The purpose of this study is to evaluate the nursing motion from the viewpoint of biomechanic during the bed raising and wheelchair riding of patients helped by nurses. The mechanical works for the whole body of two nurses, one was a trained nurse and the other was the student nurse, were calculated. The changes of the works were compared between the two nurses. The performances of the two nurses were videotaped with three video cameras operating at 30 Hz. Three-dimensional coordinates for determining the mechanical work were computed by using Direct Linear Transformation Method from video data. The trained nurse raised the patient more closely to her body than the student nurse, the trained nurse's motion of the CG on the direction of vertical were smaller, so the less work has be done on the direction, and the energy costed to care a patient may be smaller. But in raising a patient on the bed and moving a patient from the bed to wheelchair, the mechanical work of the trained nurse had greater changes than the student nurse. In this movements, to avoid lower back pain, the trained nurse extended mainly her legs to left patient instead of using the extension of her hip. This kind of movement may be cost some energy more but will be safety to the hip of helper.

DESCENTE SPORTS SCIENCE Vol.21/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE