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Updated: Aug 18, 2026

Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task
Published on: June 1, 2015
Developmental origins of motor coordination: leg movements in human infants
Insights
Infant leg movement coordination develops from global, inflexible patterns to complex, adaptable movements. Dynamic motor theory suggests body growth significantly influences this motor development alongside neurological changes.
Area of Science:
- Developmental neuroscience
- Motor control
- Human infant development
Background:
- Infant leg movements exhibit initial topographical and temporal organization.
- Early movements are characterized by global and inflexible synergies.
Purpose of the Study:
- To discuss infant leg movement coordination using dynamic motor theory.
- To explore the interplay between neurological maturation and biodynamic changes in motor development.
Main Methods:
- Analysis of dynamic motor theory principles.
- Observation of infant leg movement patterns from newborn to one year.
Main Results:
- Leg movements transition from global synergies to disassociated and reintegrated coalitions.
- Growth-related biodynamic changes appear crucial for movement outcomes.
Conclusions:
- Infant motor development involves complex interactions between neural and physical factors.
- Biodynamic properties of body segments significantly impact movement patterns and developmental trajectories.
Abstract:
The development of coordination of leg movements of human infants is discussed from the perspective of dynamic motor theory. Even in the newborn period, leg movements have topographical and temporal organization, but it is global and inflexible. During the first year, limb segments become both disassociated from these global synergies and reintegrated into more complex coalitions. Growth-related changes in the biodynamic properties of the body segments may be as important as neurological maturation in determining the movement outcomes and may help explain the spurts, regressions, and asymmetries seen in early infancy.
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