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ウエダ ヒロユキ
ueda hiroyuki
上田 博之 所属 大阪信愛学院大学 看護学部 看護学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 1995/03 |
| 形態種別 | 研究論文（学術雑誌） |
| 査読 | 査読あり |
| 標題 | SEASONAL-VARIATION IN PHYSIOLOGICAL-RESPONSES TO MILD COLD-AIR IN YOUNG AND OLDER MEN |
| 執筆形態 | 指定なし |
| 掲載誌名 | INTERNATIONAL JOURNAL OF BIOMETEOROLOGY |
| 出版社・発行元 | SPRINGER VERLAG |
| 巻・号・頁 | 38(3),pp.131-136 |
| 著者・共著者 | Y INOUE,M NAKAO,H UEDA,T ARAKI |
| 概要 | Eight men aged 60-65 years and six men aged 20-25 years, wearing only swimming trunks, were exposed to an air temperature of 17 degrees C and 45% R.H. in each of the four seasons. The increase in the rate of metabolic heat production (%Delta M) for the older group in the cold test was significantly higher in summer and autumn than in winter and spring (P<0.05), but did not differ in the young group between seasons. Compared to the young group the %Delta M was significantly greater for the older group (due to a marked increase in four individuals) in summer and autumn (P<0.04). At the end of the period of cold exposure, the decrements of rectal temperature (Delta T-re), mean skin temperature (T-sk; due to a marked decrease in four individuals) and foot skin temperature (T-foot) were significantly greater for the older group compared to the young group at all times of the year (P<0.003). Seasonal variations in the two groups were similar, e.g., the Delta T-re gradually became smaller from summer to winter (P<0.05) and then increased slightly in the spring (P=0.07). T-foot for both groups decreased from summer to autumn (P<0.01) and remained unchanged subsequently. No seasonal variations were observed for T-sk in either group. The increase in diastolic blood pressure sure (BPd) during the test was significantly smaller in winter in both groups (P<0.05). BPd became larger again during spring in the older group (P<0.01), but remained low in the young group. The BPd was significantly greater for the older group than the young group in winter and spring (P<0.05). Compared to young men these results suggest that older men may lose the tolerance acquired by earlier cold acclimatization as seen by the BPd responses, and have a somewhat lower thermoregulatory capability in coping with mild cold air in all seasons. |
| ISSN | 0020-7128 |