The association between cognitive function and physical performance in established users of a lower limb prosthesis

Area of Science:

• Rehabilitation Medicine
• Neuroscience
• Biomechanics

Background:

• Cognitive abilities significantly influence mobility in individuals with amputation.
• Understanding this relationship is crucial for effective rehabilitation strategies.

Purpose of the Study:

• To investigate the association between cognitive function and physical performance.
• Focus on established users of lower limb prostheses.

Main Methods:

• Prospective cross-sectional study with 62 lower limb prosthesis users.
• Assessed cognitive function using the Montreal Cognitive Assessment.
• Evaluated physical performance with Timed Up and Go Test (single and dual-task), Four Square Step Test, and 3-m Backward Walk Test.

Main Results:

• Global cognitive function, measured by the Montreal Cognitive Assessment, was independently associated with physical performance.
• Specifically, cognitive function correlated with dual-task Timed Up and Go Test, Four Square Step Test, and 3-m Backward Walk Test.
• Higher cognitive scores correlated with better performance in these physical tasks.

Conclusions:

• Cognitive function is independently associated with functional mobility under dual-task conditions, dynamic balance, and backward walking in prosthesis users.
• Cognitive function should be considered in interventions to improve physical performance for prosthesis users.