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Updated: Feb 9, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
Published on: August 30, 2016
Postural control during reaching while sitting and general motor behaviour when learning to walk
Anke G Boxum1, Sacha La Bastide-Van Gemert2, Linze-Jaap Dijkstra1
1University of Groningen, University Medical Center Groningen, Department of Paediatrics - Developmental Neurology, Groningen, the Netherlands.
Infants learning to walk exhibit individual postural strategies rather than consistent reorganization. General motor behavior shows reorganization during this transition, indicating unique developmental pathways.
Area of Science:
- Developmental neuroscience
- Motor control
- Infant motor development
Background:
- Understanding postural control and motor behavior changes during early development is crucial.
- The transition to independent walking is a significant motor milestone involving complex neuromuscular adaptations.
Purpose of the Study:
- To investigate changes in muscular postural strategies and general motor behavior in infants during the acquisition of independent walking.
- To assess postural control at the levels of direction specificity and fine-tuning.
Main Methods:
- A longitudinal study recorded surface electromyograms of arm, trunk, and neck muscles in 28 infants.
- Infants were assessed during three developmental phases: pull-to-stand (T0), first steps (T1), and one month post-T1 (T2).
- Motor behavior was evaluated using the Infant Motor Profile (IMP), with data analyzed using linear mixed-effects models.
Main Results:
- No significant changes in overall postural parameters were observed over time.
- Individual infants displayed unique postural reorganizational changes.
- The total Infant Motor Profile (IMP) score decreased significantly from T0 to T1, but not from T1 to T2.
Conclusions:
- Typically developing infants demonstrate individual muscular strategies for postural control during the transition to walking, not consistent reorganization patterns.
- Evidence of general motor behavior reorganization is present during this developmental period.
- Infant motor development is characterized by individual trajectories in postural control and overall motor skills.
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