Effect of dietary protein intakes on recovery from the central fatigue postexercise

膳食蛋白质摄入量对运动后中枢性疲劳恢复的影响

• 批准号: 21500661
• 负责人: KAWANO Yukari
• 金额: $ 2.83万
• 依托单位: Tokyo University of Agriculture
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21500661/
• 关键词: 栄養指導; スポーツ栄養学; たんぱく質; 運動; 疲労; 心拍数; 心拍変動; 高たんぱく質; 一過性運動; 反応認知課題; 食事; 血糖値; 血中アミノ酸; 男子学生; 身体活動; 自律神経活動; 食事組成; 自転車エルゴメーター; 血液性状; レジスタンス運動; 卵白たんぱく質; 大豆たんぱく質; 血中乳酸; 血中コルチゾール

The aim of this study was to evaluate the effect of pre-exercise protein intakes 30min before the exercise on various indexes of fatigue in the recovery of a single bout of cycle ergometer exercise(70% VO_2peak, 30 min), such as a heart rate(HR) and R-R intervals, autonomic activity, blood lactate concentrations, ratio of tryptophan to branched chain amino acids(Trp/BCAA), and subjective fatigue. In addition, here we tested a hypothesis that central fatigue would be increased after strenuous exercise, and correlated with increased ratio of Trp/BCAA.As a result, the HR increased, R-R intervals significantly decreased during the exercise, and then those values returned to be pre-exercised levels in the recovery period. It was not clear in our present study how dietary protein intakes affect the post-exercised variables of HR and autonomic activity. Further studies are needed to clarify the effect of different levels of dietary protein on the HR variables.Levels of blood lactate and subjective fatigue increased significantly just after the exercise regardless of protein intakes levels. Both levels of lactate and fatigue decreased significantly at 30min after the exercise. These observations suggested that both peripheral and central fatigue increased by the exercise and changes were transient. On the other hand, the ratio of Trp/BCAA was unchanged in lower protein intake group during this experimental period(7% of protein energy ratio). On the other hand, the ratio of Trp/BCAA in a higher protein intake group(54% of protein energy ratio) significantly decreased just after the exercise and remained a low level until 60 min after the exercise.These observations suggested that changes in the subjective fatigue did not necessarily correspond with the changes in the serum Trp/BCAA levels, and it seems difficult to account for the central fatigue theory by the changes in serum Trp/BCAA levels.

本研究旨在评价运动前30 min蛋白质摄入量对单次踏车运动（70%VO_2peak，30 min）恢复期疲劳指标的影响，如心率（HR）、R-R间期、自主活动、血乳酸浓度、色氨酸/支链氨基酸比值（Trp/BCAA）和主观疲劳。此外，我们还验证了剧烈运动后中枢疲劳程度增加的假设，并与Trp/BCAA比值增加相关，结果运动时心率增加，R-R间期显著缩短，恢复期恢复到运动前水平。在我们目前的研究中，尚不清楚膳食蛋白质摄入量如何影响心率和自主活动的运动后变量。需要进一步的研究来阐明不同水平的膳食蛋白质对HR变量的影响。无论蛋白质摄入水平如何，运动后血乳酸水平和主观疲劳都显着增加。运动后30 min乳酸水平和疲劳水平均显著降低。这些观察结果表明，外周和中枢疲劳增加的运动和变化是短暂的。另一方面，在本实验期间，低蛋白质摄入组中Trp/BCAA的比例没有变化（蛋白质能量比的7%）。另一方面，高蛋白质摄入组的Trp/BCAA比值（54%蛋白质能量比）在运动后即刻显著下降，运动后60 min仍维持较低水平，提示主观疲劳的变化与血清Trp/BCAA水平的变化不一定一致，用血清Trp/BCAA水平的变化来解释中枢疲劳理论似乎是困难的。

项目成果

シンポジウム:食とスポーツ -生涯にわたる健康の獲得と食育-

研讨会：食品与运动——实现终身健康和饮食教育——

• 发表时间: 2009
• 作者: 長谷川裕子;ほか11名(川野因、12番目);児玉俊明;日田安寿美;川野因
• 通讯作者: 川野因

スポーツ選手の食生活・実態把握のために

了解运动员饮食习惯及实际情况

• 发表时间: 2010
• 期刊: 日本食品機械研究会誌 30
• 作者: 菅田佳奈子;竹元裕明;浅田善久;小林義典;川野因
• 通讯作者: 川野因

運動前の摂取たんぱく質の違いが回復期の尿中3-メチルヒスチジン排泄に及ぼす影響

运动前蛋白质摄入量差异对恢复期尿3-甲基组氨酸排泄的影响

• 发表时间: 2010
• 作者: 長谷川祐子;ほか11名
• 通讯作者: ほか11名

Significance of checklists for improving the quality of studies of health enhancement interventions : evidence grading and various study designs of epidemiological and clinical studies.

检查表对于提高健康促进干预研究质量的意义：流行病学和临床研究的证据分级和各种研究设计。

• 发表时间: 2011
• 期刊: IJSSPE
• 作者: H Kamioka;et.al.(6)
• 通讯作者: et.al.(6)

Relationship of dietary intake and lifestyle factors to health-related quality of life in the community-dwelling elderly.

社区老年人膳食摄入和生活方式因素与健康相关生活质量的关系。

• 发表时间: 2010
• 期刊: J Nutr Sci.Vitaminol.
• 作者: K.Mori;et.al.(10)
• 通讯作者: et.al.(10)