巻号一覧
34 巻, 5 号
選択された号の論文の6件中1～6を表示しています
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井本 岳秋, 沢田 芳男, 小郷 克敏1985 年 34 巻 5 号 p. 247-258
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリーThis study was designed to examine the relationship between exercise diuresis and running load, following seven types of running events by five male athletes, aged 19 to 25 years. None had a history of renal disease.
Informed written consent was obtained from all subjects prior to the study.
1. Compared to the resting levels, significant increases in the urinary volume were observed thirty minutes after performing a 400-meter dash, but not after the other exercises.
2. The changes in creatinine concentration (30 min after exercise/after warm-up) were inversely proportional to the changes in urinary volume, indicating that exercise diuresis depends on the depressed reabsorption of water in the renal tubules.
3. The absence of diuresis after 60 and 100-meter sprints, indicates that the phosphagen system is mainly employed for energy supply.
4. The urinary volumes after 200, 300 and 400-meter dashs highly correlated with the changes in the excretion rate of pyruvate. This suggests that exercise diuresis is related to the lactic system in energy metabolism.
5. The decreased excretion rate of creatinine after 800 and 1, 500-meter runs indicates that GFR is reduced by these exercises. Furthermore, the lactic energy system caused the diuretic effect. Thus, even though secretion of antidiuretic hormones is increased following exercise, their effectiveness is reduced by lactic oxygen deficit.抄録全体を表示PDF形式でダウンロード (1277K) -
小宮 秀一, 吉川 和利1985 年 34 巻 5 号 p. 259-268
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリー本研究は, 7～77歳までの日本人男子98名を対象に体脂肪率 (%Fat) を推定するための体水分量推定式を検討している.
結果は次のように要約できる.
1) 体水分量とNagamine and Suzukiの式から求めた成人男子71名の体脂肪量と体脂肪率は, 平均値でそれぞれ5.9kg, 93%の差があり, いずれも体水分量から求めた%Fatの方が有意に高い値を示した.
2) 両%Fat間には高い相関が認められたが, 71名全被験者の体水分量からの%Fatはidentity lineの上方に位置し, 傾向線はidentity lineの約9%上方でほぼ平行していた.
3) 両%Fatの差は体脂肪総量, 皮下脂肪厚及び皮下脂肪量とは高い相関を示さず, 体内深部脂肪量との間に高い相関を示した.
4) 形態測定値42変数と体水分量との間で高い相関係数を示したのは体表面積の0.929であった.
5) 体水分量と形態測定値42変数とのstep-wise重回帰分析の結果から, 形態測定値8変数及び6変数を含み重相関係数, 体水分の推定誤差及び%Fatの推定誤差がともにR=0.96, 1.59l, 3.6%である2式 (D) , (E) が得られた.
6) この2式による各被験者の体水分量推定値の実験値に対する誤差平均は+0.007と+0.228で, 標準誤差はそれぞれ4.411と4.578%であった.
7) これらの推定式は適応範囲をみるため, 56名の男女児童に適用された.その結果, 2式 (D) , (E) の推定誤差は男子 (3.85l) , 女子 (5.35l) ともに大きく, 誤差平均, 標準誤差にもかなり大きな値を示した.
8) 男子児童に体表面積を変数とした式 (F) を適用した場合は成人男子とほぼ同等の推定誤差 (2.24l) , 誤差平均 (-0.722%) 及び標準誤差 (8.44%) が得られた.
9) 7歳～77歳までの日本人男子98名の体水分量 (l) を体表面積 (cm2) から推定する式として, TBW, l=0.0027 (BSA, cm2) -11.1210; S.E.E.=1.92l, R=0.963, M.E=-0.246%, S.E=6.187%, の式が得られた.
10) この式によって求められた体水分量からの%Fatの推定誤差は4.55%であった.抄録全体を表示PDF形式でダウンロード (1160K) -
鈴木 聡, 武井 信子, 東 悳彦, 広田 公一, 坂元 晃史1985 年 34 巻 5 号 p. 269-275
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリーWistar系雄ラット (7週令, 体重2009前後) にトレッドミルを用いて8週間の運動を負荷し, それが肝コレステロールの代謝にいかなる影響をおよぼすかについて検討した.運動の条件は, 15m/分, 1, 000m/日, 6日/週であった.運動群ラットは, 同週令の非運動群ラットに比較して, 次のような知見を与えた.
1.体重および肝重量の減少.
2.肝コレステロール量 (総―, および遊離-コレステロール量) の低下.
3.14C-酢酸あるいは14C-メバロン酸の肝コレステロールへの取りこみ (in vivo) の増加.
4.肝切片 (in vitro) での14C-メバロン酸のコレステロールへの取りこみの亢進
5.肝HMG-CoAreductase活性の上昇.
6.肝cholesterol 7α-hydroxylase活性の上昇.
以上のような実験結果は, 運動のトレーニング効果として, 肝コレステロールの代謝回転の亢進を示すものである.抄録全体を表示PDF形式でダウンロード (870K) -
竹倉 宏明, 田中 弘之, 小野 三嗣, 春日 規克1985 年 34 巻 5 号 p. 276-283
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリーThe inter of this study was to observe the effects of training on histochemical and biochemical properties in the skeletal muscle fibers.
Wistar strain albino rats were assigned to endurance (E), sprint (S) and control (C) group at 4 weeks old. Animals of trained groups were trained by treadmill for 12 weeks. After training, all animals were sacrificed and M. Soleus (SOL) and M. Extensor Digitorum Longus (EDL) were taken out.
Using histochemical staining methods for Hematoxylin and Eosin, Actomyosin ATPase and Succinate Dehydrogenase (SDH), area and composition of the three muscle fiber types were examined. Furthermore, the chemical properties of glycolytic and oxidative enzyme activities were examined.
The results obtained were as follows:
1. The E and S trained groups, respectivelly, showed lower increase of body weight than the control group.
2. Hypertrophy of all fiber types in EDL were observed in the both trained groups. Area of SO fibers in SOL were also increased in the E group as compared to the C group.
3. The differences observed for fiber composition among the three groups. The rate of FOG fiber in SOL decreased significantly in the both trained groups as compared to the C group. The rate of SO fiber in both muscles were slightly higer for the E group relative to the C Group, but these differences were no significant. However, in the E group significant increase was observed for oxidative enzyme activity. The Phosphofructo-kinase activity in EDL of the S group was significantly higher in comparison to the other groups.
These results suggested that there is the discrepancy between histochemical proper-ties and biochemical properties in the effects of training on skeletal muscle fibers and that the necessity of histochemical and biochemical analysis.抄録全体を表示PDF形式でダウンロード (811K) -
西保 岳, 姜 熙成, 池上 晴夫1985 年 34 巻 5 号 p. 284-293
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリーThe purpose of this investigation is to evaluate the effects of muscle pump by pedaling exercise on blood circulation and define its properties. Lower body pressurization device equipped with bicycle ergometer was used to provide negative pressure on the lower body of subjects in recumbent position. Seven healthy male collage students volunteered for subjects.
Whole experiment for each subjects was divided into control stage (0 mmHg), -20, -40, and -60 mmHg LBNP (lower body negative pressure) stage. Preceeded by resting period, 25, 75, and 125 W exercise in experiment 1, 50 and 100 W exercise in experiment 2 were loaded using bicycle ergometer with revolution of 60 rpm during each stage. Following parameters were determined: HR, SV, Q, and blood pressure.
The results obtained were as follows;
(1) In resting condition, LBNP caused significant decrease in SV and Q in spite of marked compensatory increase in HR.
(2) These effects of LBNP were cancelled in -20 mmHg or mostly cancelled in -40 and -60 mmHg by pedaling exercise of 50 W or more.
(3) Effect of muscle pump by pedaling exercise is apparent in light exercise such as 25 or 50 W arriving to a plateau with more intensive load.
(4) Muscle pump action by the same exercise condition is more effective under more severe LBNP.
(5) Light exercise in LBNP caused decrease in HR, probably because of pressure reflex initiated by restoration of blood pressure.
These results leed us to a conclusion that light pedaling exercise produces a powerful pumping action nearly enough to compensate the circulatory disturbance by strong LBNP.抄録全体を表示PDF形式でダウンロード (1220K) -
1985 年 34 巻 5 号 p. 294-300
発行日: 1985/10/01
公開日: 2010/09/30
ジャーナル フリーPDF形式でダウンロード (885K)
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