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Does Combat Hearing Preservation Equipment Affect Balance?

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This summary is machine-generated.

The 3M Combat Arms Ear Plugs (CAEP) and Nacre QuietPro systems do not negatively impact balance. This study found no significant balance decrements when using these hearing protection devices compared to no protection.

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Area of Science:

  • Auditory science
  • Vestibular science
  • Human factors engineering

Background:

  • Hearing protection devices are crucial for military personnel operating in high-noise environments.
  • Understanding the potential impact of hearing protection on balance is vital for operational safety and effectiveness.
  • The 3M Combat Arms Ear Plugs (CAEP) and Nacre QuietPro are widely used hearing preservation systems.

Purpose of the Study:

  • To determine if the 3M Combat Arms Ear Plugs (CAEP) affect balance due to occlusion and attenuation.
  • To assess if the Nacre QuietPro system's occlusion effect and noise-canceling features impact balance.
  • To compare the balance effects of CAEP and Nacre QuietPro against a no-hearing-protection control condition.

Main Methods:

  • A prospective pilot study involving 20 healthy subjects with normal hearing and no vestibular dysfunction.
  • Balance was assessed using a static posturography forceplate measuring center of gravity angular acceleration.
  • Subjects were tested under three randomized conditions: no hearing protection, CAEP, and Nacre QuietPro, while wearing blackened goggles.

Main Results:

  • Mean angular acceleration (degrees/second) for the control group was 0.65 ± 0.19.
  • Mean angular acceleration for the CAEP group was 0.69 ± 0.23.
  • Mean angular acceleration for the Nacre QuietPro group was 0.70 ± 0.20, with no statistically significant differences between conditions (ANOVA, p = 0.706).

Conclusions:

  • The use of 3M Combat Arms Ear Plugs (CAEP) does not result in a decrement in balance.
  • The Nacre QuietPro system does not adversely affect balance.
  • These combat hearing preservation devices can be utilized without compromising the integrity of the balance system.