PURPOSE: to measure the limits of the maximum phonation time pre and post application of the Stemple and Gerdeman Vocal Function Exercises Program in teachers of the Elementary School Education level in Niterói/Brazil, with or without voice alterations. METHOD: there were 17 female teachers who spontaneously agreed to participate. The exercise program that was applied consisted in the sustained vowel /i/, ascending and descending gliding on the word /nol/, and musical scale tones Do Re Mi Fa Sol - issuing the /ol/ for the maximum time of phonation. The measure of the maximum phonation time was counted pre and post exercise program through the vowel /ε/. RESULTS: the results revealed that the teachers presented an expressive increase in the maximum phonation and time duration of the post-exercise program. CONCLUSION: the Stemple and Gerdeman Vocal Function Exercise Program applied to teachers enhanced their professional performance increasing the maximum phonation time intrasubjects.