Measurement of mandibular activity during mastication using a three-axis accelerometer in patients with dysphagia after a stroke

抄録

We investigated the reliability, validity, and responsiveness of the mandibular activity measurement of mastication initiation training foods using a three-axis accelerometer of patients with dysphagia after a stroke. The reliability and validity were examined in 16 healthy dentate subjects (12 males and 4 females, with a mean age of 47.7 ± 18.7 years, healthy group) and in 16 dentate patients with dysphagia after a stroke (10 males and 6 females, with a mean age of 62.3 ± 16.9 years, patient group). Ten patients (7 males and 3 females, 57.1 ± 15.6years) who underwent mastication training for approximately 1 month were included in the study for responsiveness. The test food was 6g of food for mastication initiation training (Process LeadⓇ, Otsuka Pharmaceutical, Tokushima, Japan). A three-axis acceleration sensor (UB-301 BT, A&D, Tokyo, Japan) was used to measure mandibular activity. The measurement conditions in this study were found to be reliable and valid for a cross-sectional comparison between healthy subjects and patients. However, it was not possible to determine the effect of chewing training (responsiveness). (J Osaka Dent Univ 2022; 56: 87-98)