Differential effects of exercise intensity and tolerable duration on exercise-induced diaphragm and expiratory muscle fatigue

作者：Tim A. Hardy, Matt R. Chadwick, Carrie Ferguson, Troy J. Cross, Bryan J. Taylor · 发表于：Journal of Applied Physiology · 年份：2024 · DOI：10.1152/japplphysiol.00007.2024 · 被引用次数：3 · 研究领域：Cardiovascular and exercise physiology、Chronic Obstructive Pulmonary Disease (COPD) Research、Exercise and Physiological Responses

Exercise-induced respiratory muscle fatigue contributes to limiting exercise tolerance. Accordingly, better understanding the exercise conditions under which respiratory muscle fatigue occurs is warranted. Although heavy-intensity as well as short- and long-duration severe-intensity exercise performed to intolerance elicit diaphragm and expiratory muscle fatigue, we find, for the first time, that the relationship between exercise intensity, exercise duration, and the magnitude of exercise-induced fatigue is different for the diaphragm compared with the expiratory muscles.