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Age-related deterioration of coordinated interlimb behavior.
D J Serrien1, S P Swinnen, G E Stelmach
1Department of Kinesiology, KU Leuven, Belgium. debbie.serrien@insel.ch
Summary
Aging affects movement coordination, particularly with dissimilar limbs in anti-phase patterns. Similar limb movements remain stable, suggesting age-related coordination decline is task-dependent.
Area of Science:
- Neuroscience
- Motor Control
- Human Aging Research
Background:
- Human motor control involves coordinating multiple limbs.
- Aging can impact motor performance and coordination.
- Understanding age-related changes in limb coordination is crucial.
Purpose of the Study:
- To investigate age-related differences in two-limb coordination.
- To compare coordination stability between homologous and nonhomologous limb movements.
- To examine the influence of in-phase and anti-phase modes on age-related coordination changes.
Main Methods:
- Participants (younger and older) performed homologous and nonhomologous limb coordination tasks.
- Tasks involved 1:1 synchronization in in-phase and anti-phase modes.
- Coordination patterns and their stability were analyzed.
Main Results:
- Aging modulated coordination dynamics based on effector characteristics.
- Homologous limb coordination was resistant to age-related deficits.
- Nonhomologous limb coordination showed degradation, especially in the anti-phase mode.
Conclusions:
- Age-related declines in cognitive regulation and afferent processing contribute to coordination deficits.
- Deterioration in coordinated behavior across the lifespan is task-dependent.
- Task dependency arises from combined cognitive and sensory components.