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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