体力科学
Online ISSN : 1881-4751
Print ISSN : 0039-906X
ISSN-L : 0039-906X
46 巻 , 4 号
選択された号の論文の11件中1~11を表示しています
  • 徳山 薫平
    1997 年 46 巻 4 号 p. 343-354
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
  • 金 憲経, 田中 喜代次, 重松 良祐
    1997 年 46 巻 4 号 p. 355-364
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    The purpose of this study was to investigate activity fitness of daily living of elderly women in Korea. The subjects were 253 elderly women ranging in age from 65 to 84 years. Twenty items related to the activity fitness of daily living were measured. The Pearson's correlation coefficients between the performance test items and age were significant (P<0.05) and the score of all items remarkably decreased with advancing age. In order to extract activity fitness of daily living, the principal component analysis was applied to the 20×20 correlation matrix. The first principal component was interpreted as fundamental activity fitness (FAF) of daily living. The results of the comparison clearly indicated that the 75-79 and 80-84 age groups were inferior in FAF of daily living. Furthermore, in order to analyze the factorial structure of these elderly women, extracted factors were rotated with normal varimax criterion. The activity fitness (AF) of daily living were categorized to 7 factors : muscular strength and movement of the whole body, flexibility, balance, coordination of upper limbs, agility of upper and lower limbs, endurance, and reaction time. Results of the comparison of AF factors showed that a decline with advancing age was significant for muscular strength and movement of the whole body. The prediction equations of FAF were developed using multiple regression analyses. Results indicated that 8 selected items from 7 factors were significant predictors of the dependent variable FAF. Equally clarified was that 3 of our 8 items could be excluded, while still yielding comparable precision in predicting FAF. On the basis of all our analyses and considering the practicability of the measurement, we recommend the equation FAFS=1.504 X1-0.838 X2-0.489 X3-0.363 X4-0.686 X5+68.71, with an R=0.850; where FAFS=fundamental activity fitness score, X1=arm curl, X2 walking around two chairs in a figure 8, X3=one foot tapping in a sitting position, X4=sit and reach, X5 carrying beans using chopsticks, which can predict FAF with high precision in elderly Korean women.
  • 齋藤 実, 稲山 貴代, 前田 清司, 松田 光生
    1997 年 46 巻 4 号 p. 365-373
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    Although it has been established that exercise is useful for health promotion, physical exercise may induce oxidative stress in humans. Our previous study showed that the concentration of plasma protein-bound sulfhydryl groups (p-SHs) was significantly decreased after strenuous exercise, i. e. full-marathon running and participation in an athletic training camp. Reactive oxygen species may cause oxidation of plasma proteins in vitro. To study whether moderate exercise for health promotion, e. g. jogging or walking, induces oxidative stress in human circulating blood, the authors examined the change in plasma p-SHs concentration following ergometric exercise at moderate intensity and of relatively short duration {Exercise 1: 80% ventilatory threshold (VT), 100% VT, and 110% VT; 30 min, Exercise 2 : 90% VT; 120 min} in 8 (23-28 yr; Exercise 1) and 6 males (23-28 yr; Exercise 2) respectively. The plasma p-SHs concentration did not changed significantly after Exercise 1 or 2. The data indicated that the exercise did not cause significant modification of plasma proteins, suggesting that it did not induce significant oxidative stress in the circulating blood.
  • 秋坂 真史, 尾尻 義彦, 高倉 実
    1997 年 46 巻 4 号 p. 375-381
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    In order to obtain the basic data for the relationship between factors related to sports and bone density of high school girls, bone densities of a heel were measured, and physical characteristics and living backgrounds on exercises were surveyed. The subjects were one-hundred and forty two girls (15-18 years, mean±SD=16.5±0.84 years) of a high school in Nagano prefecture, accepted our visiting bone health check. Bone density was measured by ultrasound bone-densitometer ‘Achilles’ (Lunar) . As for the data, we obtained the stiffness index (Stiffness) with a self-registered questionnaire for the items of physical and exercise factors for the girls in puberty. High school girls who belong to a sport club have significantly higher bone density than other girls. In detail, those who do the sports which consist of mainly running or jumpping, have significantly higher bone density than others who do no sports. There also were significants on the kinds of sports, on the frequency of sports and on the duration of sports. Moreover, those who had the regular sports history have higher bone density than those who had no regular sports history, and the mean Stiffness of the group that care to do physical exercises daily was higher than those who do not care to do exercises. These results suggest that there are many kinds of factors related to sports which favourably contribute to obtain sufficient bone mass of high school girls who are in a developmental stage.
  • 水沼 俊美, 菊石 五月, 坂井 堅太郎, 山本 茂, 山上 文子, 木路 修平, 河野 匡, 川野 因, 高橋 保子
    1997 年 46 巻 4 号 p. 383-388
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    We performed dietary guidances for 15 male elite athletes (23±3 years of age) participating a training program for vigorous endurance run. Nutrient allowances for the athletes were determined by the guidelines of Japanese Dietary Allowances (5 th ed.), considering their physical activities at the highest level IV; total energy 3, 500 kcal, protein 140g, lipid 100g, carbohydrate 510g, calcium 1, 500 mg, iron 25 mg, vitamin A 8, 000 IU, thiamine 4.0 mg, riboflabin 5.0 mg and vitamin C 200 mg per day. We also developed food group allowances for the athletes based on their nutrient allowances and current young-aged Japanese dietary styles ; cereals 400 g, potatoes and starches 60 g, sugars 20 g fats and oils 30g, pulses 120g, meats 150g, fishes and shellfishes 150g, eggs 80g, milks 600g, green and yellow vegetables 300 g, the other vegetables 350 g, fruits 400 g and algae 20 g per day. For the experimental period of 45 days, daily diets adjusted to approximate 120% of the dietary allowances were served to the athletes who were free taking snacks and drinks. Dietary guidances for the athletes were assessed by monitors of their dietary intakes, physical constitution and clinical examinations in blood. Means of the dietary intakes of the athletes were 96-99% of the dietary allowances, determined by a nutritional survey with the 24 hrs recall method. There were less changes in the physical constitution of the athletes before, during and after the experimental period; body weight 57±2 kg and body fat 8.8 ± 2.4%. Values of the clinical marks in the blood of the athletes were maintained normally for a half year including the experimental period; red blood cells 507±9×104 cells/mm3, hemoglobin 15±0.4g/dl and hematocrit 46.6±0.7%.
    It is concluded that suitable nutritional guidances and managements for young-aged male vigorous endurance runners lead good in their health and physical maintenances, which may have important consequences for their physical development as elite athletes.
  • 鈴川 一宏, 熊江 隆, 荒川 はつ子, 石崎 香理, 伊藤 孝, 内山 巌雄
    1997 年 46 巻 4 号 p. 389-398
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    感染症に対する最初の防衛機構として重要な貪食細胞の活性に関する研究は未だ少ない.本研究では, 成長後のWistar系雄性ラットを用いて, 強制運動あるいは昼夜逆転による睡眠妨害, およびその両負荷を組み合わせた場合について, 気管支肺胞洗浄液中の細胞分画と肺胞マクロファージ活性に及ぼす影響について検討することを目的とした.また, 強制運動と自発的運動との比較検討も併せて行った.
    本研究の結果より, 強制運動を行わせたTraining群, および慢性疲労モデルとしたT+J群は体重の増加が抑制された.また, 自発的運動を行わせたVoluntary群においては11週齢から12週齢の間のみは体重の増加がみられなかったが, 13週齢以降は順調に増加した.この体重の変化は餌の消費量に影響を受けているものと思われた.気管支肺胞洗浄液中の細胞数については, Voluntary群では顕著な増加を示し, 逆にTraining群およびT+J群ではControl群と比較して減少する傾向にあった.また, 肺胞マクロファージの活性に関しては, T+J群ではスーパーオキシド産生能が低下している可能性があった.したがって, 総合的にみるならば強制運動および睡眠妨害をラットに同時に負荷した場合においては, 2種の負荷が生体に相加的に働き, 体重の増加が抑制され, さらに免疫機能が低下する可能性が考えられた.一方, Voluntary群では肺胞マクロファージ活性と細胞数の変化を総合的にみると, 肺における非特異的な免疫能が向上し, 感染症への抵抗力が向上している可能性が考えられた.
  • 塚中 敦子, 松井 信夫, 梅村 義久, 石河 利寛
    1997 年 46 巻 4 号 p. 399-403
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    A study was performed to examine the effect of plasma lactate concentration on intravascular hemolysis during exercise. Seven men performed maximal and submaximal exercise on a cycle ergometer. The maximal exercise was performed as a graded exercise until exhaustion. The mean performance time of the maximal exercise was 15 min and 4 s. The submaximal exercise was performed for 30 min at 50% HRmax. Blood samples were obtained before, immediately after, and one hour after exercise. Plasma lactate concentration, hematocrit (Ht), and serum haptoglobin concentration (Hp) were measured. Hp was corrected by Ht for hemoconcentration and expressed as HpC. Plasma lactate concentration was elevated significantly (p<0.05) immediately after maximal exercise, and returned to the baseline values one hour after exercise, whereas plasma lactate concentration did not change after submaximal exercise. Hp and HpC did not change even after maximal exercise. These results suggest that the elevation in plasma lactate concentration may not affect intravascular hemolysis during exercise.
  • 八田 有洋, 西平 賀昭, 下田 政博, 麓 正樹, 池田 仁, 竹宮 隆
    1997 年 46 巻 4 号 p. 405-413
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    Event-related potentials (ERPs) were recorded from 9 normal subjects engaged in a somatosensory target discrimination task. Subjects were instructed (1) to keep a mental count of each target or (2) to rotate a grip in the direction of abduction after each target stimulus using the right hand. Target stimuli were electrical pulses delivered randomly through ring electrodes to the left second digit with probabilities of 0.2, and nontarget stimuli were delivered to the left fifth digit with probabilities of 0.8.
    P 100 was prominent in somatosensory tasks, and had a widespread distribution on the scalp without having any relation to kinds of tasks, therefore, P 100 reflects the sensation of somatosensory stimulation. N 140 was largest at Fz in both counting and movement tasks, so our result supported the hypothesis that N 140 is generated in the frontal lobes regions. Moreover, N 140 latency was shorter during movement than during counting. These results indicate that N 140 is related to carrying out movement. P 300 was largest at Cz during counting, and largest at Pz and C4' during movement. These results also indicate that P 300 may have multiple intracerebral generators since P300 origin differs based on the kind of tasks or stimuli. In addition, the appearance of P300 after nontarget stimuli indicates that P 300 reflects a non-selective postdecision closure of cognitive activity. In conclusion, each component of ERPs may have a specific origin and specific characteristics.
  • 熊谷 秋三, 右田 孝志, 花村 茂美, 日高 己喜, 森山 善彦, 佐々木 悠
    1997 年 46 巻 4 号 p. 415-421
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
    本研究は, 男子大学生の陸上長距離選手 (n=12) のHDL-cと性ホルモン, SHBG及びOBLA-SPで測定された体力との関連性を横断的に検討ことが目的である.陸上長距離選手のHDL-c水準は高水準 (平均67.8mg/dl) にあったが, 大きな個体差 (44~93mg/d1) が認められた.血中エストラディオール (E2) は, Apo AIとの間に有意な正相関を認めた.遊離テストステロンは, HDL3-c及びApo AIIとの間に有意な正相関を認めた.また, SHBGはHDL-c及びHDL2-cとの間に有意な正の相関を認めた.年令, 体脂肪率, 体脂肪分布尺度および体力と脂質代謝指標との間には, 有意な相関は認めなかった.これらの成績より, トレーニングされた陸上長距離選手においても, 男性ホルモンおよびSHBGのみでなく女性ホルモンもHDL-c代謝に深く関与しており, 有酸素トレーニング状態におけるHDL-c水準の個体間変動に性ホルモンの関与が示唆された.
  • 目崎 登
    1997 年 46 巻 4 号 p. 423-426
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
  • 1997 年 46 巻 4 号 p. 427-437
    発行日: 1997/08/01
    公開日: 2010/09/30
    ジャーナル フリー
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