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  2. Concentric objects - Wikipedia

    en.wikipedia.org/wiki/Concentric_objects

    The region of the plane between two concentric circles is an annulus, and analogously the region of space between two concentric spheres is a spherical shell. [6] For a given point c in the plane, the set of all circles having c as their center forms a pencil of circles. Each two circles in the pencil are concentric, and have different radii.

  3. Muscle contraction - Wikipedia

    en.wikipedia.org/wiki/Muscle_contraction

    In concentric contraction, muscle tension is sufficient to overcome the load, and the muscle shortens as it contracts. [8] This occurs when the force generated by the muscle exceeds the load opposing its contraction. During a concentric contraction, a muscle is stimulated to contract according to the sliding filament theory. This occurs ...

  4. Isotonic contraction - Wikipedia

    en.wikipedia.org/wiki/Isotonic_contraction

    A near isotonic contraction is known as Auxotonic contraction. There are two types of isotonic contractions: (1) concentric and (2) eccentric. In a concentric contraction, the muscle tension rises to meet the resistance, then remains the same as the muscle shortens.

  5. Hill's muscle model - Wikipedia

    en.wikipedia.org/wiki/Hill's_muscle_model

    During isometric contractions the series elastic component is under tension and therefore is stretched a finite amount. Because the overall length of the muscle is kept constant, the stretching of the series element can only occur if there is an equal shortening of the contractile element itself.

  6. Reciprocal innervation - Wikipedia

    en.wikipedia.org/wiki/Reciprocal_innervation

    Reciprocal innervation describes skeletal muscles as existing in antagonistic pairs, with contraction of one muscle producing forces opposite to those generated by contraction of the other. For example, in the human arm, the triceps acts to extend the lower arm outward while the biceps acts to flex the lower arm inward. To reach optimum ...

  7. Understanding Eccentric vs. Concentric Movement Can ... - AOL

    www.aol.com/understanding-eccentric-vs...

    Eccentric, concentric, and isometric phases are all distinct parts of most exercises you do in your workouts. Here's what they mean and how to use them. Eccentric, concentric, and isometric phases ...

  8. Why Every Cyclist Should Be Doing Eccentric Exercises - AOL

    www.aol.com/lifestyle/why-every-cyclist-doing...

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  9. Talk:Muscle contraction - Wikipedia

    en.wikipedia.org/wiki/Talk:Muscle_contraction

    Newton's third law requires that the muscle tension and its load, possibly including inertial loads, be equal. It is the muscle ability to generate force while isometric that exceeds the load in a concentric contraction and is exceeded by it in an eccentric contraction. I am new here so reluctant to just change it. Advice appreciated.