支鏈胺基酸補充對參與馬拉松賽期間運動員的丙二醛影響

The Effects of Branched-Chain Amino Acids Supplementation on Malondialdehyde Values in Marathon Athletes

李建明(Jane-Minge Lee) ； 洪麗玲(Li-Ling Hung) ； 王淑華(Shu-Hwa Wang)

《食品營養研究期刊》 1期 (2009/12) Pp. 1-9

摘要

This study investigated the effects of branched-chain amino acids (BCAA) supplementation on malondialdehyde (MDA) values in marathon athletes. This double-blind, counter-balanced study, twenty-one marathon athletes of the ING Taipei International Marathon were randomly divided into two groups: experimental group (n=11,12 gm BCAA/day; in capsules, leucine 54%, isoleucine 19%, valine 27%); control group (n 10,12 g glucose placebo /day; in capsules). Participants maintained their regular dietary intake. Measured before and after the 14 days of supplementation, of either group was not affected by dietary intake. Blood samples of each athlete were collected 12, 1 hours before (Pre), and immediately after the race (Post), Enzyme-linked immunoassay assay method (ELISA) were used for analyzing malondialdehyde (MDA). The data was analysis by analysis of covariance (ANCOVA). The results of the study showed test of homogeneity within regression coefficient (F =2.582; p=.126＞.05) and homogeneity of variance test (F=3.123; p=.093＞.05) were not significantly different. Analysis of covariance (ANCOVA) was conducted, The data were not significantly different (F=.309; p=.58 5＞.05). The conclusion of the BCAA supplements (experimental group) would be not significantly affected malondialdehyde (MDA) concentration after marathon race. Thereby, increased exercise strength and amount would be changed sensitivity of malondialdehyde. So, high level of blood glutamine concentration may reduce the BCAA metabolism, and decrease the proteolysis during the recovery period.

關鍵字

馬拉松賽 ； 支鏈胺基酸 ； 丙二醛

並列摘要

This study investigated the effects of branched-chain amino acids (BCAA) supplementation on malondialdehyde (MDA) values in marathon athletes. This double-blind, counter-balanced study, twenty-one marathon athletes of the ING Taipei International Marathon were randomly divided into two groups: experimental group (n=11,12 gm BCAA/day; in capsules, leucine 54%, isoleucine 19%, valine 27%); control group (n 10,12 g glucose placebo /day; in capsules). Participants maintained their regular dietary intake. Measured before and after the 14 days of supplementation, of either group was not affected by dietary intake. Blood samples of each athlete were collected 12, 1 hours before (Pre), and immediately after the race (Post), Enzyme-linked immunoassay assay method (ELISA) were used for analyzing malondialdehyde (MDA). The data was analysis by analysis of covariance (ANCOVA). The results of the study showed test of homogeneity within regression coefficient (F =2.582; p=.126＞.05) and homogeneity of variance test (F=3.123; p=.093＞.05) were not significantly different. Analysis of covariance (ANCOVA) was conducted, The data were not significantly different (F=.309; p=.58 5＞.05). The conclusion of the BCAA supplements (experimental group) would be not significantly affected malondialdehyde (MDA) concentration after marathon race. Thereby, increased exercise strength and amount would be changed sensitivity of malondialdehyde. So, high level of blood glutamine concentration may reduce the BCAA metabolism, and decrease the proteolysis during the recovery period.

並列關鍵字

marathon race ； branched-chain amino acids (BCAA) ； malondialdehyde (MDA)