Pattern of respiratory muscle activity during exercise tests in children born prematurely

Davidson, Josy; Tsopanoglou, Sabrina Pinheiro; Dourado, Victor Zuniga; Santos, Amélia Miyashiro Nunes dos; Goulart, Ana Lúcia; Amorim, César Ferreira; Solé, Dírceu

doi:10.1016/j.jbmt.2020.02.003

Cited by 1 publication

(1 citation statement)

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“…Respiratory muscle fatigue was suggested to be a more likely contributor to the altered ventilatory response, given increased inspiratory load for the same exercise intensity and, therefore, likely an increased susceptibility to fatigue (25). Supporting this hypothesis, Davidson et al (46) found elevated sternocleidomastoid muscle activity in children born preterm, suggesting increased respiratory muscle activity at high-intensity exercise, which may lead to respiratory muscle fatigue. However, the mechanism(s) driving respiratory muscle fatigue remains largely unknown.…”

Section: Ventilatory Response To Exercisementioning

confidence: 93%

Preterm birth and exercise capacity: what do we currently know?

O’Dea,

Beaven,

Wilson

et al. 2023

Front. Pediatr.

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ObjectivesThe long-term cardiopulmonary outcomes following preterm birth during the surfactant era remain unclear. Respiratory symptoms, particularly exertional symptoms, are common in preterm children. Therefore, cardiopulmonary exercise testing may provide insights into the pathophysiology driving exertional respiratory symptoms in those born preterm. This review aims to outline the current knowledge of cardiopulmonary exercise testing in the assessment of children born preterm in the surfactant era.DesignThis study is a narrative literature review.MethodsPublished manuscripts concerning the assessment of pulmonary outcomes using cardiopulmonary exercise testing in preterm children (aged <18 years) were reviewed. Search terms related to preterm birth, bronchopulmonary dysplasia, and exercise were entered into electronic databases, including Medline, PubMed, and Google Scholar. Reference lists from included studies were scanned for additional manuscripts.ResultsPreterm children have disrupted lung development with significant structural and functional lung disease and increased respiratory symptoms. The association between these (resting) assessments of respiratory health and exercise capacity is unclear; however, expiratory flow limitation and an altered ventilatory response (rapid, shallow breathing) are seen during exercise. Due to the heterogeneity of participants, treatments, and exercise protocols, the effect of the aforementioned limitations on exercise capacity in children born preterm is conflicting and poorly understood.ConclusionRisk factors for reduced exercise capacity in those born preterm remain poorly understood; however, utilizing cardiopulmonary exercise testing to its full potential, the pathophysiology of exercise limitation in survivors of preterm birth will enhance our understanding of the role exercise may play. The role of exercise interventions in mitigating the risk of chronic disease and premature death following preterm birth has yet to be fully realized and should be a focus of future robust randomized controlled trials.

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Section: Ventilatory Response To Exercisementioning

confidence: 93%