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Respiratory muscle function in health.

D F Rochester

    Heart & Lung : the Journal of Critical Care
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Respiratory muscles, including the diaphragm, power breathing and exercise ventilation. Training can enhance respiratory muscle strength and endurance, though fatigue can occur under strenuous conditions.

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    Area of Science:

    • Physiology
    • Respiratory Mechanics
    • Exercise Physiology

    Background:

    • Breathing relies on inspiratory muscles, primarily the diaphragm, and accessory muscles.
    • Expiratory muscles are crucial for forceful actions like coughing.
    • Respiratory muscle strength is influenced by neural input, muscle length, velocity, and fiber properties.

    Purpose of the Study:

    • To review the function and properties of respiratory muscles.
    • To discuss factors affecting respiratory muscle strength and endurance.
    • To examine the effects of training on respiratory muscles.

    Main Methods:

    • Review of physiological principles governing respiratory muscle function.
    • Analysis of factors influencing muscle contraction strength and endurance.

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  • Discussion of respiratory muscle response to training and fatigue.

    • Main Results:

    • Respiratory muscles possess high endurance due to their fiber type and blood supply.
    • Inspiratory muscle fatigue can occur during intense exercise, hypoxia, or hyperbaric conditions.
    • Strength training improves muscle strength, while endurance training enhances ventilatory endurance.

    Conclusions:

    • Respiratory muscles are vital for both quiet breathing and exercise.
    • Understanding respiratory muscle physiology is key to managing respiratory function.
    • Targeted training can optimize respiratory muscle performance.