Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Respiratory muscles"”.
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RESPIRATORY MUSCLE UNLOADING AND ENDURANCE EXERCISE PERFORMANCE
… was hypothesised that if the normal loads on the respiratory muscles contribute to the limitation of endurance exercise, then a reduction of these loads (resistive unloading) should improve exercise performance. Inspiratory (I) and expiratory (E) unloading is possible at rest and moderate exercise …
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Respiratory muscle work and inspiratory muscle training on cytokines, oxidative stress and diaphragm fatigue in younger and older populations
Increased respiratory muscle work is encountered during strenuous whole-body exercise, and at rest in older adults and those with pulmonary limitations such as chronic obstructive pulmonary disease (COPD). When sufficiently strenuous it can result in diaphragmatic fatigue, increased blood lactate …
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Vocal modulation features in the prediction of major depressive disorder severity
… contribute to amplitude modulation (AM): AM from respiratory muscles and from interaction between formants and frequency modulation in the fundamental frequency harmonics. Based on the modulation model, we test three methods to extract the envelope of the third formant from which features are …
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Physiological consequences of the work of breathing and of inspiratory muscle training
… training (IMT). However, whether the inspiratory muscles are, in part, the source of these reductions remains unknown. Accordingly, this thesis investigated: (I) the contribution of the respiratory muscles to the systemic [lac-]B and (II) the effects of IMT upon inspiratory muscle lactate exchange …
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Is our breathing optimal? : this dissertation is submitted for the degree of Doctor of Philosophy, School of Natural and Computational Sciences, Massey University, New Zealand
… inhalation, the average force exerted by the respiratory muscles, and the weighted sum of volumetric acceleration and work during inhalation; all of these objective functions were studied using 1D models and all provided physiologically acceptable minima under normal conditions. The thesis …
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Respiratory function: A systems approach
… affecting V˙A, and the medullary pontine respiratory center (MPRC) in the brain stem. The MPRC is responsible for generating the basic rhythm of breathing and corrects for disturbances. Neurons inside the MPRC are organized into a central pattern generator (CPG), the functionality of which …
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The Effects of Frequent Smartphone Use on Children’s Upper Posture and Pulmonary Function
… pressures (MEP) were measured to assess respiratory muscles’ strength. A significant difference in CVA measures was found between both groups; girls (p=0.02) and boys (p=0.03). Cervical ROM in extension was limited in addicted boys (p=0.04). Also, in addicted boys, FVC and FEV1 were …
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Moderators of respiratory muscle function in health, exercise and disease
… series of studies investigating the role of the respiratory muscles in both healthy and diseased populations. <br/><br/>To test directly the role of the respiratory muscles in a healthy population various strategies were used. Two studies examined the effects of training these muscles to bring …
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PERFLUOROCHEMICAL AUGMENTED INTRATRACHEAL DELIVERY OF ANTIOXIDANT ENZYMES AND GENES TO ATTENUATE OXIDATIVE STRESS-INDUCED LUNG AND RESPIRATORY MUSCLE ALTERATIONS
… gas exchange prompting increased loading of the respiratory muscle. These abnormalities of pulmonary structure and function increase the work of breathing necessitating increased respiratory muscle force production to maintain alveolar ventilation. When the load placed on the respiratory muscle …
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Outcomes of Enteral Feeding in Motor Neurone Disease
… wasting and weakness of the bulbar, limb and respiratory muscles. Symptomatic treatment remains the cornerstone of management. Malnutrition is a common occurrence and an independent risk factor for worse prognosis. Clinical guidelines recommend enteral feeding when there is deterioration in …
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A qualitative study into the communication surrounding the initiation and withdrawal of non-invasive ventilation (NIV) in people with Motor Neurone Disease
… nervous system and muscular control. Eventually respiratory muscles weaken, causing breathing, communication and swallowing difficulties, and ultimately, respiratory failure and death. Improved quality of life and potentially a short extension of life can be provided with non-invasive ventilation …
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A review of cases of motor neurone disease seen at Groote Schuur Hospital from 2005 to 2010
… occurs. Progressive weakness of limb, bulbar and respiratory muscles eventually results in death. Most descriptive and epidemiological studies of MND have been performed in the industrialized countries of Europe and North America. We know very little about the incidence or prevalence of MND in …
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The design and evaluation of the P₀.₁ method of assessing ventilatory drive
… is reduced in a patient suffering from damped respiratory centre activity. The P 0.1 method is a modification of the rebreathing technique where a patient rebreathes from a bag prefilled with a mixture of gases of known concentrations. This modification is not sensitive to airflow obstruction …
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A prospective cohort study of the correlation between chest circumference and spirometry measurements over a 19-week intense training programme
… to increase VO2 max and the strength of the respiratory muscles. Thus, the aim of the study was to determine whether a strong, significant correlation between chest circumference measurements and spirometry measures existed in a young healthy active population, and whether this relationship …
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Πολυμορφισμός του γονιδίου του μετατρεπτικού ενζύμου της αγγειοτενσίνης και λειτουργία των αναπνευστικών μυών σε νεογνά
Το γονίδιο του ανθρώπινου μετατρεπτικού ενζύμου της αγγειοτενσίνης ACE περιέχει έναν πολυμορφισμό δύο αλληλομόρφων που αποτελείται είτε από την παρουσία (I) είτε από την απουσία (D) ενός τμήματος 287 ζευγών βάσεων (bp). Πρόσφατες μελέτες έχουν προτείνει ότι το αλληλόμορφο Ι, μπορεί να σχετίζεται με …