Abstract
The smooth swallowing posture (neck forward flexion posture) and swallowing function training to correspond to the aspiration are described in the medical literature. How to make neck forward flexion(NFF) posture and how to keep NFF posture is the biggest unresolved problem of dining chair development for researchers and developers in medicine and engineering. A dining chair designed to protect the elderly from aspiration and aspiration pneumonia was developed in Japan. We thought that if the function effect of the dining chair was truly demonstrated, it would be valuable information to all the elderly who have troubles in daily meal. We tried to verify the actual effect of the functional structure of the dining chair with electromyograph. As a result of the verification, it was confirmed that the meal with a new posture fixation system exhibited a smooth swallowing effect. The verification result of the dining chair of the new method is nice information for all the elderly in the world who continue to decline swallowing function.
Highlights
In Japan, the aspiration and the aspiration pneumonia of the elderly continue to increase every year, and it becomes a big social problem
The elderly person over 70 years old who is hospitalized with the aspiration pneumonia which is one of the three major causes of death is 20,000 people per day [1]
Suprahyoid muscles activity duration showed a significant difference in NFF posture holding function dining chair 1.13 ± 0.59 seconds, general dining chair 1.43 ± 0.77 seconds (Pvalue=0.045
Summary
In Japan, the aspiration and the aspiration pneumonia of the elderly continue to increase every year, and it becomes a big social problem. The developed chair was a new system dining chair that keeps the upright pelvic ischial tuberosity and posterior superior iliac spine (PSIS) fixed on the seat and seat back to keep the NFF posture. This was dining chair with a function to support the independence of the elderly which substitute of the eyes and hands of caregiver to watch over the eating posture of the elderly [3]. Using the NFF posture holding function dining chair, and the general dining chair, measured EMG of the swallowing muscle during jelly swallowing (Figure 1). Suprahyoid muscles activity duration showed a significant difference in NFF posture holding function dining chair 1.13 ± 0.59 seconds, general dining chair 1.43 ± 0.77 seconds (Pvalue=0.045
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