Related Experiment Video
Updated: Jun 12, 2026
09:13
A Vibrotactile Feedback Device for Seated Balance Assessment and Training
Published on: January 20, 2019
Visual feedback of force platform displacements for balance control training: what postural ability do healthy
Patrice R Rougier1, Samir Boudrahem
1Laboratoire de Physiologie de l'Exercice, Université de Savoie, Domaine Scientifique de Savoie-Technolac, Le Bourget du Lac, France.
Motor Control
|May 21, 2010
Summary
Visual feedback (VFB) helps healthy adults reduce body sway. Different VFB timings and types reveal complementary effects, guiding optimal postural control strategies for balance improvement.
Area of Science:
- Biomechanics
- Human motor control
- Neuroscience
Background:
- Previous research indicates visual feedback (VFB) aids postural control in healthy adults.
- VFB can reduce center-of-pressure minus center-of-gravity (CP-CG(v)) movements, suggesting improved balance and muscle relaxation.
Purpose of the Study:
- To investigate the effects of different visual feedback (VFB) conditions on postural control.
- To assess how varying VFB timing and type influence the capacity to reduce body sway and relax lower limb muscles.
Main Methods:
- Fifty-six healthy adults stood on a force platform under four conditions: no VFB (eyes open), real-time CP displacements (VFB(CP0)), delayed CP displacements (VFB(CP600)), and delayed CP-CG(v) displacements (VFB(CP-CG600)).
- Dependency coefficients and postural strategy parameters were measured to quantify balance control and muscle relaxation.
- Linear correlations analyzed the relationship between performance across different VFB conditions.
Main Results:
- All tested VFB conditions demonstrated a beneficial effect on reducing CP-CG(v) movement amplitudes compared to baseline.
- Significant correlations were found between the VFB(CP0) condition and the other VFB conditions, indicating complementary effects.
- The study identified specific postural control behaviors associated with effective utilization of different VFB protocols.
Conclusions:
- Visual feedback protocols, even with delays, can enhance postural control and promote muscle relaxation.
- The effectiveness of VFB is condition-dependent, highlighting the complementary nature of different feedback types and timings.
- Understanding these postural control behaviors is crucial for optimizing VFB interventions for balance training.
Related Concept Videos
00:58Center of Gravity
The center of gravity (COG) of an object is the point where the object's total weight is considered to be concentrated. Knowing the location of the center of gravity is useful when predicting the behavior of a moving object or designing static structures. In a uniform gravitational field, the center of gravity is similar to the center of mass (COM); yet, these two points can be positioned differently. For example, the Moon's center of mass lies very close to its geometric center, but its center...
01:25Internal Forces and Center of Gravity
Internal forces and the center of gravity are fundamental concepts in mechanics, playing a crucial role in understanding the behavior and stability of structures and objects under various conditions. A comprehensive understanding of these principles is essential for engineers, architects, and designers to create safe and efficient systems.
Internal forces are generated within a body due to the interaction between its particles. These forces can be categorized into tension, compression, and...
Internal forces are generated within a body due to the interaction between its particles. These forces can be categorized into tension, compression, and...