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  2. Muscle contraction - Wikipedia

    en.wikipedia.org/wiki/Muscle_contraction

    Depiction of smooth muscle contraction. Muscle contraction is the activation of tension-generating sites within muscle cells. [1] [2] In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as when holding something heavy in the same position. [1]

  3. Isotonic contraction - Wikipedia

    en.wikipedia.org/wiki/Isotonic_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. In eccentric, the muscle lengthens due to the resistance being greater than the force the muscle is producing. [citation needed]

  4. 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 ...

  5. Muscle cell - Wikipedia

    en.wikipedia.org/wiki/Muscle_cell

    There are four main types of muscle contraction: isometric, isotonic, eccentric and concentric. [29] Isometric contractions are skeletal muscle contractions that do not cause movement of the muscle. and isotonic contractions are skeletal muscle contractions that do cause movement. Eccentric contraction is when a muscle moves under a load ...

  6. Isometric exercise - Wikipedia

    en.wikipedia.org/wiki/Isometric_exercise

    An isometric exercise is an exercise involving the static contraction of a muscle without any visible movement in the angle of the joint. The term "isometric" combines the Greek words isos (equal) and -metria (measuring), meaning that in these exercises the length of the muscle and the angle of the joint do not change, though contraction ...

  7. Anatomical terms of muscle - Wikipedia

    en.wikipedia.org/wiki/Anatomical_terms_of_muscle

    For example, the triceps brachii contracts, producing a shortening (concentric) contraction, during the up phase of a push-up (elbow extension). During the down phase of a push-up, the same triceps brachii actively controls elbow flexion while producing a lengthening (eccentric) contraction. It is still the agonist, because while resisting ...

  8. Work loop - Wikipedia

    en.wikipedia.org/wiki/Work_Loop

    This technique is primarily used for cyclical contractions such as cockroach walking., [1] the rhythmic flapping of bird wings [2] or the beating of heart ventricular muscle. [ 3 ] To simulate the rhythmic shortening and lengthening of a muscle (e.g. while moving a limb) and natural kinematics, a servo motor oscillates the muscle at a given ...

  9. Muscle fatigue - Wikipedia

    en.wikipedia.org/wiki/Muscle_fatigue

    In research studies, participants were found to show reduced voluntary force production in fatigued muscles (measured with concentric, eccentric, and isometric contractions), vertical jump heights, other field tests of lower body power, reduced throwing velocities, reduced kicking power and velocity, less accuracy in throwing and shooting ...