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ID 25996
本文ファイル
別タイトル
EFFECTS OF EXHAUSTIVE EXERCISE ON SARCOPLASMIC RETICULUM ATPase : COMPARISON OF SHORT- AND LONG-TERM EXERCISE
著者
稲嶋 修一郎
安田 俊広
稲水 惇
勝田 茂
キーワード
muscle fatigue
skeletal muscle
Ca^<2+>-ATPase
sarcoplasmic reticulum
exercise
NDC
医学
抄録(英)
Effects of short-term, high-intensity and long-term, moderate-intensity exercise on biochemically assessed asrcoplasmic reticulum(SR)ATPase protein were analyzed in muscle homogenates of the rat after treadmill runs to exhaustion(avg.time to exhaustion 2min 48sec and 1h 29min, respectively). The exercise-induced changes in SR Ca^<2+>-ATPase activity were muscle type-specific. After short-term exercise, a decrease in the activity occurred in the soleus muscle and the super-ficial region of the vastus lateralis muscle whereas long-term exercise depressed the rate of ATP hydrolysis in the soleus muscle and the deep region of the vastus lateralis muscle. The concentration of fluorescein isothiocyanate, a competitor at the ATP-binding site, for 50% inhibition of SR Ca^<2+>-ATPase activity fluctuated only in the soleus muscle subjected to short-term exercise;it was increased by 31%. This change occurring in the soleus muscle would elevate SR Ca^<2+>-ATPase activity at a given concentration of ATP. The results presented here suggest that acute short-term exercise to exhaustion may exert a remarkably inhibitory factor on SR Ca^<2+>-ATPase protein of slow-twitch muscle, which can overcome the positive effect probably arising from the phosphorylation of the phospholamban.
掲載誌名
体力科学 : Japanese Journal of Physical Fitness and Sports Medicine
47巻
1号
開始ページ
63
終了ページ
71
出版年月日
1998-02-01
出版者
日本体力医学会
ISSN
0039-906X
NCID
言語
日本語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
日本体力医学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
関連情報URL
部局名
総合科学研究科