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To protect the ears during exposure, the individual can use a head cap, ear plugs, or custom-fitted swim molds. [ 33 ] A 2003 study published in Clinical Otolaryngology found that a cotton ball saturated with petroleum jelly was more effective at keeping water out of the ear, was easier to use, and was more comfortable than wax plugs, foam ...
The second earplug is then placed in the other ear and the procedure is repeated a third time. The required increase in loudness this time represents the noise reduction achieved in the second ear. The loudness balance fit-testing approach provides individual personal attenuation ratings for each ear. [24]
Two people wearing behind-the-neck earmuffs. Thermal earmuffs are worn for protection from the cold. Because the ears extend from the sides of the head to gather sound waves, they have a high skin surface-area-to-volume ratio, and very little muscle tissue, causing them to be one of the first body parts to become uncomfortably cold as temperatures drop.
In the absence of strong evidence, general opinion has been against the use of ear protection devices. However, protection such as cotton covered with petroleum jelly, ear plugs, or ear putty is recommended for swimming in dirty water (lakes, rivers, oceans, or non-chlorinated pools) to prevent ear infections.
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