Analysis of ventilatory, metabolic and cardiovascular autonomic responses during inspiratory muscle endurance and critical inspiratory pressure tests
| Autor: | Minatel, Vinicius |
|---|---|
| Přispěvatelé: | Catai, Aparecida Maria |
| Jazyk: | portugalština |
| Rok vydání: | 2017 |
| Předmět: |
Variabilidade da frequência cardíaca
FISIOTERAPIA E TERAPIA OCUPACIONAL [CIENCIAS DA SAUDE] Interação cardiopulmonar Breathing exercise Músculos respiratórios Padrão respiratório Exercícios respiratórios Sistema nervoso autônomo Autonomic nervous system Cardiopulmonary interaction Função barorreflexa Physical therapy Fisioterapia Respiratory muscle Breathing pattern Baroreflex function |
| Zdroj: | Repositório Institucional da UFSCAR Universidade Federal de São Carlos (UFSCAR) instacron:UFSCAR |
| Popis: | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Respiratory muscle weakness has a strong relationship with autonomic cardiovascular control dysfunction and exercise limitation. For this reason, inspiratory muscle training programs (IMT) have been applied to improve respiratory muscle strength/endurance, exercise performance and autonomic cardiovascular control. However, the optimal IMT intensity to induce a better systemic response has not been defined yet. Therefore, we developed our First Study, that aimed to identify the inspiratory critical pressure (PThC) using the critical power model in healthy men, evaluate the ventilatory and metabolic responses at the PThC and identify the predictors variables of PThC and propose an equation to obtain it. The participants of the study (n=79) underwent the PThC protocol, which consisted of a progressive inspiratory threshold-loading test to set the sustained maximal inspiratory load (PThMAX). In a subsequent visit was carried out a constant load inspiratory exercise protocol (95%, 100% and 105%PThMAX). Both tests were performed until task failure using a linear inspiratory load resistor connected in series to a gas exchange analysis system. The inspiratory endurance time for each load was used to calculate the PThC, and the resulting value was tested using a constant load protocol performed in a different day from previous tests. Results showed that PThC was influenced by age and weight (R=0.66, R2=0.43, p |
| Databáze: | OpenAIRE |
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