The effect of physical load using a treadmill on respiratory muscle fatigue in terms of the immediate response of respiratory muscle endurance

The study aims to identify the effect of physical load using a treadmill on respiratory muscle fatigue in terms of the immediate response of respiratory muscle endurance. The current study’s problem is crystallized in the following question: Is there an actual effect on the endurance of respiratory muscles (inspiratory and expiratory) and the continuation of force production or its maintenance during the performance of traditional physical load? The researcher hypothesized the existence of significant differences in the results of respiratory muscle endurance between the pre-test and post-test. The descriptive method was used for its suitability to the nature of the current study. The sample consisted of (9) athletes practicing track and field activities, specializing in middle-distance running (800m - 1500m), representing the Nineveh Governorate track and field team. They were deliberately chosen to ensure they were in good health, had high athletic performance, and were non-smokers. The results showed significant differences in the inspiratory muscle endurance variable (IME) with a probability level of (0.001) and significant differences in the expiratory muscle endurance variable (EME) with a probability value of (0.001). The researchers concluded that physical load using a treadmill can increase inspiratory muscle endurance (IME) and expiratory muscle endurance (EME)