The number of residents in care facilities has increased with the increase in the number of elderly people in Japan. In the previous study, we reported that meal assistance was the most difficult service performed by the care staff. We also reported that swallowing detection using an accelerometer was easier than detection using EMG methods. In this study, we determined a suitable position of the accelerometer to detect a swallowing. The integrated acceleration (iAcc) value at the sternohyoid

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... scle was significantly larger than that at other positions. We developed a device that equipped an apron with an accelerometer. The device was evaluated, and the iAcc value during swallowing was significantly larger than that during rest in both the young and the elderly people.