The following are the factors are associated to vocal risk, according to the literature: teaching-related conditions, workplace factors noise, temperature, classroom size, acoustic conditions, and chemicals, and intrinsic factors embodied as individual characteristics disease, muscle tone, posture, stress, emotions, habits.
Los estudios revisados precisan como factores de riesgo vocal: las condiciones propias del ejercicio docente, factores relacionados con el entorno laboral ruido, temperatura, tamaño del aula, acústica, químicos y factores intrínsecos enfermedades, hipertensión muscular, postura, estrés, emociones, hábitos, que se definen como aquellas características individuales.