PURPOSE This study aimed to verify the immediate effect of low-frequency transcutaneous electrical nerve stimulation (TENS) and laryngeal manual therapy (LMT) in musculoskeletal pain, voice quality, and self-reported signs in women with dysphonia. METHOD Thirty women with behavioral dysphonia were randomly divided into the TENS group and the LMT group. All participants fulfilled the pain survey and had their voices recorded to posterior perceptual and acoustic analysis before and after intervention. The TENS group received a unique low-frequency TENS session (20 minutes). The LMT group received LMT (20 minutes) with soft and superficial massage in the sternocleidomastoid muscle, suprahyoid muscles, and larynx. Afterward, the volunteers reported their voice, larynx, breathing, and articulatory signs. Pre and post data were compared by parametric and nonparametric tests. RESULTS After TENS, a decrease in pain intensity in the posterior or anterior region of the neck, shoulders, upper or lower back, and masseter was observed. After LMT, a decrease in pain intensity in the neck anterior region, shoulders, lower back, and temporal region was observed. Also, after TENS, there was an improvement in vowel /a/ instability; after LMT, there was a general improvement in voice quality, decrease in tension, and decrease in breathiness in speech. Positive voice and laryngeal signs were reported after TENS, and positive laryngeal signs and articulation were reported after LMT. CONCLUSION TENS and LMT may be used in voice treatment of women with behavioral dysphonia, and both may be considered important therapy resources that reduce musculoskeletal pain and cause positive laryngeal signs. Both TENS and LMT are able to partially improve voice quality, but TENS presented better results.

中文翻译：

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经皮神经电刺激（TENS）和喉头手​​法治疗（LMT）：对发声障碍妇女的即时疗效。

目的本研究旨在验证低频经皮电神经刺激（TENS）和喉部手法治疗（LMT）对患有发音困难的女性的肌肉骨骼疼痛，声音质量和自我报告的体征的即时效果。方法将30例行为困难的女性随机分为TENS组和LMT组。所有参与者均完成了疼痛调查，并在干预前后将其声音记录到后感官和听觉分析中。TENS组收到了一个独特的低频TENS会话（20分钟）。LMT组接受了LMT（20分钟），对胸锁乳突肌，胸上肌和喉部进行了浅浅的按摩。之后，志愿者报告了他们的声音，喉部，呼吸和关节发音。通过参数和非参数测试比较了前后数据。结果TENS后，观察到颈部，肩膀，上或下背部和咬肌的后部或前部疼痛强度降低。LMT后，观察到颈部前部区域，肩膀，下背部和颞部区域的疼痛强度降低。同样，在TENS之后，元音/ a /不稳定性得到了改善；LMT后，语音质量总体改善，紧张程度降低，语音呼吸减少。TENS后报告声音和喉头征阳性，LMT后报告喉头征兆和关节清晰。结论TENS和LMT可以用于行为障碍的女性的语音治疗，两者均被视为重要的治疗资源，可减轻肌肉骨骼疼痛并引起阳性喉头体征。TENS和LMT都能部分改善语音质量，但TENS表现出更好的效果。