EFFECTS OF CHO ON PERCEIVED EXERTION AND BLOOD LACTATE RESPONSE TO EXERCIS

CHO 对运动感知和血乳酸反应的影响

• 批准号: 7951509
• 负责人: Arthur Weltman
• 金额: $ 0.49万
• 依托单位: UNIVERSITY OF VIRGINIA
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-03-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7951509
• 关键词: Affect; Blood; Blood specimen; Carbohydrates; Clinical Research; Computer Retrieval of Information on Scientific Projects Database; Exercise; Exertion; Funding; Grant; Human Resources; Ingestion; Institution; Oxygen Consumption; Performance; Physiological; Research; Research Personnel; Resources; Source; Supplementation; Techniques; Training; United States National Institutes of Health; Workload; base; response

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Exercise prescription techniques are currently based on assessment of maximal oxygen consumption and the blood lactate response to exercise. Because of the need for blood samples and trained personnel for lactate assessment, ratings of perceived exertion (RPE) have been used as an exercise prescription technique as RPE have been shown to accurately produce specific blood lactate concentrations. The lactate threshold (LT) is defined as the highest work load attained prior to blood lactate accumulation during exercise. Training at an RPE corresponding to a blood lactate concentration above the LT results in improvements in physiological variables associated with performance. Performance improvements have also been observed while ingesting carbohydrate before and during exercise. As little is known regarding the effects of carbohydrate supplementation on the blood lactate-RPE relationship, the present study will evaluate whether carbohydrate supplementation affects this relationship. We hypothesize that the blood lactate-RPE relationship will be altered with carbohydrate ingestion, thus affecting the use of RPE for producing a given blood lactate during exercise.

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 运动处方技术目前是基于对运动的最大耗氧量和血乳酸反应的评估。由于需要血液样本和训练有素的人员进行乳酸评估，感知劳累评分(RPE)已被用作一种运动处方技术，因为RPE已被证明可以准确地产生特定的血乳酸浓度。乳酸阈值(LT)被定义为在运动过程中血乳酸积累之前达到的最高工作负荷。在与血乳酸浓度高于LT的RPE相对应的RPE中进行训练会导致与表现相关的生理变量的改善。在运动前和运动期间摄入碳水化合物也能提高运动成绩。由于对碳水化合物补充对血乳酸-RPE关系的影响知之甚少，本研究将评估碳水化合物补充是否会影响这种关系。我们假设，摄入碳水化合物会改变血乳酸-RPE的关系，从而影响运动期间利用RPE产生特定的血乳酸。