泡滚动对腿筋硬度的影响,在受损和无损的肌肉状态下
Rok Vatovec1, Anja Grandovec1, Žiga Kozinc1
1University of Primorska, Faculty of Health Sciences, Izola, Slovenia.
Frontiers in physiology
|April 23, 2024
概括
泡滚动 (FR) 并没有显著改变筋肌肉硬度或运动诱导肌肉损伤 (EIMD) 后的恢复标记. 短期FR似乎在改善EIMD恢复期间肌肉硬性方面发挥了有限的作用.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 物理治疗 物理治疗
背景情况:
- 肌肉硬是运动表现和恢复的关键因素.
- 运动引起的肌肉损伤 (EIMD) 可以导致长时间的肌肉硬和疼痛.
- 泡滚动 (FR) 是一种流行的自我肌肌释放技术,用于恢复.
研究的目的:
- 为了研究泡滚动对腿筋肌肉硬性的影响,无论是在未受损伤的肌肉损伤状态还是运动引起的肌肉损伤状态.
- 通过剪波超声弹性学来评估肌肉剪切模量变化.
- 评估FR对肌肉疼痛,运动范围和EIMD后被动电阻扭矩的影响.
主要方法:
- 14名健康成年人接受了参与者内部设计,在一条腿和对照腿上进行了2分钟的FR干预.
- 使用最大偏心膝盖延伸和北欧腿筋运动来诱导EIMD.
- 肌肉度 (剪切模量),疼痛,运动范围和被动电阻扭矩在基线和EIMD后1,24和48小时被测量.
主要成果:
- 在没有损坏的状态或EIMD状态下,在泡滚动和控制腿之间没有观察到切割模量显著的差异.
- 在EIMD后,双腿骨和半骨剪切模量显著增加.
- 与对照腿相比,泡滚动没有显著影响肌肉疼痛,运动范围或被动电阻扭矩.
结论:
- 短时间的泡滚动 (2分钟) 在运动引起的肌肉损伤的恢复期间对改变腿筋肌肉硬性有有限的影响.
- 这些发现表明,中央机制,而不是直接的机械修改,可能在EIMD后的肌肉恢复中发挥更重要的作用.
- 需要进一步的研究来探索泡滚动干预措施的最佳持续时间和适用于不同肌肉状态和恢复结果的应用.
相关概念视频
01:22Muscle Stimulation Frequency
2.1K
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...
2.1K
01:21Satellite Stem Cells and Muscular Dystrophy
2.0K
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
2.0K
01:29Relaxation of Skeletal Muscles
3.2K
The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open....
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open....
3.2K