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Related Concept Videos

Exercise and Muscle Performance01:27

Exercise and Muscle Performance

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.
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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 load.
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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.
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Eccentric Axial Loading in a Plane of Symmetry01:16

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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.

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Eccentric exercise training: modalities, applications and perspectives.

Marie-Eve Isner-Horobeti1, Stéphane Pascal Dufour, Philippe Vautravers

  • 1Physical and Rehabilitation Medicine Department, Strasbourg University Rehabilitation Institute-Clémenceau, Strasbourg University, Strasbourg, France. marie-eve.isner@chru-strasbourg.fr

Sports Medicine (Auckland, N.Z.)
|May 10, 2013
PubMed
Summary
This summary is machine-generated.

Eccentric (ECC) exercise offers high muscle force with low energy cost, benefiting athletes and clinical populations. Careful application minimizes damage, enhancing functional capacity and quality of life.

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Rehabilitation Medicine

Background:

  • Eccentric (ECC) exercise is traditionally used for enhancing muscle strength and power in athletes.
  • Growing interest in ECC exercise for rehabilitation due to its unique physiological and mechanical properties.
  • ECC muscle actions can be generated through various modalities with minimal muscle damage or pain.

Purpose of the Study:

  • To review ECC exercise modalities, physiological properties, and applications.
  • To compare ECC and concentric muscle work responses at similar mechanical and metabolic power outputs.
  • To summarize ECC training effects in healthy individuals, athletes, and clinical populations.

Main Methods:

  • Review of literature on ECC exercise modalities (bodyweight, loads, ergometers).
  • Analysis of physiological and mechanical properties of ECC muscle actions.
  • Comparison of ECC and concentric exercise at matched mechanical power and oxygen uptake (VO2).

Main Results:

  • ECC exercise combines high muscle force with low energy cost compared to concentric work.
  • At similar mechanical power, ECC exercise elicits lower metabolic and cardiovascular responses.
  • At similar VO2, ECC exercise induces greater cardiovascular stress, necessitating cautious heart rate interpretation for training load.

Conclusions:

  • ECC exercise is a versatile training modality with broad applications in performance enhancement and clinical rehabilitation.
  • Further research is needed to optimize ECC training strategies by understanding neuromuscular adaptations.
  • ECC exercise holds promise for improving functional capacity and quality of life across diverse populations, including elderly and patients with chronic diseases.