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関連する概念動画

Eccentric Loading01:16

Eccentric Loading

894
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
894
Exercise and Muscle Performance01:27

Exercise and Muscle Performance

2.3K
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...
2.3K
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

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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...
4.3K
Isotonic and Isometric Muscle Contractions01:22

Isotonic and Isometric Muscle Contractions

6.6K
Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
Isotonic contractions
Isotonic contractions occur when a muscle changes length while...
6.6K
Motor Unit Stimulation01:20

Motor Unit Stimulation

3.5K
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...
3.5K
Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

540
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
540

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関連する実験動画

Updated: Jan 14, 2026

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
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フライホイール運動は偏心性過負荷トレーニングを提供するか？

Darjan Spudić1, Kazunori Nosaka2

  • 1Faculty of Sport, University of Ljubljana, Gortanova 22, Ljubljana, 1000, Slovenia. darjan.spudic@fsp.uni-lj.si.

Sports medicine - open
|January 13, 2026
PubMed
まとめ
この要約は機械生成です。

フライホイール（FW）デバイスは偏心性過負荷トレーニングを提供する可能性があるが、常に達成できるとは限らない。効果的なFW抵抗運動のためには、同心相よりも偏心相で高い機械的負荷を達成することが重要であり、適応を理解するためにも重要である。

キーワード:
同心性収縮等慣性負荷伸張性収縮抵抗運動スクワット運動ヨーヨー運動

さらに関連する動画

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
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Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
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関連する実験動画

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07:30

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Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

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Isometric and Eccentric Force Generation Assessment of Skeletal Muscles Isolated from Murine Models of Muscular Dystrophies
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科学分野:

  • 生体力学
  • 運動生理学
  • スポーツ科学

背景:

  • トレーニングと研究における偏心性抵抗運動への関心の高まり。
  • 従来の機器の限界が偏心性抵抗運動の実装を妨げている。
  • フライホイール（FW）デバイスは、偏心性トレーニングの実用的な代替手段を提供する。

研究 の 目的:

  • FWデバイスを用いた偏心性過負荷に影響を与える機械的および生理学的要因を要約すること。
  • 同心相への依存による偏心性負荷の定量化の限界について論じること。
  • FW抵抗運動のための実践的な解決策と研究の改善を探求すること。

主な方法:

  • FWデバイスを支配する機械的および生理学的原理のレビュー。
  • FW運動における同心相と偏心相の関係の分析。
  • 偏心性負荷の定量化の課題と潜在的な解決策についての議論。

主要な成果:

  • FWデバイスは本質的に偏心性過負荷を保証するものではなく、偏心相でより高い機械的量を達成するかどうかに依存する。
  • 偏心性負荷は先行する同心相によって制約されるため、正確な負荷の定量化は困難である。
  • 神経筋適応におけるその役割を検証するためには、達成された偏心性過負荷の確認が必要である。

結論:

  • FW抵抗運動は、偏心性機械的量が同心性量を上回る場合にのみ偏心性過負荷を達成する。
  • FWトレーニングおよびテスト中に偏心性過負荷が達成されたかどうかを確認することが不可欠である。
  • FW誘発性神経筋適応における偏心性過負荷の特定の役割を明確にするためには、さらなる研究が必要である。