The Effect of EMST and Triflo Devices on Acoustic and Aerodynamic Parameters of Sound and Sound Fatigue in Academics: A Randomized Controlled Study
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Measurement of vocal fatigue
研究概览
简要总结
A healthy voice is essential for meeting professional and communicative demands, particularly for professional voice users such as academics, who are at increased risk of voice disorders due to prolonged and intensive voice use, unfavorable acoustic conditions, and stress. Voice disorders often result from inadequate respiratory support, leading to compensatory laryngeal overuse, vocal fatigue, and deterioration in voice quality. Although traditional voice therapy emphasizes diaphragmatic breathing, it does not enhance respiratory capacity because it lacks resistance. This study aims to investigate the effects of resistance-based breathing exercises using the Expiratory Muscle Strength Trainer (EMST 150) and triflo devices on respiratory capacity, acoustic and aerodynamic voice parameters, and vocal fatigue in academics. The findings are expected to contribute to the literature and support the use of EMST as a preventive and therapeutic approach for occupational groups at risk of voice disorders.
详细描述
A healthy voice should provide information about a person's age, gender, and emotional state, while also meeting their professional, social, and communicative needs. A voice disorder is generally a change in voice quality, pitch, and/or loudness that differs from what is expected for someone of the same age or gender. In the presence of a voice disorder, the voice does not represent the speaker and cannot meet their professional, social, and communicative needs. There are many risk factors that cause voice disorders. One of these is occupation.
Speaking excessively long and loudly or at a high pitch due to one's profession is defined as voice misuse and can cause voice disorders. For example, members of professions that require intensive and prolonged use of their voices (teachers, imams, academics, telephone operators, lawyers, theater actors) are more likely to experience voice disorders. Individuals who use their voices as a primary means of communication while performing their professions are defined as professional voice users.
Although professional voice users from different occupational groups may seem to fall under the same heading, they differ in various aspects such as the frequency and method of voice use. This differentiation was classified into four levels of voice by Koufman and Isaacson (1991), and academics were included in the category of professional voice users. Voice disorders are seen in 10% of the general population and 50% of professional voice users. Despite this, there is an insufficient number of studies examining the prevalence of voice disorders in academics, risk factors, and research aimed at evaluating, diagnosing, and preventing observed voice disorders.
Professional voice users have to use their voices more effectively and intensely due to their intensive voice use, and this leads to a need for a stronger and healthier voice compared to other individuals. Risk factors that cause voice disorders in teachers, such as speaking loudly for long periods, noisy and acoustically poor working environments, dry and dusty air, and stress, also apply to academics.
In professions with high voice demands, such as teaching and academia, in addition to reducing or eliminating voice-related problems, preventive intervention programs should be implemented, and the voice should be strengthened to make it resistant to long-term and intensive use. Voice enhancement and long-term use are highly related to respiration, a component of the voice production mechanism.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 25 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Having taught for at least 2 academic semesters as an academic. Having taught at least 9 hours of face-to-face classes per week. Not having been diagnosed with an organic voice disorder. Not smoking. Not being in a menstrual cycle during the pre-, mid- and post-tests.
排除标准
- •Being Pregnancy, hypertension disease have a history of stroke, heart anomaly disease chronic asthma disease emphysema or obstructive pulmonary disease, have a any surgery in the skull base and neck region, have a any neurogenic or psychological diagnosis or condition.
研究组 & 干预措施
third experimental groups
EMST and Triflo applications will be carried out.
干预措施: Triflo (Device)
third experimental groups
EMST and Triflo applications will be carried out.
干预措施: EMST (Device)
control groups
first experimental group
triflo will be applied
干预措施: Triflo (Device)
second experimental groups
EMST application will be performed.
干预措施: EMST (Device)
结局指标
主要结局
Measurement of vocal fatigue
时间窗: The study will continue for 4 months from the start of the study.
To assess vocal fatigue, participants will complete a vocal fatigue scale before starting the exercises. Participants will fill out this scale themselves. They will rate the parameters related to vocal fatigue on a scale of 0 to 4. Higher scores indicate greater fatigue. The validity and reliability of the vocal fatigue scale have been established in Turkish. Participants will be asked to complete this scale again in the 3rd week of the exercises and again in the 5th week, which is the final week of the exercises. They will also be asked to complete it again 2 months after the completion of the exercises for follow-up.
measurement of acoustic parameters of voice
时间窗: The study will continue for 4 months from the start of the study.
In acoustic measurement, participants will have their measurements taken before starting the exercises.For acoustic parameters of the voice, jitter, shimmer, noise-harmonic ratio, and harmonic-noise ratio parameters will be measured by recording via the Multi-Dimensional Voice Program (MDVP). Furthermore, for acoustic parameters of the voice, the extra smooth cepstral peak prominence value and the Acoustic Voice Quality Index (AVQI) score will be calculated using Praat. These measurements will be repeated 3 weeks after the start of exercises, 5 weeks after the completion of exercises, and 2 months after the completion of exercises during follow-up.
Aerodynamic measurement of the voice,
时间窗: The study will continue for 4 months from the start of the study.
For the aerodynamic measurement of voice, participants will be asked to produce the sounds /s/ (measuring lung capacity), /z/ (vocal cord closure time), and /a/ (average sound production time), and the duration will be recorded. An s/z ratio close to 1 or between 1 and 1.3 is considered normal. For /a/ phonation, a normal adult is expected to produce sounds of 27-28 seconds. Participants' values will be recorded before the exercise, at the 3rd week of exercise, at the 5th week after the exercise, and again at 2 months post-exercise for follow-up.
次要结局
未报告次要终点
研究者
Eda Uzuner
lecturer
Medipol University