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Updated: Aug 14, 2025
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Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
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Lifespan changes in postural control
Nathan Van Humbeeck1, Reinhold Kliegl2, Ralf T Krampe3
1Brain and Cognition Group, University of Leuven (KU Leuven), Leuven, Belgium. nathan.vanhumbeeck@kuleuven.be.
Scientific Reports
|January 11, 2023
Summary
Postural control declines with age, showing an inverted U-shape. Older adults exhibit distinct short-term control deficits but compensate with long-term adjustments, unlike children.
Area of Science:
- Human movement science
- Gerontology
- Developmental psychology
Background:
- Postural control exhibits an inverted U-shaped lifespan trajectory, with peak performance in young adulthood.
- Children and older adults show similar underperformance, but the underlying control mechanisms may differ.
- Understanding age-related changes in postural control is crucial for fall prevention and maintaining independence.
Purpose of the Study:
- To investigate age-related differences in postural control mechanisms across the lifespan.
- To compare postural control strategies between children and older adults under varying sensory and stability demands.
- To re-evaluate existing postural control frameworks based on novel findings from stabilogram diffusion analysis.
Main Methods:
- Collected center-of-pressure (CoP) trajectory data from 299 participants aged 7–81 years.
- Assessed postural control in three tasks: stable stance, compromised vision, and narrowed base of support.
- Utilized stabilogram diffusion analysis (SDA) to quantify short-term (drift) and long-term (diffusion) postural control dynamics.
Main Results:
- Summary statistics confirmed the inverted U-shape, with older adults more affected by visual and base-of-support challenges than children.
- SDA revealed greater short-term postural sway (drift) in older adults, particularly under challenging conditions.
- Older adults demonstrated compensatory long-term diffusion and earlier anti-persistent behavior in tandem stance compared to children.
Conclusions:
- Age-related postural control deficits are not uniform, with older adults employing distinct compensatory strategies.
- The postural control system demonstrates significant adaptability throughout the lifespan.
- Findings necessitate a reinterpretation of current postural control models to account for age-specific adaptations.
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