林業造林作業の生体負担について : 機械化にまつわる問題点

概要

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In the mechanization of industrial work, it is nor desirable hygienically that the mechanization increases not only the work output, but also the physical and mental loads on the workers. Based on this, studies were made on the work performance and fatigue of two groups (A and B) of the workers, engaged in afforestation, one cutting the bush with the reaping hook and the other with the machine (bush cleaner). Results were as folows: 1. Daily consumption of energy was higher in Groups A than in B, amounting to 3840 Cals., and 3220 Cals. respectively. 2. In spite of the above date, weekly values of physiological tests such as flicker fusion frequency, visual near point, and threshold of knee reflex, underwent significantly greater variation in Group B than in A. 3. Tests with the first urine specimens in every morning showed a tendency in values of Donaggio reaction and uropepsin excretion, and of the others, indicating that Group B was significantly in more stressful condition than A. 4. Values of the above tests changed more greately in B than in A during daily working hours. 5. From the above results, the following two points was thought to be desirable; namely, one is to interpose a rational recess during the driving time of the machine, the other is to improve technically the machine weighing 15 kg and transmitting great vibrations to the bodies of the workers.
社団法人日本産業衛生学会の論文
1963-10-20