量化嗓音疲劳恢复：发声负荷练习后的动态嗓音恢复轨迹
Quantifying vocal fatigue recovery: dynamic vocal recovery trajectories after a vocal loading exercise.
作者信息
Hunter Eric J, Titze Ingo R
机构信息
National Center for Voice and Speech, The Denver Center for the Performing Arts, Denver, Colorado, USA.
出版信息
Ann Otol Rhinol Laryngol. 2009 Jun;118(6):449-60. doi: 10.1177/000348940911800608.
OBJECTIVES
We quantified the recovery of voice following a 2-hour vocal loading exercise (oral reading).
METHODS
Eighty-six adult participants tracked their voice recovery using short vocal tasks and perceptual ratings after an initial vocal loading exercise and for the following 2 days.
RESULTS
Short-term recovery was apparent, with 90% recovery within 4 to 6 hours and full recovery at 12 to 18 hours. Recovery was shown to be similar to a dermal wound healing trajectory.
CONCLUSIONS
The new recovery trajectory highlighted by the vocal loading exercise in the current study is called a vocal recovery trajectory. By comparing vocal fatigue to dermal wound healing, this trajectory is parallel to a chronic wound healing trajectory (as opposed to an acute wound healing trajectory). This parallel suggests that vocal fatigue from the daily use of the voice could be treated as a chronic wound, with the healing and repair mechanisms in a state of constant repair. In addition, there is likely a vocal fatigue threshold at which point the level of tissue damage would shift the chronic healing trajectory to an acute healing trajectory.
目的
我们对进行2小时的发声负荷练习（朗读）后的嗓音恢复情况进行了量化。
方法
86名成年参与者在初次发声负荷练习后以及随后的2天内，通过简短的发声任务和感知评分来追踪他们的嗓音恢复情况。
结果
短期恢复明显，4至6小时内恢复90%，12至18小时完全恢复。结果显示，恢复情况类似于皮肤伤口愈合轨迹。
结论
当前研究中发声负荷练习所凸显的新恢复轨迹称为嗓音恢复轨迹。通过将嗓音疲劳与皮肤伤口愈合进行比较，该轨迹与慢性伤口愈合轨迹平行（与急性伤口愈合轨迹相反）。这种平行关系表明，日常嗓音使用导致的嗓音疲劳可被视为慢性伤口，其愈合和修复机制处于持续修复状态。此外，可能存在一个嗓音疲劳阈值，在该阈值时，组织损伤程度会使慢性愈合轨迹转变为急性愈合轨迹。
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