Solomon Nancy Pearl, Helou Leah B, Dietrich-Burns Katie, Stojadinovic Alexander
Department of Surgery, Walter Reed Army Medical Center, Washington, DC 20307, USA.
Semin Speech Lang. 2011 Feb;32(1):31-42. doi: 10.1055/s-0031-1271973. Epub 2011 Apr 13.
Obesity may be associated with increased tissue bulk in the laryngeal airway, neck, and chest wall, and as such may affect vocal function. Eight obese and eight nonobese adults participated in this study; the obese participants underwent bariatric surgical procedures. This mixed-design study included cross-sectional analysis for group differences and longitudinal analysis for multidimensional changes in vocal function from four assessments collected over 6 months. No significant differences were detected between groups from the preoperative assessment. Further, no changes were detected over time for acoustic parameters, maximum phonation time, laryngeal airway resistance, and airflow during a sustained vowel for either group. Only minor differences were detected for strain, pitch, and loudness perceptions of voice over time, but not between groups. Phonation threshold pressure (PTP), at comfortable and high pitches (30% and 80% of the F0 range) changed significantly over time, but not between groups. Examination of individual data revealed a trend for PTP at 30% F0 to decrease as body mass index decreased. PTP may be informative for assessing vocal function in clients who present with obesity and voice symptoms.
肥胖可能与喉气道、颈部和胸壁的组织体积增加有关，因此可能会影响发声功能。八名肥胖成年人和八名非肥胖成年人参与了这项研究；肥胖参与者接受了减肥手术。这项混合设计研究包括对组间差异的横断面分析以及对在6个月内收集的四次评估中发声功能的多维变化的纵向分析。术前评估未发现两组之间存在显著差异。此外，两组的声学参数、最大发声时间、喉气道阻力和持续元音期间的气流随时间均未发现变化。随着时间的推移，仅在声音的紧张度、音高和响度感知方面检测到微小差异，但两组之间没有差异。舒适音高和高音高（F0范围的30%和80%）时的发声阈压力（PTP）随时间有显著变化，但两组之间没有差异。对个体数据的检查显示，随着体重指数的降低，F0为30%时的PTP有下降趋势。PTP可能有助于评估有肥胖和声音症状的患者的发声功能。
