著者
Tsutomu SUDA(須田力) Kazuki TAKIZAWA(瀧澤一騎) Nobuyoshi KONISHI(小西信義) Satoshi OMIYA(大宮哲) Shun TSUTAKI(津滝俊)
出版者
公益社団法人 日本雪氷学会
雑誌
Bulletin of Glaciological Research (ISSN:13453807)
巻号頁・発行日
vol.37, pp.11-21, 2019 (Released:2019-11-08)
参考文献数
17

The purpose of this study was to examine the physiological responses to intensive snow shoveling. The subjects were six males (25-71, 50±8 years) who participated in a snow removal volunteer tour. Prior to the tour, each subject engaged in a cycle ergometer test (Test 1) and a multistage shoveling test (Test 2) to evaluate the relationship between volume of oxygen consumption (VO2) and heart rate. Field measurements were performed in Miruto of Iwamizawa City, Hokkaido, Japan on February 2, 2014. Average air temperatures of that day were -6.3°C in the morning and -1.4°C in the afternoon. The snow layer at the work site had various grain shapes and snow density linearly increased with snow depth. While snow hardness increased exponentially with increase in snow depth. Mean heart rate during working time in the afternoon (142±9 beats min-1) was significantly (p<0.01) higher than that in the morning (131±9 beats min-1). These heart rates correspond 84% and 77% of the predicted maximum heart rate (HRmax), respectively. Ratings of perceived exertion were not different in the morning (12.9±0.4) and afternoon (12.4±0.3). The mean values of VO2 in the total work period (111±3 min) was estimated to be 22.2±1.2ml kg-1min-1 (Metabolic equivalent; 6.4±0.3METs). Estimated energy expenditure averaged 782±46kcal. It is conceivable that increase in snow hardness and snow density caused an increase in work intensity.
著者
小西 信義
出版者
日本文化人類学会
雑誌
日本文化人類学会研究大会発表要旨集 日本文化人類学会第47回研究大会 (ISSN:21897964)
巻号頁・発行日
pp.41, 2013 (Released:2013-05-27)

除排雪に関わるリスクは豪雪過疎地域では切実な課題である。この課題に対し、人びとがどのように対応しているかを明らかにするため、岩見沢市美流渡地区で経験的観察を行った。その結果、人びとは自然環境や個体を取り巻く状況に応じ、個体または集団の行動戦略を採っていることが明らかとなった。さらに、これらの行動戦略が互恵性に基づく活動であることを検討し、豪雪過疎地域における課題解決に寄与していることを指摘する。