Marta Oliveira, Klara Slezakova, Cristina Delerue-Matos, Maria do Carmo Pereira, Simone Morais
Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring-summer season: pollutants and comfort parameters
Journal of toxicology and environmental health. Part A
investigate selfreported effects mask usage vocal fatigue number vocal complaints high school college educators forty teachers high schools universities reported using masks teach person spring 2020 fall 2020 semesters completed anonymous survey regarding selfreport teaching history vocal use vocal complaints vocal health responses analyzed using descriptive statistics tests survey participants reported increase forms vocal complaints investigated despite increase amplification use participants also reported decrease daily water consumption eight 16 ounces water wearing mask classroom compared teaching prior coronavirus disease 2019 participants also reported significant increase vocal effort teaching mask p 0001 educators reported significant effect increased vocal complaints decreased water intake wearing masks decrease water consumption increase vocal effort may lead frequent vocal complaints teachers high school college level