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Related Experiment Video

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Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum
07:30

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Published on: March 21, 2019

Effects of aging on force coordination in bimanual task performance.

Stacey L Gorniak1, Jay L Alberts

  • 1Department of Health and Human Performance, University of Houston, Houston, TX 77204, USA. sgorniak@uh.edu

Experimental Brain Research
|July 16, 2013
PubMed
Summary

Aging does not significantly alter within-hand grip-load coordination, but complex actions like object connection decrease force coordination in both young and older adults. Grip force increases with age, raising slip risk.

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Area of Science:

  • Biomechanics
  • Human Factors
  • Gerontology

Background:

  • Manual dexterity and force coordination are crucial for everyday tasks.
  • Aging can affect motor control, potentially impacting grip force and coordination.
  • Understanding age-related changes in bimanual tasks is vital for safety and function.

Purpose of the Study:

  • To investigate age-related differences in grip-load force coordination during bimanual tasks.
  • To examine how task complexity and hand dominance influence force coordination.
  • To assess changes in grip force production and safety margins with aging.

Main Methods:

  • Comparison of grip-load force coordination between young and older adults during bimanual tasks.
  • Inclusion of static and dynamic actions, including object connection with rotational components.
  • Evaluation of grip force, safety margins, and coordination indices.

Main Results:

  • Grip force production increased with age, alongside changes in fingertip properties that heighten slip risk.
  • Within-hand grip-load coordination remained stable with age but was influenced by task goals.
  • Complex actions, especially those involving object connection and rotation, significantly reduced force coordination across all participants, irrespective of age.

Conclusions:

  • Aging does not inherently impair within-hand grip-load coordination, which appears task-specific.
  • Task demands, particularly complex manipulation, pose a greater challenge to bimanual force coordination than age alone.
  • Individual hand roles in bimanual tasks are maintained with age, suggesting preserved task-specific coordination.