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Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
Effects of excessive body weight on postural control
Janusz W Błaszczyk1, Joanna Cieślinska-Swider, Michal Plewa
1Jerzy Kukuczka Academy of Physical Education, Faculty of Physiotherapy, Katowice, Poland. j.blaszczyk@nencki.gov.pl
Journal of Biomechanics
|April 24, 2009
Summary
Obesity significantly impacts postural control, leading to reduced body sway in individuals with increased body weight. However, severe obesity (BMI > 40) diminishes dynamic stability, indicating functional adaptations to maintain balance.
Area of Science:
- Biomechanics
- Human Physiology
- Kinesiology
Background:
- Excessive body weight, particularly obesity, presents unique biomechanical challenges.
- Understanding the effects of obesity on postural control is crucial for health and fall prevention.
Purpose of the Study:
- To investigate the impact of increased body weight on both static and dynamic aspects of postural control.
- To analyze how obesity influences the spontaneous center of foot pressure (CP) motion and voluntary postural adjustments.
Main Methods:
- Evaluated static and dynamic stability in 100 obese and 33 lean women.
- Measured postural sway during quiet stance with eyes open and closed using a force plate.
- Assessed the range of voluntary forward center of pressure (CP) displacements.
Main Results:
- Increased body weight was associated with a significant reduction in postural sway.
- Postural sway parameters negatively correlated with body mass and body mass index (BMI).
- Dynamic stability range decreased significantly in individuals with BMI > 40.
Conclusions:
- Increased body weight induces functional adaptations in postural control mechanisms.
- While mild to moderate obesity may reduce sway, severe obesity compromises dynamic stability, increasing fall risk.
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