採炭夫の疲労に関する研究
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The physiological fatigue of 22 pit-men was investigated with respect to seasonal variation and shifting. The items of examination were body temperature, pulse, Motokawa's electric flicker, Donaggio-Yamazoe test of urine. The results can be summarized as follows : 1. The fatigue as tested by the flicker is highest in summer and lowest in spring. But that tested by Donaggio-Yamazoe's method is highest in winter and lowest in spring. This discrepancy may partly be due to the fact that the flicker shows the grade of instantaneous fatigue, and the urine test indicates some physiological changes previous to the time of examination. 2. The body temperature is highest in summer and lowest in winter, being influenced by air temperature. 3. The pulse rate examined at entering the pit is highest in summer and lowest in autumn, but that measured at coming out of the pit is highest in spring and lowest in winter. 4. With respect to the shifting, the grade of fatigue measured by the flicker and the urine examination is highest for the third shift (from 10 pm to 6 am), followed by the first (from 6.30 am to 2.30 pm), then by the second (from 2.30 pm to 10.30 pm). 5. The body temperature measured at entering the pit is highest for the first shift and lowest for the third, and that measured at coming out of the pit is highest for the first shift and lowest for the third, corresponding to the change of air temperature. 6. The grade of fatigue with respect to week day is irregular. But the difference of it between at the begin ring and the end of work increases towards week end, especially so in the third shift.
- 九州歯科学会の論文
- 1958-03-31
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