Fatigue of the respiratory muscles during intense exercise might compromise leg blood flow, thereby constraining oxygen uptake ( O2) and limiting exercise tolerance. This study tested the hypothesis that inspiratory muscle training (IMT) would reduce inspiratory muscle fatigue, speed O2 kinetics and enhance exercise tolerance.
“Specific training of the inspiratory muscles increased baseline MIP, reduced estimated inspiratory muscle fatigue during severe and maximal-intensity exercise, and enhanced O2 dynamics and exercise tolerance…
“Pressure-threshold IMT appears to present a practical and efficacious means for modulating the O2 response to high-intensity exercise in healthy young people…”
“IMT therefore appears to have considerable potential as an adjunct to physical training for the enhancement of exercise performance.”