Fernando Pessoa University, Porto, Portugal; Transdisciplinary Center of Consciousness Studies of Fernando Pessoa University, Porto, Portugal and FP-B2S - Behaviour and Social Sciences Research Center of Fernando Pessoa University, Porto, Portugal.
Fernando Pessoa University, Porto, Portugal; Transdisciplinary Center of Consciousness Studies of Fernando Pessoa University, Porto, Portugal and FP-B2S - Behaviour and Social Sciences Research Center of Fernando Pessoa University, Porto, Portugal; Longevity and Development Observatory of Fernando Pessoa University, Porto, Portugal; UFP's University Hospital, Porto, Portugal.
J Voice. 2021 Nov;35(6):933.e23-933.e31. doi: 10.1016/j.jvoice.2020.02.011. Epub 2020 Mar 14.
The interaction between muscle tension, posture, and vocal use is very complex as clinical research suggests that abnormal laryngeal posture can be associated with muscle adaptive changes, although specific evidence concerning body posture and voice disorders has been lacking. Thus, the aim of this study was to verify if there were differences in posture, muscle tension and voice between teachers with and without voice complaints.
Cross-sectional study.
Twenty-four teachers, 6 males and 18 females, were submitted to photogrammetry, muscle tension assessed trough palpation and algometry assessment. Aerodynamic assessment of voice, acoustic and auditory-perceptual analysis of voice were done. Participants were divided into without voice complaints group (WVCG; n = 11) and voice complaints group (VCG; n = 13) based on Sociodemographic and Clinical Questionnaire completion.
For auditory-perceptual analysis, VCG showed a significant higher values on GRBASH subscales Grade (p < 0.001) and Roughness (p = 0.011). The VCG showed statistically significant higher values on muscle tension of suprahyoids (p = 0.001), thyrohyoids (P = 0009) and cricothyroids muscles (p = 0.040) and statistically significant lower values on algometry of the cricothyroid (p = 0.023 left and p = 0.026 right), suprahyoids (p = 0.017 left & p = 0.018 right), thyrohyoids (p = 0.006 left and p = 0.007 right) and pharyngolaryngeal (p = 0.016 left and p = 0.021 right) muscles of both sides. Concerning the aerodynamic assessment of voice and acoustic analysis of voice, no statistically significant differences between the groups were found.
Findings indicated statistically significant differences in muscle tension in laryngeal intrinsic muscles and auditory-perceptual analysis between teachers with and without voice complaints.
肌肉张力、姿势和发声之间的相互作用非常复杂，临床研究表明，异常的喉位可能与肌肉适应性变化有关，尽管关于身体姿势和发声障碍的具体证据尚缺乏。因此，本研究旨在验证是否存在发声抱怨的教师和无发声抱怨的教师之间的姿势、肌肉紧张和声音差异。
横断面研究。
24 名教师，6 名男性和 18 名女性，接受了摄影测量，肌肉张力通过触诊和肌动描记法评估。进行了语音的空气动力学评估、语音的声学和听觉感知分析。根据社会人口学和临床问卷的完成情况，参与者被分为无发声抱怨组（WVCG；n=11）和发声抱怨组（VCG；n=13）。
对于听觉感知分析，VCG 在 GRBASH 子量表等级（p<0.001）和粗糙度（p=0.011）上表现出显著更高的值。VCG 在舌骨上肌（p=0.001）、甲状舌骨肌（P=0.0009）和环甲肌（p=0.040）的肌肉张力上表现出统计学上显著更高的值，在环甲肌的肌动描记法（p=0.023 左和 p=0.026 右）、舌骨上肌（p=0.017 左和 p=0.018 右）、甲状舌骨肌（p=0.006 左和 p=0.007 右）和咽喉肌（p=0.016 左和 p=0.021 右）上表现出统计学上显著更低的值。在语音的空气动力学评估和声学分析方面，两组之间没有发现统计学上的显著差异。
研究结果表明，有和无发声抱怨的教师之间的喉内肌肌肉张力和听觉感知分析存在统计学上的显著差异。
