在短时间的训练区块期间,解开男性拳击手肌肉损伤和能量之间的动态相互作用
Zbigniew Obmiński1, Blair T Crewther1,2, Christian J Cook2,3
1Institute of Sport - National Research Institute, Warsaw, Poland.
Biology of sport
|January 8, 2024
概括
这项研究探讨了训练期间拳击手的日常肌肉损伤和能量生物标志物变化. 研究结果显示,肌酸激酶,疼痛,葡萄糖和尿素之间的变化和相互联系受训练时间的影响.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 生物化学 生物化学
背景情况:
- 拳击训练会导致肌肉损伤,并改变能量代谢.
- 了解肌肉损伤和能量生物标志物之间的动态关系对于优化拳击手训练和恢复至关重要.
- 之前的研究没有在正常培训期间动态地检查这些因素.
研究的目的:
- 在训练区块期间调查男性拳击手的肌肉损伤和能量生物标志物之间的日常,滞后和相互影响.
- 探索肌酸激酶 (CK),肌肉疼痛,尿素和葡萄糖水平之间的动态相互作用.
- 通过网络分析分析时间关系.
主要方法:
- 13名业余拳击手在16天的季前训练中进行了监测.
- 每天的评估包括血CK,尿素,葡萄糖和自我报告的肌肉疼痛.
- 多级向量自回归被用来估计人内同时代和时间网络.
主要成果:
- 肌肉疼痛,CK,尿素和葡萄糖在训练期间表现出不同的轨迹.
- 同时发现CK和疼痛 (r=0.44) 之间存在正相关性.
- 时间分析显示了疼痛,CK,葡萄糖 (r=-0.28) 和尿素 (r=0.22) 之间的联系,其中CK与葡萄糖的关系交换了.
结论:
- 肌肉损伤和能量生物标志物的每日波动在拳击手中非常可变.
- 在CK,疼痛,尿素和葡萄糖之间存在相互关系,但取决于时间顺序.
- 复杂的相互作用突出了在训练和恢复过程中能量生物标记物的性.
相关概念视频
01:24Muscle Recovery and Fatigue
2.1K
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...
2.1K
01:27Exercise and Muscle Performance
1.4K
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...
1.4K
01:25Energy Supply for Muscle Contraction
3.1K
Skeletal muscle fibers have the unique ability to switch between rest and contraction states, using different sources of ATP for energy. The contraction cycle and Ca2+ transport back into the sarcoplasmic reticulum for relaxation require significant ATP. However, the ATP reserves in muscle fibers are limited and can only sustain contractions for a few seconds. Additional ATP production becomes necessary for prolonged contractions. As a result, muscle fibers generate ATP through various sources,...
3.1K
01:22Muscle Stimulation Frequency
2.2K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
2.2K
01:20Exercise and Cardiovascular Response
815
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...
815
01:20Motor Unit Stimulation
1.6K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.6K