Respiratory Muscle Strength in Congestive Heart Failure

Hammond, Michael D.; Bauer, Karen A.; Sharp, John T.; Rocha, Robert D.

doi:10.1378/chest.98.5.1091

Cited by 172 publications

(126 citation statements)

References 4 publications

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“…Similar changes might occur in the inspiratory skeletal muscles. Studies have found respiratory muscle weakness [3] and reduced respiratory muscle endurance [4] in patients with CHF. In addition, patients with heart failure show an increased ventilatory response to exercise [5], further exacerbating the imbalance between inspiratory muscle capacity and load.…”

mentioning

confidence: 99%

Diaphragmatic function after intense exercise in congestive heart failure patients

Kufel¹,

Pineda²,

Junega³

et al. 2002

Eur Respir J

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Respiratory muscle strength and endurance is reduced in patients with congestive heart failure, making these patients susceptible to diaphragmatic fatigue during exercise.In order to determine whether or not contractile fatigue of the diaphragm occurs in patients with congestive heart failure following intense exercise, twitch transdiaphragmatic pressures (twitch Ptdi) were measured during unpotentiated and potentiated cervical magnetic stimulation (CMS) of the phrenic nerves before and at intervals after cycle endurance exercise.Ten patients aged 65.7 ¡ 6.0 yrs (mean ¡ SD) with an ejection fraction of 31.2 ¡ 9.8% performed a constant-load symptom-limited exercise test at 60% of their peak work capacity. Twitch Ptdi at baseline were 15.9¡6.3 cmH 2 O (unpotentiated CMS) and 28.8¡ 10.7 cmH 2 O (potentiated CMS) and at 10 min postexercise were 16.4¡4.7 cmH 2 O (unpotentiated CMS) and 27.6¡10.1 cmH 2 O (potentiated CMS). One patient demonstrated a sustained fall in twitch Ptdi of o15%, considered potentially indicative of diaphragmatic fatigue.Contractile diaphragmatic fatigue is uncommon in untrained patients with congestive heart failure following high-intensity constant-workload cycle exercise. Therefore, diaphragmatic fatigue is an unlikely cause of exercise-limitation during activities of daily living in heart failure patients.

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mentioning

confidence: 99%

Diaphragmatic function after intense exercise in congestive heart failure patients

Kufel¹,

Pineda²,

Junega³

et al. 2002

Eur Respir J

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“…All patients were receiving medical management of their cardiomyopathy in accordance with the 2013 American College of Cardiology Foundation/American Heart association (ACCF/AHA) guidelines for management of heart failure [10,11]. Patients were receiving the following medications: Betablockers (n=18), loop diuretics (16), spironolactone (18), torsemide (1), digoxin (7), angiotensin receptor antagonists (9), angiotensin converting enzyme inhibitors (7), vasodilators (7) and amiodarone (2). History concerning medical and smoking history and respiratory symptoms, as well as hospitalizations for acute cardiorespiratory illness were recorded.…”

Section: Subjectsmentioning

confidence: 99%

“…Skeletal muscle weakness and reduced respiratory muscle endurance contribute to these symptoms [1][2][3][4]. The current New York Heart Association (NYHA) classification of patients according to exercise limitation is a subjective measure of disability and has limited relation to objective measures of exercise tolerance.…”

Section: Introductionmentioning

confidence: 99%

Breathing Intolerance Index and Control of Ventilation, a Non-invasive Method for Evaluating Inspiratory Muscle Endurance at Rest and Exercise, in Patients with Cardiomyopathy: One Year Follow-up

Bagavathy¹,

Fong²,

Grazette³

et al. 2017

J Pulm Respir Med

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“…No processo expiratório vários são os fatores que podem contribuir para o fracasso pós-exercício, visto que tanto os músculos respiratórios quanto os demais, que compõem o esqueleto, podem reduzir sua funcionalidade mediante esforço 12 . Assim, faz-se relevante a inserção de um teste adjacente para avaliar a potência muscular, a fim de constituir de forma mais fidedigna o acompanhamento das respostas ao treinamento e suas respostas sobre a capacidade física.…”

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Comparação dos modelos de periodização linear e não linear em atletas de kung fu no período pré-competitivo

Pinto¹,

Alves²,

Silva³

et al. 2009

Fit Per J

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Machado LF, Alves LB, Seixas da Silva IA, Gomes ALM. Comparação dos modelos de periodização linear e não linear em atletas de kung fu no período pré-competitivo. Fit Perf J. 2009 set-out;8(5):329-34. RESUMOIntrodução: Dentre os modelos de periodização, que é a distribuição das cargas de trabalho ao longo de um período, podem-se citar dois: o modelo de periodização linear destina-se à aplicação crescente da intensidade, enquanto a periodização ondulatória refere-se à alternância da intensidade ao longo dos ciclos. O objetivo foi comparar as variações do volume expiratório e potência muscular de membros inferiores, como consequência do treinamento pré-competitivo em atletas de kung fu divididos em dois grupos: grupo com periodização ondulatória e aquele com linear. Materiais e Métodos: A amostra foi composta por 14 atletas de kung fu, com idade compreendida entre 18 e 35 anos. As avaliações ocorreram a cada duas semanas em três momentos. O treinamento ocorreu com frequência de dois dias na semana. Foi utilizado um expirômetro portátil para aferir o volume expiratório, e o teste de impulsão horizontal para força de membros inferiores. Resultados: Não foi observada discrepância significativa durante os três momentos de aferição da espirometria e no salto horizontal. Discussão: Não houve diferença entre os modelos de periodização (p>0,05). PALAVRAS-CHAVETreinamento; Espirometria; Força; Kung fu. ABSTRACTIntroduction: Amongst the models of periodization, which is the distribution of work's loads to a determined period, two can be cited: the model of linear periodization destines to increasing application of the intensity, while the not linear model mentions its alternation of the intensity throughout the cycles. The aim of this study was to compare the variations of the expiratory volume and muscular power of inferior members, as a consequence of the period before competition training in kung fu athletes divided in two groups: one group with not linear model and the second group with linear model. Materials and Methods: The sample was composed of 14 kung fu athletes, with ages between 18 and 35 years-old. The evaluations occurred for two weeks at three moments. The training occurred in a frequence of two days during the week. One portable spirometry was used to survey the expiratory volume and the horizontal jump test was used to evaluate the inferior members force. Results: No significant differences were observed during the three moments of the spirometry evaluation and the horizontal jump. Discussion: There were not any differences between the periodizations models (p>0.05).

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Respiratory Muscle Strength in Congestive Heart Failure

Cited by 172 publications

References 4 publications

Diaphragmatic function after intense exercise in congestive heart failure patients

Diaphragmatic function after intense exercise in congestive heart failure patients

Breathing Intolerance Index and Control of Ventilation, a Non-invasive Method for Evaluating Inspiratory Muscle Endurance at Rest and Exercise, in Patients with Cardiomyopathy: One Year Follow-up

Comparação dos modelos de periodização linear e não linear em atletas de kung fu no período pré-competitivo

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