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Aging affects motor planning for grasping everyday objects: A case control study.

Guillaume Galliou1, Lucette Toussaint1, Thomas Rulleau2

  • 1Université de Poitiers, Université de Tours, CNRS, CeRCA, Faculté des Sciences du Sport, Poitiers, France.

Plos One
|April 20, 2026
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Summary
This summary is machine-generated.

Older adults experience slower motor planning for object grasping, impacting independence. This decline is linked to reduced manual dexterity and motor imagery skills in aging individuals.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Motor Control

Background:

  • Anticipating object movement for grasping is crucial for older adults' independence and accident prevention.
  • Normal aging's impact on motor planning for everyday object grasping requires investigation.

Purpose of the Study:

  • To investigate how normal aging affects motor planning for grasping everyday objects.
  • To compare motor planning abilities between young and older adults.

Main Methods:

  • Sixty-nine participants were divided into young (18-30 years) and old (65+ years) groups.
  • Assessed motor planning via an object-grasping judgment task.
  • Evaluated manual dexterity (peg placement) and motor imagery (Vividness of Movement Imagery Questionnaire).

Main Results:

  • Older adults demonstrated longer response times in the object-grasping task compared to younger adults.
  • The older group exhibited poorer manual dexterity.
  • Response times in grasping correlated with manual dexterity and motor imagery skills in older adults.

Conclusions:

  • Aging appears to slow information processing for motor planning rather than impairing the ability to form the plan itself.
  • This motor planning difficulty in older adults is associated with declines in manual dexterity and motor imagery.
  • Findings suggest specific age-related changes in the cognitive aspects of motor control.