Chicken breast attenuates high-intensity-exercise-induced decrease in rat sarcoplasmic reticulum Ca2+ handling

被引：7

作者：

Mishima, Takaaki ^{[1
]}

Yamada, Takashi ^{[2
]}

Sakamoto, Makoto ^{[3
]}

Sugiyama, Minako ^{[3
]}

Matsunaga, Satoshi ^{[4
]}

Maemura, Hirohiko ^{[5
]}

Shimizu, Muneshige ^{[6
]}

Takahata, Yoshihisa ^{[6
]}

Morimatsu, Fumiki ^{[6
]}

Wada, Masanobu ^{[7
]}

机构：

[1] Hachinohe Jr Coll, Presch Educ Dept, Hachinohe, Aomori 0310844, Japan

[2] Karolinska Inst, Dept Physiol & Pharmacol, Stockholm, Sweden

[3] Hiroshima Univ, Grad Sch Biosphere Sci, Hiroshima 7398521, Japan

[4] Miyazaki Univ, Fac Educ & Culture, Miyazaki 8892192, Japan

[5] Int Pacific Univ, Dept Educ Phys, Okayama 7090863, Japan

[6] Nippon Meat Packers Inc, R & D Ctr, Tsukuba, Ibaraki 3002646, Japan

[7] Hiroshima Univ, Fac Integrated Arts & Sci, Hiroshima 7398521, Japan

来源：

INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM | 2008年 / 18卷 / 04期

关键词：

fatigue; carnosine; anserine; histidine-containing dipeptide; supplementation;

D O I：

10.1123/ijsnem.18.4.399

中图分类号：

R15 [营养卫生、食品卫生]; TS201 [基础科学];

学科分类号：

100403 ;

摘要：

This study was conducted to determine whether dietary chicken-breast extract (CBEX), a rich source of histidine-containing dipeptides, could modify exercise-induced changes in sarcoplasmic reticulum (SR) function. After 5 weeks of dietary CBEX, SR Ca2+-handling ability was examined in the vastus lateralis muscles of rats subjected to high-intensity running for 2.5 min. Dietary CBEX caused an approximately 15% and 45% increase (p < .01) in muscle carnosine and anserine concentrations, respectively. In resting muscles, depressions in SR Ca2+-ATPase activity were evoked by dietary CBEX without concomitant changes in SR Ca2+ uptake and release rates. The data confirm that high-intensity exercise depresses SR Ca2+ handling. In spite of the same run time, SR Ca2+ handling was reduced to a lesser degree in muscles of CBEX-containing-chow-fed rats than in standard-chow-fed rats (p < .05). These results suggest that dietary CBEX might attenuate deteriorations in SR Ca2+-handling ability that occur with high-intensity exercise.

引用

页码：399 / 411

页数：13

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