疲劳诱导的神经肌肉反应在耐力和力量训练的男性之间有所不同.
Rui Wu1,2, Madeleine M Lowery1,2, Giuseppe De Vito3
1School of Electrical & Electronic Engineering, University College Dublin, Dublin, Ireland.
European journal of sport science
|February 25, 2026
概括
训练背景影响神经肌肉疲劳反应. 力量训练的个体表现出肌肉纤维传导速度和中位数频率的改变,而耐力训练的个体经历了扭矩稳定性的减少和疲劳后的增加.
科学领域:
- 神经肌肉生理学 神经肌肉生理学
- 运动科学 运动科学
- 运动医学 运动医学
背景情况:
- 训练背景影响肌肉适应性和耐疲劳能力.
- 了解不同的神经肌肉反应对于优化训练方案至关重要.
研究的目的:
- 为了研究力量训练 (ST) 和耐力训练 (ET) 个体如何对疲劳的同度收缩有不同的反应.
- 为了比较ST和ET组之间的神经肌肉适应和疲劳标记.
主要方法:
- 11名ST和11名ET男性进行了最大自发的同度膝盖延伸和次最大疲劳收缩.
- 横向巨大的电肌图 (EMG) 被记录下来,以分析根平均平方 (RMS) 幅度,中位数频率 (MDF) 和肌肉纤维传导速度 (MFCV).
- 在疲劳之前和之后评估扭矩稳定性和生理震.
主要成果:
- 两组都表现出相似的时间到失败和最大的自愿性同度膝盖延伸缩减.
- 在疲劳后,ST个体显示EMG MDF降低,而ET个体显示扭矩稳定性降低和生理震增加.
- 在疲劳期间,ST个体显示MFCV和MDF下降,而ET个体显示这些参数没有显著变化.
结论:
- 在ST和ET组中,疲劳同样降低了最大力量.
- 然而,疲劳对神经肌肉策略的影响有所不同,这表明肌肉纤维组成和训练背景之间的适应有所不同.
- 这些发现强调了在评估神经肌肉疲劳时考虑训练史的重要性.
相关概念视频
Exercise and Muscle Performance
2.8K
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...
2.8K
Muscle Recovery and Fatigue
4.5K
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...
4.5K
Classification of Skeletal Muscle Fibers
59.7K
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
59.7K
Types of Skeletal Muscle Fibers
4.8K
Skeletal muscles comprise various fibers, each with distinct characteristics and roles in movement and stability. They are mainly categorized into three types — fast-twitch, slow-twitch, and intermediate.
Fast-twitch fibers
Fast-twitch fibers, or Type II fibers, are designed for quick, powerful bursts of speed and strength. They reach peak tension within approximately 0.01 seconds following stimulation. Characterized by a large diameter and densely packed myofibrils, these fibers contain...
Fast-twitch fibers
Fast-twitch fibers, or Type II fibers, are designed for quick, powerful bursts of speed and strength. They reach peak tension within approximately 0.01 seconds following stimulation. Characterized by a large diameter and densely packed myofibrils, these fibers contain...
4.8K
Fatigue Strength of Concrete
626
Fatigue, in the context of materials science and engineering, refers to the weakening or failure of a material caused by repeatedly applied loads, even if these loads are below the strength limit of the material. Fatigue strength in concrete is a critical property that influences its durability and longevity. Concrete can fail in two ways due to fatigue. Static fatigue or creep rupture occurs under a constant load or one that increases slowly. The other failure mode is due to cyclical or...
626
Energy Supply for Muscle Contraction
6.0K
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,...
6.0K


