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  2. Muscles of respiration - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_respiration

    This compresses the abdominal cavity, raises the ribs upward and outward and thus expands the thoracic cavity. This expansion draws air into the lungs. When the diaphragm relaxes, elastic recoil of the lungs causes the thoracic cavity to contract, forcing air out of the lungs, and returning to its dome-shape. [1]

  3. Aerobic conditioning - Wikipedia

    en.wikipedia.org/wiki/Aerobic_conditioning

    Aerobic conditioning is the use of continuous, rhythmic movement of large muscle groups to strengthen the heart and lungs (cardiovascular system), [1] as well as changes to the skeletal muscles. [2]

  4. Cardiorespiratory fitness - Wikipedia

    en.wikipedia.org/wiki/Cardiorespiratory_fitness

    The cardiovascular system responds to changing demands on the body by adjusting cardiac output, blood flow, and blood pressure. Cardiac output is defined as the product of heart rate and stroke volume which represents the volume of blood being pumped by the heart each minute. Cardiac output increases during physical activity due to an increase ...

  5. Thoracic diaphragm - Wikipedia

    en.wikipedia.org/wiki/Thoracic_diaphragm

    The diaphragm is the main muscle of respiration and functions in breathing. During inhalation, the diaphragm contracts and moves in the inferior direction, enlarging the volume of the thoracic cavity and reducing intra-thoracic pressure (the external intercostal muscles also participate in this enlargement), forcing the lungs to expand.

  6. Respiratory adaptation - Wikipedia

    en.wikipedia.org/wiki/Respiratory_adaptation

    Respiratory adaptation is the specific change that the respiratory system undergoes in response to the demands of physical exertion. Intense physical exertion, such as that involved in fitness training, places elevated demands on the respiratory system. Over time, this results in respiratory changes as the system adapts to these requirements. [1]

  7. Aerobic exercise - Wikipedia

    en.wikipedia.org/wiki/Aerobic_exercise

    Strengthens and enlarges the heart muscle, to improve its pumping efficiency and reduce the resting heart rate, known as aerobic conditioning; May improve circulation efficiency and reduce blood pressure; May help maintain independence in later life [41] [6] Increases the total number of red blood cells in the body, facilitating transport of ...

  8. Control of ventilation - Wikipedia

    en.wikipedia.org/wiki/Control_of_ventilation

    The control of ventilation is the physiological mechanisms involved in the control of breathing, which is the movement of air into and out of the lungs. Ventilation facilitates respiration. Respiration refers to the utilization of oxygen and balancing of carbon dioxide by the body as a whole, or by individual cells in cellular respiration. [1]

  9. Cardiovascular fitness - Wikipedia

    en.wikipedia.org/wiki/Cardiovascular_fitness

    Cardiovascular fitness is a component of physical fitness, which refers to a person's ability to deliver oxygen to the working muscles, including the heart.Cardiovascular fitness is improved by sustained physical activity (see also Endurance Training) and is affected by many physiological parameters, including cardiac output (determined by heart rate multiplied by stroke volume), vascular ...

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