# Effects of a Nanotechnology-Based Application on Balance Control in Hearing Aid Users

## TL;DR

A nanotechnology patch added to hearing aids improved balance in older users, suggesting potential for reducing fall risks.

## Contribution

This study introduces a novel application of photobiomodulation in hearing aids to enhance postural control in hearing-impaired older adults.

## Key findings

- Taopatch® reduced sway path length and velocity, indicating better balance.
- Low-frequency sway decreased by 30%, suggesting improved postural efficiency.
- Plantar load redistributed laterally and contact area increased up to 15%.

## Abstract

Background: Balance impairment and falls are a major health concern in older adults. Beyond vestibular and visual factors, growing evidence indicates that age-related hearing loss contributes to postural instability through altered multisensory integration. However, interventions addressing the interaction between auditory input and postural control remain limited. This study examined whether integrating Taopatch® nanotechnology, based on localized photobiomodulation, into conventional hearing aids could influence postural control in individuals with hearing loss. Methods: Forty experienced hearing aid users (mean age 77.3 ± 15.6 years) completed five postural assessments using a SensorMedica® baropodometric platform. Four sessions employed a placebo patch identical in appearance to the active device, and the fifth used Taopatch®. Static and stabilometric parameters were analyzed under open- and closed-eye conditions. Results: Significant improvements were observed with the Taopatch®-integrated device. Sway path length (−8%, p = 0.002), mean velocity (−8%, p = 0.002), and low-frequency sway (−30%, p = 0.04) decreased, indicating smoother and more efficient postural control. A lateral redistribution of plantar load and an increase in contact surface area (up to +15%) were also found. These effects were less evident without visual input. Conclusions: Preliminary findings suggest that localized photobiomodulation integrated into hearing aids may positively influence postural stability in older adults with hearing impairment, possibly by supporting sensory integration processes. Further controlled studies are needed to confirm these effects and clarify the underlying mechanisms.