Abstract
Introduction: The most important muscle of the respiratory system is diaphragm muscle which is responsible for most of the inspiration. In addition to being an inspiratory muscle, diaphragm muscle is a core muscle. Core muscles work all together to generate maximal stability in the abdominal and the lumbar back region. In this respect, if inspiratory muscles loading (IML) occurs, it may affect core endurance. Aims and objectives: The main aim of this study was to investigate the influence of acute IML on core endurance. Methods: A total of 32 healthy male university students were included in the study. Participants9 demographic information, pulmonary function test values, and respiratory muscle strength (Maximum Inspiratory and Expiratory Pressure [MIP and MEP]) were evaluated. During the loading protocol, all participants underwent inspiratory threshold loading to induce IML. Participants were instructed to inspire maximally to generate a negative threshold pressure of 60% of their MIP during twenty minutes. Core endurance tests (sit-up test, right and left side bridge test, trunk flexor endurance test, Sorensen test) were performed both before and after IML. Participants9 saturation, fatigue and dyspnea (Modified Borg Scale) were assessed before and after IML. Results: All core endurance tests9 scores were significantly lower after IML than before IML(sit-up test [p Conclusions: We found that core endurance was decreased after IML. These results suggest that better inspiratory muscle endurance provides better core endurance in young healthy male subject.
Published Version
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