Pressure Threshold IMT Improves Submaximal Cycling Performance

“Improvements in submaximal endurance performance have been reported following 4 weeks of respiratory muscle training comprising isocapnic hyperpnea (Boutellier et al., 1992).  The purpose of the present study was to examine whether similar effects would be observed using resistive, flow independent loading of the inspiratory muscles.”

Conclusion:

Whilst preliminary in nature, these results indicate that resistive, flow independent inspiratory muscle training improves submaximal exercise performance in endurance trained subjects. Furthermore they add credibility to Boutellier’s assertion that, “the respiratory system is an exercise limiting factor in normal, endurance trained subjects.”

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Respiratory Muscle Activity During Simultaneous Stationary Cycling and IMT

“The purpose of our study was to determine the effect of IMT on respiratory muscle EMG-activity during stationary cycling in the upright and drops postures as compared to IMT performed alone.”

Conclusion:

“These results support our hypothesis in that IMT while cycling increases respiratory EMG activity to a significantly greater extent than performing IMT solely at rest, suggesting that the combination of IMT and cycling may provide an additive training effect.”

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Effects Of Respiratory Muscle Training On Respiratory Mechanics And Energy Cost

“Resistance respiratory muscle training (RRMT) increases respiratory muscle strength and can increase swimming endurance time by as much as 85%. The purpose of this study was to examine potential mechanisms by which RRMT improves exercise endurance.”

Conclusion:

“Most importantly, respiratory muscle efficiency increased (+83% at 2.7 ATA submersed i.e. atmosphere absolute).”

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