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Athletic skill level is reflected in body sway: a test case for accelometry in combination with stochastic dynamics
Claudine J C Lamoth1, Rob C van Lummel, Peter J Beek
1Research Institute MOVE, Faculty of Human Movement Sciences, VU University Amsterdam, The Netherlands. C.J.C.Lamoth@med.umcg.nl
Gait & Posture
|January 14, 2009
Summary
Body sway variability measured by accelerometry can differentiate athletic skill levels. Advanced gymnasts exhibit less variable, more regular, and stable postural control, suggesting accelerometry as a diagnostic tool.
Area of Science:
- Biomechanics
- Human Movement Science
- Sports Science
Background:
- Postural control variability offers insights into age, pathology, and skill-related changes.
- Ambulant accelerometry presents a potential method for assessing postural sway.
Purpose of the Study:
- To investigate if trunk-based accelerometry can distinguish between young adults with varying athletic skills.
- To explore the application of accelerometry in characterizing postural control differences.
Main Methods:
- Three groups of young adults (bachelor students, physical education students, gymnastics specialists) were assessed.
- Data collected during tandem stance (eyes open/closed, firm/foam surface) using a three-axial accelerometer.
- Analysis of acceleration time-series for variability, spectral properties, and stochastic dynamics (regularity, local stability).
Main Results:
- Eyes closed and foam surface conditions increased body sway variability.
- Eyes closed led to less regular sway but greater local stability; foam surface had opposite effects.
- Higher gymnastic skill correlated with reduced sway variability, decreased regularity, and increased stability.
Conclusions:
- Quantifying stochastic-dynamical properties of postural sway via accelerometry can differentiate skill levels.
- Ambulant accelerometry shows promise as a diagnostic tool for assessing postural control.
- Objective measures of postural sway dynamics can reveal skill-based adaptations in motor control.
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