Postural control in elderly subjects participating in balance training.

Area of Science:

• Gerontology
• Biomechanics
• Motor Control

Background:

• Postural control declines with age, increasing fall risk in elderly individuals.
• Balance training is a common intervention to improve stability in older adults.
• Understanding changes in postural sway dynamics is crucial for assessing balance improvements.

Purpose of the Study:

• To evaluate the effects of an 8-week training course on static postural control in elderly individuals.
• To analyze changes in body sway characteristics using posturography and spectral analysis.
• To determine if training improves balance and if observed sway changes reflect impairment or enhancement.

Main Methods:

• Static posturography was performed on a force platform with eyes open and closed in elderly and young groups.
• Elderly participants underwent an 8-week training program, followed by repeated posturographic measurements.
• Spectral analysis (Fast Fourier Transform) was used to analyze sway in anteroposterior (AP) and mediolateral (ML) directions across different frequency bands.

Main Results:

• Elderly individuals exhibited greater body sway and higher frequency power than younger individuals.
• Training significantly improved functional performance but resulted in a longer ML sway path.
• Post-training frequency analysis showed higher ML power in the training group, particularly in lower frequency bands.

Conclusions:

• The training program enhanced balance confidence and mediolateral (ML) balance control in the elderly.
• Increased ML sway path and power post-training suggest improved balance performance, not a decline in postural control.
• Postural sway analysis, including frequency domain, is valuable for interpreting balance changes in older adults.