Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Campus Großhadern, Marchioninistraße 15, 81377, Munich, Germany.
Freiburg Institute of Musicians' Medicine, Freiburg University, Freiburg, Germany.
Eur Arch Otorhinolaryngol. 2020 Jun;277(6):1699-1705. doi: 10.1007/s00405-020-05791-5. Epub 2020 Feb 27.
Vocal loading capacity is an important aspect of vocal health and is measured using standardized vocal loading tests. However, it remains unclear how vocal fold oscillation patterns are influenced by a standardized vocal loading task.
21 (10 male, 11 female) vocally healthy subjects were analyzed concerning the dysphonia severity index (DSI) and high speed videolaryngoscopy (HSV) on the vowel /i/ at a comfortable pitch and loudness before and after a standardized vocal loading test (10 min standardized text reading, at a level higher than 80 dB (A) measured at 30 cm from the mouth).
Changes in DSI were statistically significant, diminishing by 1.2 points after the vocal loading test, which was mainly caused by an increase of the minimum intensity. However, the pre-post comparison of HSV derived measures failed to show any statistically significant changes.
It seems necessary to analyze the effects of a standardized vocal loading test on vocal fold oscillation patterns with respect to softest phonation and phonation threshold pressure rather than comfortable pitch and loudness. Level of evidence 2c.
发声载力是嗓音健康的一个重要方面，可用标准化发声载力测试进行测量。然而，目前仍不清楚标准化发声载力任务如何影响声带的振动模式。
21 名（10 名男性，11 名女性）嗓音健康的受试者在舒适音高和响度下进行 /i/ 元音的浊音严重度指数（DSI）和高速频闪喉镜（HSV）分析，然后在进行标准化发声载力测试（10 分钟标准文本阅读，在距离口 30 厘米处测量声级高于 80 dB（A））前后进行。
DSI 的变化具有统计学意义，发声载力测试后下降了 1.2 分，这主要是由于最小强度增加所致。然而，HSV 衍生测量值的前后比较未显示出任何统计学上的显著变化。
似乎有必要分析标准化发声载力测试对声带振动模式的影响，而不是针对舒适音高和响度，而是针对最轻柔发声和发声阈压。证据水平 2c。
