The Reproducibility of Electromyographic Recordings of the Masseter Muscle in Humans

An investigation was undertaken into the reproducibility of electromyograms of masseter muscles in five human subjects. Under standardized conditions, integrated electromyographic recordings were taken during three sessions on each of 5 days. Analysis of variance showed that at the 0-05 probability level the results were reproducible for each subject not only during the same day but also between days.