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Single-Leg Balance and Lower Limb Strength: Quantitative Analysis with the Balance Master System
José Manuel Delfa-de-la-Morena1,2, Pedro Pinheiro Paes3,4, Débora Priscila Lima de Oliveira3
1Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
Journal of Functional Morphology and Kinesiology
|December 27, 2024
Summary
Lower limb strength is crucial for maintaining balance during single-leg stance, particularly when vision is available. Strengthening leg muscles can enhance postural stability and overall physical function in adults.
Area of Science:
- Biomechanics
- Human Movement Science
- Physiology
Background:
- Postural stability is vital for daily activities and injury prevention.
- The interplay between lower limb strength and balance control requires further investigation.
- Understanding these relationships can inform targeted interventions for diverse populations.
Purpose of the Study:
- To examine the association between lower limb muscular strength and postural control during a single-leg stance.
- To compare postural stability and lower limb strength across different physical activity levels and body mass categories.
- To identify factors influencing balance performance in a single-leg stance.
Main Methods:
- 64 participants were categorized into sedentary vs. physically active groups (METs) and normal weight vs. overweight vs. obese.
- Lower limb strength was assessed, and postural stability was evaluated using the Balance Master system's Sensory Organization Test.
- Data analysis focused on comparing strength and stability metrics across groups and correlating them.
Main Results:
- No significant differences in mean or maximum lower limb strength were found between groups.
- Postural stability, with eyes open or closed, did not significantly differ across participant groups.
- A significant positive correlation was identified between lower limb strength and single-leg stance stability with eyes open.
Conclusions:
- Lower limb muscle strength plays a key role in maintaining postural stability, especially when visual input is utilized.
- While overall strength may not differ significantly across activity or weight groups, its contribution to balance is evident.
- Interventions aimed at enhancing lower limb strength are recommended for improving balance and physical functionality in adults.
