Studies on the digital vascular hunting reaction in cold air with special reference to the effect of physical training.
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概要
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Twelve male non-athletic and 93 male athletic university students (16 volleyball players, 15 basketball players, 11 long-distance runners, 10 baseball players, 10 table tennis players, 8 throwers, 10 rugby football players, 5 weight lifters and 8 practitioners of martial arts) were selected as subjects. Experiments were performed at 1500 hours in winter. Each subject took a rest on a chair for 30 min at a room temperature of 22°C, after which the subject exposed his left hand distal to the wrist to cold air at -10°C for 30 min. The skin temperature at the central part of the dorsal surface of the distal phalanx of the left middle finger was recorded continuously from 5 min before cold exposure, to 50 min after the beginning of exposure. The results obtained indicated that the higher the skin temperature of the finger before cold exposure, the shorter were the times for the first temperature rise and recovery, and the higher were the initial temperature rise and the mean skin temperature during cold exposure. The mean skin temperature tended to be lower in subjects with longer finger length. The mean skin temperature of long-distance runners, throwers and rugby football players tended to be higher in spite of a lower skin temperature of the finger before cold exposure. Practitioners of martial arts showed the lowest mean skin temperature. Volleyball players showed a lower mean skin temperature despite having a higher finger skin temperature before cold exposure when compared with nonathletes.
- 日本生気象学会の論文
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