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  2. Metabolic myopathy - Wikipedia

    en.wikipedia.org/wiki/Metabolic_myopathy

    Abnormal muscle fatigue (premature fatigue and/or inability to get into second wind), muscle pain (myalgia), cramping or muscle stiffness during and/or after exercise, [citation needed] Shortness of breath , or rapid breathing , or heavy breathing , or both (exercise hyperventilation) [citation needed]

  3. Muscle fatigue - Wikipedia

    en.wikipedia.org/wiki/Muscle_fatigue

    Muscle fatigue is not the same as muscle weakness, though weakness is an initial symptom. Despite a normal amount of force being generated at the start of activity, once muscle fatigue has set in and progressively worsens, if the individual persists in the exercise they will eventually lose their hand grip, or become unable to lift or push with ...

  4. Sliding filament theory - Wikipedia

    en.wikipedia.org/wiki/Sliding_filament_theory

    The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement. [1] According to the sliding filament theory, the myosin ( thick filaments ) of muscle fibers slide past the actin ( thin filaments ) during muscle contraction, while the two groups of filaments ...

  5. Neuromechanics - Wikipedia

    en.wikipedia.org/wiki/Neuromechanics

    A muscle synergy is composed of agonist and synergistic muscles. An agonist muscle is a muscle that contracts individually, and it can cause a cascade of motion in neighboring muscles. Synergistic muscles aid the agonist muscles in motor control tasks, but they act against excess motion that the agonists may create.

  6. Muscle weakness - Wikipedia

    en.wikipedia.org/wiki/Muscle_weakness

    It was once believed that lactic acid build-up was the cause of muscle fatigue. [14] The assumption was lactic acid had a "pickling" effect on muscles, inhibiting their ability to contract. The impact of lactic acid on performance is now uncertain, it may assist or hinder muscle fatigue. [citation needed]

  7. Anaerobic exercise - Wikipedia

    en.wikipedia.org/wiki/Anaerobic_exercise

    As muscles contract, Calcium ions are released from the sarcoplasmic reticulum by release channels. These channels close and calcium pumps open to relax muscles. After extended exercise, the release channels can begin to leak and cause muscle fatigue. The anaerobic energy systems are:

  8. 8 Common Cardiovascular Diseases for Men & How to Prevent Them

    www.aol.com/8-common-cardiovascular-diseases-men...

    A heart attack can cause symptoms such as: Chest pain that often radiates to your left shoulder, neck, or arm. Abdominal pain. Shortness of breath. Fatigue. Pressure or heaviness in your chest ...

  9. Bioenergetic systems - Wikipedia

    en.wikipedia.org/wiki/Bioenergetic_systems

    ATP is the only type of usable form of chemical energy for musculoskeletal activity. It is stored in most cells, particularly in muscle cells. Other forms of chemical energy, such as those available from oxygen and food, must be transformed into ATP before they can be utilized by the muscle cells.

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