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Light touch and medio-lateral postural stability during short distance gait
E Kodesh1, F Falash1, E Sprecher1
1Department of Physical Therapy, Faculty of Social Welfare and Health Sciences, University of Haifa, Mount Carmel, Haifa, Israel.
Neuroscience Letters
|December 3, 2014
Summary
Light fingertip touch improves balance during walking when touching a stable object. However, touching a moving object like a stick does not enhance stability, suggesting sensory cues are crucial for balance control.
Area of Science:
- Human movement science
- Neuroscience
- Biomechanics
Background:
- Light fingertip touch on stable objects enhances postural control during standing.
- The impact of light touch on balance during gait remains less understood.
- Postural stability is critical for safe and efficient locomotion.
Purpose of the Study:
- To investigate the effects of light fingertip touch on postural stability during gait.
- To determine if touching a static versus a dynamic object differentially affects gait balance.
- To test the hypothesis that light touch increases postural stability during walking.
Main Methods:
- Forty healthy young adults participated in the study.
- Gait was assessed under four conditions: eyes open, eyes closed, eyes closed with light touch on a static object, and eyes closed with light touch on a dynamic object (moving stick).
- Medio-lateral step width variability was the primary measure of gait balance.
Main Results:
- Light touch on a static object significantly reduced medio-lateral step width variability, indicating improved balance.
- This stabilizing effect was not observed when lightly touching a dynamic, moving object.
- The difference in effect is attributed to the availability of reliable sensory cues from static versus dynamic touch.
Conclusions:
- Light fingertip touch can enhance gait stability, but only when interacting with a stable external reference.
- The sensory information derived from touching a static object aids in maintaining postural control during gait.
- Gait balance is modulated by the type of tactile sensory feedback available, with static touch being more beneficial than dynamic touch.
