在不同运动强度期间全身基质代谢,特别强调受训受试者的血液蛋白质变化-试点研究
Wondyefraw Mekonen1, Günther Schwaberger2, Manfred Lamprecht3,4
1Department of Physiology, College of Health Sciences, Tikur-Anbessa Medical School, Addis Ababa University, P.O. Box 5657, Addis Ababa 1165, Ethiopia.
Journal of functional morphology and kinesiology
|July 25, 2023
概括
运动会根据强度和持续时间对蛋白质代谢产生不同的影响. 长时间,适度的运动显著增加了蛋白质分解和氨基酸的能量利用,这表明运动后的饮食谨慎.
科学领域:
- 运动生理学 运动生理学
- 人类的新陈代谢.
- 生物化学 生物化学
背景情况:
- 蛋白质新陈代谢对运动的反应比碳水化合物和脂肪新陈代谢了解得更少.
- 关于不同强度和持续时间的运动如何影响蛋白质代谢的研究有限.
研究的目的:
- 研究不同强度和持续时间的运动对血液蛋白质标记物的影响.
- 在运动期间将这些蛋白质变化与碳水化合物和脂肪代谢联系起来.
主要方法:
- 六名受过训练的受试者在75% (CE75) 和50% VO2max (CE50) 时进行了最大的增量运动 (IE100) 和次最大的连续运动 (CE).
- 血液样本在休息时,运动结束时和恢复后被分析为血液尿素 (BUN),血氨基酸 (AA),葡萄糖,乳酸,FFA和糖醇.
主要成果:
- 最大运动 (IE100) 增加了乳酸和碳水化合物氧化. 长时间的中度运动 (CE50) 显著增加了BUN,FFA,糖醇和脂肪氧化.
- 在CE50期间,自由氨基酸池减少了,这表明氨基酸吸收用于氧化和葡萄糖生成.
- 蛋白质分解 (BUN) 在低至中等强度运动 (CE50) 中作为燃料来源.
结论:
- 蛋白质代谢,特别是蛋白质溶解,在长时间的中等强度运动中,有助于产生能量.
- 长时间运动期间氨基酸的吸收突出显示了它们在代谢支持和恢复过程中的作用.
- 由于蛋白质利用率增加,长时间运动后应仔细考虑饮食中的蛋白质摄入量.
相关概念视频
Exercise and Cardiovascular Response
866
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
866
Exercise and Muscle Performance
1.5K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.5K
Metabolic States of the Body: Fasting and Starvation
1.5K
During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
1.5K
Metabolic States of the Body: The Postabsorptive State
374
The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
374
Metabolic States of the Body: The Absorptive State
723
During the absorptive state, which lasts approximately four hours after a meal, the body absorbs nutrients from the gastrointestinal tract. The carbohydrates, proteins, and lipids we consume are broken down into monosaccharides, amino acids, and free fatty acids for absorption. While carbohydrates and proteins are absorbed as-is, lipids are absorbed in their broken-down forms and then re-esterified into triglycerides within enterocytes before being packaged into chylomicrons. These absorbed...
723
Overview of Protein Metabolism
1.3K
Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
1.3K


