体力科学
Online ISSN : 1881-4751
Print ISSN : 0039-906X
ISSN-L : 0039-906X
27 巻 , 4 号
選択された号の論文の4件中1~4を表示しています
  • MICHIKATSU KONNO, TOSHIKI CHIWATA, MAKOTO YASUNAGA
    1978 年 27 巻 4 号 p. 135-139
    発行日: 1978/12/01
    公開日: 2010/12/10
    ジャーナル フリー
    Measurements of heart rates during usual activities, maximal aerobic power and skinfold thickness were carried out as a basic research for the comparative study of the optimal load for successful living in modern society or in future ages. 18 urban sedentary male workers who came to work by car and were 19-38 years of age were selected as subjects.
    The mean and S.D. of the maximal aerobic power was 35.8±5.2ml/kg/min, and those of 15 subjects (83%) were below 40ml/kg/min. The means of 12-hr heart rates during usual activities ranged within 71.5-95.0 beats/min. The mean and S.D. of the maximal heart rate during usual activities was 113±10 beats/min; 61±4% of their maximal heart rates during exhaustive exercises. Significant correlation was found between the maximal heart rate during usual activities and maximal aerobic power.
  • 西平 賀昭, 藤田 紀盛, 荒木 秀夫
    1978 年 27 巻 4 号 p. 140-148
    発行日: 1978/12/01
    公開日: 2010/12/10
    ジャーナル フリー
    Kornhuber & Deeke (1965) 4) の研究報告以来, 随意動作に伴なって頭皮上に4つの電位変化が出現することがわかっている。本研究においては, 4つの電位変化の中のN1電位に特に論旨を限定して, 著者たちの予備実験や柴崎の報告8) にある通り, 「N1電位は導出部位Czを除けば, ほとんどの結果が動作肢と反対側の運動野相当部位上で優位を示した。」という結果を, 双極導出法を用いて詳細に確認することが本研究の目的である。さらに, 加えて自発動作に先行して頭皮上に出現する陰性電位は予告刺激のみに依存して出現するのか, それとも動作駆動の準備状態形成に関与するものなのかも検討し, CNVとN1電位の相違を論じることも本研究の目的の一つである。
    本実験の結果を要約すると次のようになる。
    1.単極導出法で得た結果, N1電位の振幅はすべての動作遂行において, 導出部位Czで最大を示した。
    2.双極導出法で得た結果は, N1電位の振幅は中心領内の組合せにおいては, 相対的に低い傾向を示し, 中心領と他の導出部位との組合せにおいては, 相対的に高い傾向を示した。
    3.頭皮上全体から判断すると, N1電位の振幅は中心領野において高い傾向にあった。
    4.特に, CNVの潜時とN1電位のそれの間には明白な相違が確認された。
    5.CNVは, 導出部位Czを除いて, ほとんど同じ振幅を示しながら, 前頭から中心領まで広範囲に出現した。
  • TSUTOMU ARAKI, YOSHIAKI TODA, YOSHIMITSU INOUE, AKIRA TSUJINO
    1978 年 27 巻 4 号 p. 149-156
    発行日: 1978/12/01
    公開日: 2010/09/30
    ジャーナル フリー
    A study was performed to elucidate the effect of physical training on the cold tolerance in human beings. Physically well trained men (T group) and untrained ones (U group) were exposed to cold stress in summer and winter. Each subject was dressed in experimental clothes and exposed to 10°C DB for 60 minutes in both seasons. Moreover, he was exposed in the semi-nude to 20°C DB in summer and to 17°C DB in winter for 60 minutes. During the period of exposure to cold, rectal and mean skin temperatures and respiratory metabolic rate were measured. To confirm the training effect further, the untrained men were asked to follow an experimental training program of daily routine which consisted of about 7 km outdoor running for 40 consecutive days in July and August. Before and after the training, they were exposed to the same cold stress as in the aforementioned summer experiments and subjected to the same measurement. Resting metabolic rate was higher in the T group than in the U group. Although no significant group differences were shown in the metabolic rate during the period of exposure to cold, the rate of increase from the resting value was lower in the T group than in the U group. There were no group differences in rectal or mean skin temperature during this period. When the untrained men were subjected continually to physical training, the resting metabolic rate was higher and the rate of increase from the resting value during the period of exposure to cold lower after the training than before. It was concluded that physical training could be a means to increase the cold tolerance.
  • 1978 年 27 巻 4 号 p. 167-259
    発行日: 1978/12/01
    公開日: 2010/09/30
    ジャーナル フリー
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