看護動作の筋電図学的分析（その１）
－移動動作モデルの周波数成分－
1986 年 9 巻 4 号 p. 4_5-4_19
詳細
1986 年 9 巻 4 号 p. 4_5-4_19
The purpose of this study is to describe the relationship between the action of lifting and drawing a patient on a bed by the nurse and the muscles used in such actions. The surface electromyogram (sEMG) and the power spectrum were recorded on m. biceps brachii, m. trapezius, m. latissimus dorsi and m. quadriceps femoris. A comparison was made between the motion of lifting and drawing by the ratio of the amplitude and the integrated pattern, as well as the dominant peak value and distribution of frequency in the power spectrum.
Results were as follows:
1) By conventional sEMG, the ratio of peak-to-peak amplitude and that of the integrated pattern during the drawing action were lower than that for the lifting action on those four muscles. Based on the experiment results, the drawing action can be seen as being the better action for muscular exertion and preferable to lifting when moving a patient on the bed.
2) In power spectrum, the dominant values of peaks and the area of frequency distribution are the most important factors to express the characteristics of action potentials. These two factors did not always show the same tendency.
Care should be taken in the assessment of data, because the mechanical quality of instrument may influence the peak value and the distribution.
