and gait

Area of Science:

• Cognitive neuroscience
• Human motor control
• Speech production

Background:

• Walking while talking is a well-practiced, cognitively demanding multitask behavior.
• Gait challenge influences the association between cognitive tasks and gait performance.
• Understanding task management in young adults is crucial for assessing cognitive load.

Purpose of the Study:

• To investigate how young adults manage the multitask behavior of walking while talking.
• To examine the effects of systematically manipulated gait challenge on concurrent walking and speaking tasks.

Main Methods:

• Sixteen young adults performed three gait tasks (easy, moderate, difficult) with and without concurrent speech.
• Speech production was assessed via extemporaneous speech while seated for baseline.
• Gait speed and silent pause duration during speech were measured to reflect cognitive processes.

Main Results:

• In easy gait tasks, gait speed decreased, but speech pause duration remained unchanged.
• In moderate and difficult gait tasks, both gait speed and silent pause duration increased.
• Results suggest prioritization of speech over gait speed in easier tasks, and shared cognitive resources in more challenging tasks.

Conclusions:

• Walking while talking is a cognitively demanding activity for healthy young adults.
• Task prioritization strategies adapt to increasing gait challenge.
• Findings align with integrated models of task prioritization in dual-tasking scenarios.