急勾配地の下刈作業における作業者の心拍数変化と作業時間について

概要

論文の詳細を見る
In this report, the workers' heart-rates and one-continuous work period for forest brush-cutting on a steep area are discussed. After measurements, data were analyzed by the quantification method and the method of multiple regressions. The % HRmax. during one continuous work period was more than 60% for nearly all cases with a maximum of 75%. The data indicated that forest brush-cutting on a steep area is difficult and potentially stressful work. The % HRmax was significantly effected by the machine used (p<0.01), the weather (p<0.01) and the worker (p<0.01). The % HRmax. was the largest for work by a 8.3 kg hand-type brush-cutter, whereas the smallest for work by a scythe. For the factor of weather, the results showed the largest % HRmax. during light rains and the smallest during cloudy times. The one-continuous work period had an inverse relationship with % HRmax. The results also indicated that the recovery of heart-rate to normal is faster in the moming than in the afternoon and also faster at a lower temperature than at a higher temperature when the temperatures are more than 20℃.
日本森林学会の論文
1990-05-01