Oxygen Uptake Kinetics And Maximal Aerobic Power Are Unaffected By IMT In Healthy Subjects Where Time To Exhaustion Is Extended

“The aim of this study was to determine whether 4 weeks of inspiratory muscle training (IMT) would be accompanied by alteration in cardiopulmonary fitness as assessed through moderate intensity oxygen uptake (V(.)O(2)) kinetics and maximal aerobic power (V(.)O(2max)).”

Conclusion:

“The most plausible explanation for the stability in V(.)O(2) kinetics and V(.)O(2max) following IMT is that it is due to insufficient whole-body stress to elicit either central or peripheral cardiopulmonary adaptation. The extension of post-training T(lim) suggests that IMT might be useful as a stratagem for producing greater volumes of endurance work at high ventilatory loads, which in turn could improve cardiopulmonary fitness.”

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Four Weeks of Inspiratory Muscle Training Improves Self-Paced Walking Performance in Overweight and Obese Adults

“The objective of this study was to examine whether a programme of inspiratory muscle training (IMT) improves accumulative distance of self-paced walking in overweight and obese adults.”

Conclusion:

“This study indicates that IMT may provide a practical, inexpensive, and minimally intrusive intervention to augment both inspiratory muscle strength and walking distance among overweight and obese adults. The beneficial effects of this treatment were similar to those previously reported from vigorous, supervised training among hospitalised obese patients. Our findings indicate similar effects could be expected without the need for hospitalisation and indicate that IMT via an inspiratory resistance device can easily be performed in the home environment. IMT therefore appears a useful strategy to enhance walking performance in overweight and obese individuals which may prove a meaningful priming intervention with which to stimulate performance adaptations and future engagement with physical activity.”

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Oxygen Uptake Kinetics And Maximal Aerobic Power Are Unaffected By IMT In Healthy Subjects Where Time To Exhaustion Is Extended

“The aim of this study was to determine whether 4 weeks of inspiratory muscle training (IMT) would be accompanied by alteration in cardiopulmonary fitness as assessed through moderate intensity oxygen uptake (V_O2) kinetics and maximal aerobic power (V_ O2max).”

Conclusion:

“The improvement of maximal static inspiratory mouth pressure (Pi,max) in training group shows that IMT training enhances inspiratory muscle strength; however, this is not supported by improvement in either VO2 kinetics or VO2max. It is therefore likely that IMT training alone is not of direct benefit to the cardiopulmonary fitness of healthy subjects. However, diaphragmatic fatigue may have a limiting role in maximal constant-load exercise and consequently, IMT might be a useful stratagem of extracting greater volumes of endurance work at high ventilatory loads, which in turn could improve cardio-pulmonary fitness.”

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Concurrent inspiratory muscle and cardiovascular training improves both perceptions of effort and 5000-m running performance

“This study examined whether inspiratory muscle training (IMT) is a useful additional training aid with which to augment cardiovascular exercise training adaptations.”

Conclusion:

“The addition of IMT to a cardiovascular training programme augments 5000-m running performance but exerts no additional influence over VO2 max compared with a cardiovascular-training group. This is probably due to IMT-induced reductions in perceived effort at high ventilatory rates which is of greater consequence to longer duration time-trial performances than incremental tests of VO2 max.”

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Inspiratory Muscle Training And Endurance: A Central Metabolic Control Perspective

“This commentary examines the pertinent research and practical performance implications of Inspiratory Muscle Training from the holistic perspective of complex central metabolic control.”

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