Do fallers and nonfallers equally benefit from balance specific exercise program? A pilot study

Area of Science:

• Gerontology
• Biomechanics
• Rehabilitation Science

Background:

• Falls are a significant concern in older adults, impacting mobility and independence.
• Functional balance programs aim to improve stability and reduce fall risk.
• Understanding differences in responsiveness to training between fallers and nonfallers is crucial for personalized interventions.

Purpose of the Study:

• To determine the sample size for broad generalizability of results concerning functional balance training.
• To investigate differences in responsiveness to a multicomponent functional balance program between older adults who fall and those who do not.

Main Methods:

• A multicomponent functional balance program was administered over eight months.
• Participants (n=23) were divided into nonfallers (n=13) and fallers (n=10) groups.
• Key training components included center of gravity (CoG) adjustments, stability limits, head/body rotation, and varied walking conditions.

Main Results:

• No significant difference in postural sway was observed between fallers and nonfallers post-intervention.
• The total center of pressure path length was used for sample size calculation.
• An a priori sample size calculation estimated 110 subjects (20 fallers, 30 nonfallers) for 80% power.

Conclusions:

• The study highlights the need for adequate sample sizes in balance training research.
• Future research should aim for larger cohorts to detect subtle differences in responsiveness to balance interventions.
• The findings inform the design of future clinical trials investigating functional balance programs in older adults.