Inspiratory Muscles Can Be Trained To Increase Strength Or Endurance

“This study examined whether resistive loading can train the inspiratory muscles differentially.”


“Results demonstrate that pressure threshold resistive inspiratory muscle training can be utilised to train specifically for improvements in strength or endurance and that the improvements are maintained well post-training.”

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Inspiratory Resistive Loading Improves Cycling Capacity: A Placebo Controlled Trial

“Respiratory muscle training has been shown to improve both its strength and endurance. The effect of these improvements on whole-body exercise performance remains controversial.”

The objective of this study was to “assess the effect of a 10 week inspiratory resistive loading intervention on respiratory muscle performance and whole-body exercise endurance.”


Ten weeks of inspiratory resistive loading attenuated the heart rate, ventilatory, and perceptual response to constant workload exercise, and improved the cycling time to exhaustion. Familiarisation was not a factor and the placebo effect was minimal.”

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The Effects Of Different IMT Intensities On Exercising Heart Rate And Perceived Exertion

“This study investigated the relationship between the intensity of an inspiratory muscle training programme and its effect on respiratory muscle strength, exercising heart rate, and ratings of perceived exertion.”


Six weeks of both MAX (subjects that trained at 100% of maximum inspiratory pressure i.e. MIP) and SUB (subjects that trained at 80% MIP) training were sufficient to improve inspiratory muscle strength. However, exercising heart rate and perceived exertion decreased with MAX training only.

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