Samelli Alessandra Giannella, Maia Rabelo Camila, Alves Martins Daiane, Akina Shinya Indra, Martins Guesser Vitor, Rocha Clayton Henrique
Department of Physiotherapy, Speech-Language and Hearing Sciences and Occupation Therapy, School of Medicine, University of São Paulo, São Paulo, Brazil.
Department of Physiotherapy, Speech-Language and Hearing Sciences and Occupation Therapy, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Med Lav. 2025 Jun 17;116(3):16606. doi: 10.23749/mdl.v116i3.16606.
Measuring the effectiveness of training in properly fitting hearing protection devices (HPDs) is crucial, as it directly influences their attenuation. We assessed an earplug's personal attenuation ratings (PAR) following various intervention modalities.
The sample consisted of 52 adults without experience using hearing protection devices (HPD). The Personal Attenuation Rating (PAR) was evaluated through real-ear attenuation at threshold (REAT) and microphone-in real-ear (MIRE) measurements after participants fitted the HPD as they saw fit. Participants were then randomly assigned to groups and given instructions on HPD fitting as follows: (G1) individual in-person demonstration; (G2) package reading; (G3) video; (G4) no intervention. PAR was subsequently reassessed. Data analysis was conducted using ANOVA and the Fisher Exact test.
Pre-intervention assessments showed no significant differences between the groups using either method. After training, G1, G2, and G3 significantly increased the PAR compared to G4, through both processes. The comparison of PAR post and pre-intervention revealed significant differences for G1, G2, and G3 (REAT) as well as for G1 and G3 (MIRE), in contrast to G4. Regarding "pass" and "fail" outcomes through MIRE, G1, G2, and G3 had more "pass" results after the intervention, compared to G4.
Intervention, regardless of modality, effectively improved correct earplug HPD fitting, evidenced by increased PAR and higher rates of individuals achieving sufficient attenuation. Individual in-person demonstrations and video instructions proved to be the most effective training modalities.
测量正确佩戴听力保护装置（HPD）培训的有效性至关重要，因为它直接影响其衰减效果。我们评估了在各种干预方式后耳塞的个人衰减评级（PAR）。
样本包括52名无使用听力保护装置（HPD）经验的成年人。在参与者自行佩戴HPD后，通过阈值处的真耳衰减（REAT）和真耳内麦克风（MIRE）测量来评估个人衰减评级（PAR）。然后将参与者随机分组，并给予如下关于HPD佩戴的指导：（G1）个人现场演示；（G2）阅读包装说明；（G3）观看视频；（G4）无干预。随后重新评估PAR。使用方差分析和Fisher精确检验进行数据分析。
干预前评估显示，使用两种方法时各组之间无显著差异。训练后，通过两种测量方法，与G4组相比，G1、G2和G3组的PAR均显著增加。与G4组相比，干预后和干预前PAR的比较显示，G1、G2和G3组（REAT）以及G1和G3组（MIRE）存在显著差异。关于通过MIRE测量的“通过”和“未通过”结果，与G4组相比，G1、G2和G3组在干预后有更多的“通过”结果。
无论采用何种方式，干预均有效改善了耳塞HPD的正确佩戴，PAR增加以及达到足够衰减的个体比例更高证明了这一点。个人现场演示和视频指导被证明是最有效的培训方式。
