Unfortunately, an incorrect figure was provided in the original manuscript. Figure 1 has to be substituted by Fig. 2. A new Fig. 2 is now provided. The correct Figs. 1 and 2 with according captions are given below. After the NYHA functional class analysis using the McNemar test, the p value is missing in the Results section of the Abstract. The correct text is reproduced below. Results All groups showed similar quality-of-life improvements. Low and moderate intensities training programs improved inspiratory muscle strength, peripheral muscle strength, and walking distance. However, only moderate intensity improved expiratory muscle strength and NYHA functional class (p = 0.031) in HF patients. The online version of the original article can be found under

Heart rate variability (HRV) analysis is a useful method to assess abnormal functioning in the autonomic nervous system and to predict cardiac events in patients with heart failure (HF). HRV measurements with heart rate monitors have been validated with an electrocardiograph in healthy subjects but not in patients with HF. We explored the reproducibility of HRV in two consecutive six-minute walk tests (6MW), 60-minute apart, using a heart rate monitor (PolarS810i) and a portable electrocardiograph (called Holter) in 50 HF patients (mean age 59 years, NYHA II, left ventricular ejection fraction ~35%). The reproducibility for each device was analysed using a paired t-test or the Wilcoxon signed-rank test. Additionally, we assessed the agreement between the two devices based on the HRV indices at rest, during the 6MW and during recovery using concordance correlation coefficients (CCC), 95% confidence intervals and Bland-Altman plots. The test-retest for the HRV analyses was reproducible using Holter and PolarS810i at rest but not during recovery. In the second 6MW, patients showed significant increases in rMSSD and walking distance. The PolarS810i measurements had remarkably high concordance correlation [0.86

OBJECTIVES:There is evidence that outdoor workers exposed to high levels of air pollution exhibit airway inflammation and increased airway symptoms. We hypothesized that these workers would experience increased airway symptoms and decreased nasal mucociliary clearance associated with their exposure to air pollution.METHODS:In total, 25 non-smoking commercial motorcyclists, aged 18-44 years, were included in this study. These drivers work 8-12 hours per day, 5 days per week, driving on urban streets. Nasal mucociliary clearance was measured by the saccharine transit test; airway acidification was measured by assessing the pH of exhaled breath condensate; and airway symptoms were measured by the Sino-nasal Outcome Test-20 questionnaire. To assess personal air pollution exposure, the subjects used a passive-diffusion nitrogen dioxide (NO2) concentration-monitoring system during the 14 days before each assessment. The associations between NO2 and the airway outcomes were analyzed using the Mann-Whitney test and the Chi-Square test. Clinicaltrials.gov: NCT01976039.RESULTS:Compared with clearance in healthy adult males, mucociliary clearance was decreased in 32% of the motorcyclists. Additionally, 64% of the motorcyclists had airway acidification and 92% experienced airway symptoms. The median personal NO2 exposure level was 75 mg/m3 for these subjects and a significant association was observed between NO2 and impaired mucociliary clearance (p = 0.036).CONCLUSION:Non-smoking commercial motorcyclists exhibit increased airway symptoms and airway acidification as well as decreased nasal mucociliary clearance, all of which are significantly associated with the amount of exposure to air pollution.

Unfortunately, an incorrect figure was provided in the original manuscript. After the NYHA functional class analysis using the McNemar test, the p value is missing in the Results section of the Abstract. The correct text is reproduced below.Results All groups showed similar quality-of-life improvements. Low and moderate intensities training programs improved inspiratory muscle strength, peripheral muscle strength, and walking distance. However, only moderate intensity improved expiratory muscle strength and NYHA functional class (p = 0.031) in HF patients.The online version of the original article can be found under

No abstract

A insuficiência cardíaca (IC) é uma síndrome clínica, via final comum de diversas doenças cardíacas. O estudo teve como objetivo avaliar a qualidade de vida, a capacidade funcional e a força muscular respiratória em pacientes com IC classe funcional I e II. Tratou-se de um estudo observacional transversal, com amostra composta por 20 indivíduos com faixa etária entre 58 e 82 anos, em acompanhamento clínico no Centro Clínico de Especialidades Médicas de Patos de Minas. Após a realização dos testes, foi observado em relação à qualidade de vida que o domínio mais comprometido foi o de limitação por aspectos físicos. Não houve limitação na capacidade funcional e na força muscular respiratória, devido aos indivíduos realizarem acompanhamento fisioterapêutico. A IC gera um impacto negativo sobre a qualidade de vida e que a fisioterapia é indispensável no acompanhamento e prognóstico desta população.Palavras-chave: Fisioterapia, insuficiência cardíaca, músculos respiratórios, qualidade de vida.

Introdução: A síndrome da apneia obstrutiva do sono (SAOS) é caracterizada pela obstrução das vias aéreas superiores durante o sono, o que causa efeitos sistêmicos durante a vigília. Objetivo: O objetivo deste estudo é avaliar a capacidade funcional, a força da musculatura respiratória e o pico de fluxo expiratório (PFE) de pacientes com SAOS. Métodos: Trata-se de um estudo transversal realizado na cidade de Patos de Minas/MG no ano de 2019, no qual foram incluídos 14 indivíduos que possuíam SAOS moderada e grave. Primeiramente os pacientes responderam a um questionário sociodemográfico elaborado pelos autores. Em seguida, foi realizada a manovacuometria, a mensuração do PFE e o teste de caminhada de seis minutos (TC6M). Resultados: A maioria dos pacientes eram homens (71,4%), obesos (78,6%) e hipertensos (57,1%). Como resultados dos testes obtivemos - PImáx obtida vs predita = 86,4 vs 102,8 (p = 0,004), PEmáx obtida vs predita = 98,5 vs 113,5 (p = 0,05), PFE obtido vs predito = 381,3 vs 495,8 (p < 0,001) e TC6M obtido vs predito = 485,3m vs 536,6m (p = 0,03). Conclusão: Nessa amostra de indivíduos com SAOS grave e moderada houve redução da força muscular respiratória, do PFE, e da capacidade funcional.Palavras-chave: síndromes da apneia do sono, músculos respiratórios, tolerância ao exercício.

No abstract