洗髪での対象者の頭部のゆれや実施者の力加減は安全,安楽の重要な要素である。学生は対象者に頭部のゆれや指の力加減を尋ねたり,指導者の手技を見るなどで体験的に学習している。そこで学生に洗髪技術を教授する際,対象者の頭部の動きを小さくする手の動かし方や,「気持ちよい」指の力加減を客観的に評価できるモニタリングシステムの開発が必要である。本研究は,洗髪実施者の腕の動きと被験者の頭部のゆれ,指の圧と「気持ちよさ」との関連を明らかにする目的で行い,対象者が「気持ちよい」とする手の動かし方や力加減を洗髪動作測定装置により定量化することができた。実施者の腕の動きがリズミカルであれば,被験者の頭部に姿勢制御が働き,腕の動作に対する頭部の動きは相対的に小さい。また,被験者が「ちょうどよい」とした実施者の指腹に取り付けたセンサにかかる荷重は1.4Nから8.8Nの範囲であり,第2指,第3指,第4指のうち,1指に集中的に圧がかかっていた。

In shampoo techniques, a feeling of comfort and safety when the subject's head is being moved, or when finger pressure is being applied, is an essential element. Our students learn these skills experientially by observing the techniques of supervisors and by asking for the impressions of other students during self-practice sessions. For one method in such experiential learning, we devised an instrument for measuring the technique of shampooing. The purpose of this study was to develop a monitoring system which could evaluate objectively finger pressure that "feels good", and ways of moving the hands that will reduce head movement for the subject. The results of our study clarify and quantify aspects of these techniques: first, when the student's hand movements were rhythmical, his or her movement to control the subject's head position became smaller, as did the movement of the subject's head relative to the arm of the student performing the shampoo ; second, the application of the fingers which produced a feeling of "just right" in the subjects varied in a pressure range from 1.4N to 8.8N, and required that one of the three middle fingers be the principal means of exerting the pressure.

原著

Original Article

国立情報学研究所で電子化