体力科学
Online ISSN : 1881-4751
Print ISSN : 0039-906X
ISSN-L : 0039-906X
29 巻, 1 号
選択された号の論文の9件中1~9を表示しています
  • ISAO HASHIMOTO, DAVID R. LAMB
    1980 年 29 巻 1 号 p. 1-4
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    Prostaglandin E (PGE) and prostaglandins A plus B (PGA+B) were determined by radioimmunoassay in blood plasma obtained from eight men immediately after a progressive arm and leg cycling task to exhaustion. PGE increased by 47 percent from 45 ± 6pg/ml (mean ± SEM) at rest to 66±8pg/ml after exercise, but PGA+B were unaffected by the work. The cause of the exercise-induced elevation of plasma PGE is unknown, but may be associated with PGE release from working skeletal muscle.
  • 湯浅 景元, 矢田 秀昭, 朝比奈 一男
    1980 年 29 巻 1 号 p. 5-10
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    本研究では, 作業に参加する筋量や筋群の数が最大下作業中の呼吸循環応答におよぼす効果を明らかにするために, 3名の健康な男子被検者を対象として, 最大下の腕, 脚, および「腕+脚」作業中の酸素摂取量 (VO2) , 心拍数 (HR) , 換気量 (VE) 応答を比較検討した。「腕+脚」作業では, 腕と脚の作業強度の総和に対する腕作業強度の占める割合 (A/A+L) を変えて作業を行なわせた。本研究で得られた結果は次のようである。
    1) 同一の作業強度におけるVO2とVEは腕作業で急激な上昇がみられた, 「腕+脚」作業では, A/A+Lに関係なく同様の結果となった。脚作業の結果は「腕+脚」作業と同様であった。
    2) 同一の作業強度やVO2におけるHRは腕作業でもっとも高く, A/A+Lが14~33%の「腕+脚」作業でもっとも低かった。脚作業では, A/A+Lが43~60%の「腕+脚」作業よりもわずかに高いHRを示す傾向がみられた。
    3) 以上のように, 他の作業様式に比較して腕作業ではHRの上昇が著しいことから, 作業に参加する筋量や筋群の数が少ないほど1回拍出量は減少し, また精神的緊張状態に関連して交感神経性緊張が高くなることが考えられる。さらに, 「腕+脚」作業では同一の作業強度やVO2におけるHRはA/A+Lの変化によって変動するが, 1回拍出量の決定因子である心室充満圧と正の相関関係にあるVEが変化しなかったことから, 多くの筋群が活動に参加するときには, 作業中の交感神経性緊張は各作業筋群への負荷強度の配分方式によって決定されると考えられる。
    本研究の一部は1977年10月, 第32回日本体力医学会で発表した.
  • ―分娩前と分娩後における皮脂分泌の変動―
    坂本 佳寿美
    1980 年 29 巻 1 号 p. 11-20
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    Determination of work intensity of isometric exercises and mental works from the viewpoint of O2 consumption is not easily accepted, In an attempt to overcome such shortcomings, skin surface lipid metabolism has been examined. As an extention of the preceding effort, in the current study, the changes of the skin surface of the forehead of pregnant women has been analized by use of gas chromatography.
    1) The secretion of the fatty acids was quite variable among the subjects, indicating the tendency of great individual differences.
    2) Largest mean values among nine fatty acids examined were observed to be C16, C16-1, C18 and C18-1. On the other hand, most frequently appeared fatty acids were C14, C 16 and C18.
    3) The composite ratios of fatty acids among those who recorded presence of these FAs, were 54% for C16, 27% for C18, 8% for C18-1, 5% for C16-1, and 5% for C14.
    4) The amount of secreted FAs at the post-labour period was found to be about 10 times larger than those at the pre-labour period.
    5) Subjects who recorded near 4 hours of pains hours (which is just about the average) showed less secretion of FAs than those whose pains hours were longer and shorter than 4 hours.
    6) Subjects whose time of labour were in the afternoon recorded greater amount of FAs than those with their labour in the morning.
    7) The changes in the amount of secreted FAs at the time of labour coincided with the general pattern of seasonal changes of FAs secretion.
  • KOJI TSUJI, HIDEO KOISHI, YOSHIHO KATAYAMA
    1980 年 29 巻 1 号 p. 21-32
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    It is recently observed that there is in a tendency toward obesity or deficiency of endurance to the physique among schoolchildren. Consequently there is much interest for exercise through our nation.
    Noting these facts, we conducted experiments similar to those previously reported for getting basic data of body composition, by loading 28-days exercise on male rats on 8 percent and 20 percent casein diets.
    1. The food intake of the exercise groups was smaller than that of the control in each pair. During the exercise period, food intake of group II also showed similar decreases to those in group I, however, during the rest period, food intakes increased as compared to those of the control. In comparison of caloric requirement for 1g increase of body weight, exercised rats showed higher calories than the control in exercise periods. In the rest period, however, these caloric values decreased as compared with the control.
    2. For organ weight per 100g of body weight, significant difference was observed in the heart and kidneys. The gastrocnemius muscles showed almost similar values to the control. The liver and testes did not differ in the weights per 100g of fat free mass of body between the exercise and the control groups.
    3. The water contents (%) in the carcasses of exercised rats each fed the 8% and 20% casein diets in group I and I' differed significantly when compared with the control animals, but there was no difference in the water contents of the organs of all groups.
    4. In the case of exercised rats in groups I and I', body lipid contents (%) were significantly lower than that of the control group, irrespective of the protein levels in the diets. On the other hand, for rats fed the 8% casein diet in group II, there was no difference in lipid content (%) in the carcasses as compared with the control rats. In the 8% and 20% casein diet groups, lipid contents (%) in the liver of exercised rats in groups I and I' also decreased considerably compared with the control level. In group II, the lipid content in the liver recovered to the control level or had a tendency to increase slightly.
    5. The differences of body weight between the control and the exercised rats in each group were nearly equal to the difference of the sum of body lipids and water contents in the whole body between the two groups. From these data, it was suggested that the differences of body weight in each group between the exercised and control rats could be explained as the changes of lipids and water contentes in the body.
  • 岩垣 丞恒, 小林 啓三, 小林 康孝, 高橋 明, 有吉 正博
    1980 年 29 巻 1 号 p. 33-44
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    学生並に一般の長距離走者に“24時間リレー”を負荷し, 種々の身体機能の変化を継時的並びに定量的に分析し, 次のような結果を得た。
    1.学生長距離走者の1600m平均疾走時間の延長は約8~10回目 (12.8~16km) で明らかに認められるようになった。この出現には鍛練の差があり, 一般の長距離走者では短かく, 約5~6回目 (8~9.6km) に認められた。
    2.1600m平均疾走時間とその標準偏差との間には正の相関 (r=0.55) があり, その回帰方程式はy=0.57X-162.3であった。一般の走者ではこの相関係数がr=0.53でその回帰方程式はy=0.348X-93.7となり, 学生長距離走者では一般走者に較べ疾走時間のばらつきが大きかった。
    3.1600m疾走時間の大きな標準偏差 (±20sec) の出現時期は学生及び一般長距離走者間には差がなく, その約13回目 (約22.4km) であった。
    4.体重減少量並びに1600m平均疾走時間の経過は相互に関連しているように思われるが, 体重減少量は気温, 湿度以外に風力並びに鍛練度の違いに大きな影響を受けた。体重減少の経過には初期とその後の経過とに違いが認められた。初期の体重減少量は最終体重減少量の約30~70%をしめ, 5~6回 (8~9.6km) まで連続した減少を示した。その後体重の増減を繰り返し, 経過も緩やかとなった。この経過を経ない走者は大きな減少を示した。
    5.運動時心拍数は昼夜のどの走行においても180~189拍/分に達していた。安静時心拍数には日内変動が明確に認められたが, 被験者群では対照群よりいずれの時刻においても高く, 収縮期血圧も低下する傾向にあった。
    6.膝蓋腱反射閾値並びに光反応時間には競技開始初期に亢進する傾向が認められた。しかし, 前者はその後日内変動を示し, 対照群との差は認められなかった。後者ではその後, 約30msec延長し, 競技終了時まで持続していた。しかし, 自覚症状の訴え率では総訴え率, 身体, 精神, 神経感覚症状共に33%, 20%, 25%となり, 酒井の規準をはるかに越えた訴え率となっていた。
    7.学生長距離走者の1日当りの摂取カロリーは1240~2540Calであったが, 消費カロリーを平均速度, 総平均疾走時間, Warming-up時間, 安静代謝等を考慮し概算すると7457Calであった。
    この背景には生体内での脂肪酸の動員並びに血糖の維持が関与していることが明らかとなった。
  • 猪口 清一郎, 岩本 壮太郎, 石川 博, 東 慶紀
    1980 年 29 巻 1 号 p. 45-51
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    The muscle fibers of M. rectus abdominis from 3 sportsmen (Weight-lifting, Boxing and Body-building) were examined histologically and compared with the mean of 22 human control subjects. Following results were obtained.
    1. Compared with the M, rectus abdominis of control subjects, the sportsmen's rectus abdominis muscle area was about 4 times the cross-sectional area of muscle belly and the number of muscle fibers per sq, mm, were 1/3 that of the control specimens. The total number and mean size of sportsmen muscle fibers corresponded to the respective maxima of the controls, and the muscle fiber density in sportsmen corresponded to the minimum control value.
    2. Comparing the myofibrous organization of 3 specimens, the muscle of the boxer was largest in cross-sectional area, in frequency of muscle fibers with large diameter, and in volume of interstitial connective tissue. It was the smallest of the 3 specimens in the number of muscle fibers per sq. mm. We found that the muscle of the weight-lifter was intermediate in these four categories.
  • (Donaggio反応に関する研究―第2報―)
    大森 祥夫
    1980 年 29 巻 1 号 p. 52-57
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
    The purpose of this studies is to investigate the Donaggio reaction positive substances in serum, by the same method as urine.
    'Obstacle phenomenon for precipitation of methylen blue and ammonium molybdate' had been also observed to be positive in serum.
    Under the influence of stress (not only strenous physical exercise but also rest state, derived from the mainly catabolating of connective tissue), these substances had been guessed to pass into blood stream and thereafter into the urine.
    Donaggio titer in serum solution only could not be measured by Sato's standard method, because of coagulation and impossibility of precipitation on deproteinization. It was found to be able to measure by mixing urine to serum.
    Results obtained were as follows
    1) Diluted serum, by mixing of utrafiltrated urine, kept high level of Donaggio titer.
    2) Donaggio titer in serum decreased by deproteinization at pH. 5, especially by heat 100°C for 10 minutes.
    3) Semi-quantitative isolation were performed by means of electrosyneresis, α1 acid glycoprotein (α1-AG), α1-anti trypsin (α1-AT), α1-anti xymotrypsin (α1-X) in α1 globulin region and Zn binding α2-glycoprotein (Zn-α2), α2 HS-glycoprotein (α2-HS) in α2 globulin region were identified as Donaggio positive substances from deproteinized serum.
    Furthermore, identity of Donaggio positive substances between serum and urine must be examined by immunological technique, for example-line-immunoelectrophoresis.
  • 1980 年 29 巻 1 号 p. 58-63
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
  • 1980 年 29 巻 1 号 p. 64-66
    発行日: 1980/03/01
    公開日: 2010/09/30
    ジャーナル フリー
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