Task requirements and their effects on imagined walking in elderly

Area of Science:

• Neuroscience
• Gerontology
• Motor Control

Background:

• Mental training can improve motor performance and behavior in older adults.
• Previous studies indicated age-related declines in motor imagery (MI) ability, questioning its applicability in older populations.
• Task complexity may influence MI performance in aging individuals.

Purpose of the Study:

• To assess motor imagery (MI) performance in older adults across various walking task requirements.
• To investigate potential age-related differences in MI ability and its controllability.
• To determine the feasibility of mental training interventions for older adults.

Main Methods:

• Compared MI performance in 20 older adults (mean age 70.75) and 22 younger adults (mean age 24.31) using a mental chronometry paradigm.
• Participants performed four distinct walking tasks (straight line, direction changes, uneven ground, switch flipping) from a first-person perspective.
• Assessed MI controllability using the Controllability of Motor Imagery Test and collected self-rated clarity data.

Main Results:

• No generalized age-related alterations in MI for walking tasks with varying requirements were observed.
• Older adults exhibited altered ability in mentally imagining body postures, but this was dissociated from self-rated clarity.
• A significant Age × Condition × Task interaction was found, though not attributable to specific task demands in post-hoc analyses.

Conclusions:

• Older adults retain motor imagery (MI) capabilities for familiar movements, challenging prior assumptions of age-related decline.
• Mental training focused on familiar movements appears feasible and promising for older adults.
• Findings support the development of novel intervention strategies to enhance motor function in aging populations.