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Influence of aging on bimanual coordination control
Chueh-Ho Lin1, Li-Wei Chou2, Shun-Hwa Wei2
1Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, ROC; Department of Physical Therapy, Hung-Kung University, Taichung, Taiwan, ROC.
Experimental Gerontology
|February 20, 2014
Summary
Aging significantly reduces hand grip strength and bimanual coordination. This decline in neuromuscular function impacts elderly adults
Area of Science:
- Neurology
- Gerontology
- Biomechanics
Background:
- Aging leads to neuromuscular degeneration, potentially affecting bimanual coordination crucial for daily activities.
- Limited research exists on how aging impacts grip strength and inter-hand coordination.
Purpose of the Study:
- To investigate the effects of aging on maximal grip force output.
- To assess the influence of aging on bimanual coordination control between two hands.
Main Methods:
- Recruited 10 healthy elderly adults and 21 young adults.
- Participants performed maximal grip force tests.
- Bimanual coordination tasks involved reciprocal grasping, holding, and releasing a dynamometer at 10%, 20%, and 40% maximal voluntary contraction (MVC).
Main Results:
- Elderly adults exhibited significantly lower maximum grip force (77.5% dominant, 71.1% non-dominant hands) compared to younger adults (p<0.05).
- Elderly participants showed significantly longer alternating control times between hands at 20% MVC (p<0.05).
Conclusions:
- Aging diminishes maximal hand grip force and bimanual coordination performance.
- These age-related declines may impair the execution of daily activities requiring bilateral hand use.
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