| Hormonal responses to resistance exercise after ingestion of carnosine and anserine. | |
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MedLine Citation:
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PMID: 20224451 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Goto, K, Maemura, H, Takamatsu, K, and Ishii, N. Hormonal responses to resistance exercise after ingestion of carnosine and anserine. J Strength Cond Res 25(2): 398-405, 2011-Intramuscular carnosine buffers protons (H) in skeletal muscle. We examined the effects of supplementation with chicken breast meat extract (CBEX) containing carnosine and anserine on hormonal responses to resistance exercise. Twenty-two men were assigned to a CBEX drink group (CBEX containing total 2 g of carnosine and anserine) (n = 14) or a placebo drink group (n = 8). The subjects ingested the prescribed drink (100 mL) twice daily for 30 days without physical training. Before and after the supplementation period, the subjects completed 5 sets of bilateral knee extension exercises (with a 90-s rest between sets). The magnitude of the increase in exercise-induced free testosterone did not change significantly after supplementation in either group. The blood lactate response to exercise was attenuated after supplementation in both groups (p < 0.05). In the CBEX group, the plasma epinephrine and norepinephrine concentrations after exercise were significantly lower after supplementation (p < 0.05). The serum growth hormone response to exercise was also reduced in the CBEX group after supplementation (delta value: 5.4 ± 1.9 ng/mL [pre] vs. 1.6 ± 0.5 ng/mL [post], p = 0.05). No significant differences in exercise-induced strength reduction (fatigue index) were observed in the 2 groups after supplementation. These results suggest that short-term supplementation with CBEX attenuates the exercise-induced epinephrine, norepinephrine, and growth hormone responses. |
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Authors:
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Kazushige Goto; Hirohiko Maemura; Kaoru Takamatsu; Naokata Ishii |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of strength and conditioning research / National Strength & Conditioning Association Volume: 25 ISSN: 1533-4287 ISO Abbreviation: J Strength Cond Res Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9415084 Medline TA: J Strength Cond Res Country: United States |
Other Details:
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Languages: eng Pagination: 398-405 Citation Subset: IM |
Affiliation:
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1Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan; 2Faculty of Health and Sport Sciences, International Pacific University, Okayama, Okayama, Japan; 3R & D Center, Nippon Meat Packers, Inc., Tsukuba, Ibaraki, Japan; 4Faculty of Health and Sport Sciences, Ryutsu keizai University, Ryugasaki, Ibaraki, Japan; and 5Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Komaba, Tokyo, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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