碳酸和时间到耗尽的循环性能:回顾性分析探索期望的调解作用
William H Gurton1,2, Guilherme G Matta1, Lewis Anthony Gough3
1School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury, UK.
Sports medicine - open
|July 31, 2023
概括
摄入二碳酸 (NaHCO3) 可以提高骑自行车的性能. 与囊相比,在溶液中服用时,更高的期望和更大的血液二碳酸盐下降,调解了这些性能改善.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 营养补充剂 营养补充剂
背景情况:
- 众所周知,摄入二碳酸 (NaHCO3) 可以改善循环时间到耗尽 (TTE).
- 目前尚不清楚NaHCO3人体生理效应背后的心理生理机制.
- 了解这些机制对于优化其在体育中的使用至关重要.
研究的目的:
- 调查积极的期望和血液二碳酸盐的下降是否会调解NaHCO3对TTE循环表现的人体效应.
- 为了比较NaHCO3在溶液和囊中的作用.
- 探索预期和生理反应在提高表现中的作用.
主要方法:
- 这是一项随机,交叉,双盲,安慰剂控制的研究,涉及12名骑自行车的人.
- 参与者摄入了NaHCO3或安慰剂 (化或玉米粉) 溶液或囊.
- 进行了时间到耗尽 (TTE) 循环测试,测量了运动前预期和血液酸平衡.
主要成果:
- 与安慰剂相比,NaHCO3的溶液和囊形式都显著改善了TTE.
- 溶液中的NaHCO3导致了更高的性能预期和比囊中的血液二碳酸盐更大的下降.
- 调解分析表明,当NaHCO3在溶液中给予时,预期和二碳酸盐下降与性能改善有关.
结论:
- 摄入二碳酸,特别是溶液,可以提高循环TTE的性能.
- 积极的期望和增加的细胞外缓冲有助于提高性能.
- 输送方法 (溶液与囊) 影响心理生理反应和表现结果.
更多相关视频
08:05A Prediction Error-driven Retrieval Procedure for Destabilizing and Rewriting Maladaptive Reward Memories in Hazardous Drinkers
Published on: January 5, 2018
9.8K
09:24A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
8.9K
相关概念视频
01:22Bicarbonate-Carbonic Acid Buffer
1.6K
The carbonic acid-bicarbonate buffer system is critical for maintaining the body's pH balance. It operates on the equilibrium:
1.6K
01:18Titration of Polyprotic Base with a Strong Acid
830
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
830
01:24Muscle Recovery and Fatigue
2.2K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
2.2K
01:17Hepatic Drug Excretion: Enterohepatic Cycling
1.6K
Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
1.6K