Effectiveness of Non-pharmacologic Interventions on Device-measured Physical Activity in Adults With Cancer, and Methodology Used for Assessment: A Systematic Review and Meta-analysis.

OBJECTIVE: To investigate the effectiveness of different types of interventions aimed at enhancing device-measured physical activity (PA) and summarize the devices and methodologies used to measure PA in adults with cancer. DATA SOURCES: A systematic review was prospectively registered on PROSPERO (CRD42020199466). The search was conducted in PubMed, The Cochrane Library, EMBASE (via Ovid), and PEDro from 2005 onward. STUDY SELECTION: Prospective interventional studies (randomized controlled trials [RCTs], non-randomized controlled trials, and single-group trials), that included adults within 12 months from cancer diagnosis, and device-measured PA before and after commencement of an intervention were included. Studies were excluded if PA was measured at a single time point. Two independent reviewers screened 3033 records and 30 articles met the inclusion criteria. DATA EXTRACTION: Two reviewers independently extracted the data. PEDro scale and GRADE approach were used to assess methodological quality of RCTs and overall quality of evidence, respectively. A meta-analysis of relevant RCTs was conducted. DATA SYNTHESIS: Thirty studies were identified, mainly including adults with multiple cancer types. Interventions were behavior change interventions (n=15), exercise training (n=13), neuromuscular electrostimulation (n=1), or a nutritional program (n=1). The meta-analysis showed improvements on moderate-to-vigorous intensity PA (MVPA) in the experimental group (8 studies; standardized mean difference (SMD)=0.23; 95% CI 0.06-0.39); with subgroup analysis showing that findings were mainly driven by behavior change interventions (5 studies; SMD=0.23, 95% CI 0.05-0.41). An uncertain effect on sedentary behavior, daily steps, and light intensity PA was found. PA was measured with medical devices and commercial wearables, quality of the methodology was variable. CONCLUSIONS: Behavior change interventions increased device-derived MVPA in adult cancer patients who underwent the intervention within 12 months of the cancer diagnosis. Various devices and methodologies were used to assess PA, which limits comparisons across the studies.

Effects of Semisupervised Exercise Training on Health Outcomes in People With Lung or Head and Neck Cancer: Protocol for a Randomized Controlled Trial.

BACKGROUND: Lung or head and neck cancers are known for their high prevalence and mortality rates. Chemotherapy and radiotherapy are usually recommended as cancer treatment for these malignancies; however, they can negatively impact both the physical and mental status of patients. Hence, it is reasonable to consider resistance and aerobic exercise training to prevent these negative health outcomes. Further, several factors prevent patients from attending outpatient exercise training programs, and, therefore, a semisupervised home-based exercise training program may be seen as a well-accepted alternative. OBJECTIVE: The aim of this study will be to investigate the effects of a semisupervised home-based exercise training program on physical performance, body composition, and self-reported outcomes; changes in the initial cancer treatment dose prescribed; number of hospitalizations at 3, 6, and 9 months; and 12-month survival in people with primary lung or head and neck cancer. METHODS: Participants will be randomly allocated to the training group (TG) or control group (CG). The TG will undergo semisupervised home-based resistance and aerobic exercise training throughout their cancer treatment. The resistance training will be performed using elastic bands (TheraBand) twice a week. The aerobic training (ie, brisk walk) will be performed for at least 20 minutes per day outdoors. The equipment and tools used during the training sessions will be provided. This intervention will start the week before treatment commencement, will be performed throughout the duration of the treatment, and will continue for 2 weeks after treatment completion. The CG will undergo usual care (ie, cancer treatment with no formal exercise prescription). Assessments will take place 2 weeks before the beginning of the usual cancer treatment and 2 weeks after treatment completion. The measures of physical function (peripheral muscle strength, functional exercise capacity, and physical activity), body composition, and self-reported outcomes (symptoms of anxiety and depression, health-related quality of life, and symptoms related to the disease and treatment) will be collected. We will report on any change in the initial cancer treatment dose prescribed; number of hospitalizations at 3, 6, and 9 months; and 12-month survival. RESULTS: In February 2021, the clinical trial registration was approved. Recruitment and data collection for the trial are ongoing (as of April 2023, 20 participants had already been randomized), and findings of this study are likely to be published late in 2024. CONCLUSIONS: This exercise training as a complementary treatment for patients with cancer is likely to promote positive effects on the health outcomes assessed, over and above any change in the CG, and prevent the reduction of initial cancer treatment dose prescribed. If these positive effects are shown, they will likely impact long-term outcomes such as hospitalizations and 12-month survival. TRIAL REGISTRATION: Brazilian Clinical Trials Registry (ReBEC) RBR-5cyvzh9; https://ensaiosclinicos.gov.br/rg/RBR-5cyvzh9. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/43547.

Association between demographic factors, anxiety and depression in smokers / Associação entre fatores demográficos, ansiedade e depressão entre tabagistas

Resumo Introdução O tabagismo é uma das principais causas de morte, e embora existam várias estratégias para parar de fumar, a ansiedade e a depressão podem prejudicar este processo. Objetivo Avaliar os níveis de ansiedade e depressão em tabagistas, ajustando os valores para possíveis variáveis de confusão, como sexo, idade, escolaridade e nível socioeconômico. Método Estudo transversal, amostra de 444 indivíduos avaliados em relação ao histórico de tabagismo, níveis de ansiedade e depressão pela Escala Hospitalar de Ansiedade e Depressão e caracterizados conforme o perfil socioeconômico. Resultados Encontrou-se uma associação entre tabagismo e ansiedade (p = 0,003) e entre tabagismo e depressão (p <0,001) mesmo após ajustes para fatores de confusão (tabagismo e ansiedade: OR sexo: 2,01; OR idade: 2,56; OR escolaridade: 2,25; OR nível socioeconômico: 2,26; tabagismo e depressão: OR sexo: 4,80; OR idade: 3,13; OR escolaridade: 1,82; OR nível socioeconômico: 1,81). Conclusão O estudo mostrou que tabagistas apresentam altos níveis de ansiedade e depressão.

Abstract Background Smoking is one of the leading causes of death, although there are several strategies for quitting smoking. Anxiety and depression can hinder this process. Objective To assess levels of anxiety and depression in smokers, adjusting the values for possible confounding variables such as sex, age, schooling, and socioeconomic status. Method Cross-sectional study, the sample included 444 subjects were assessed for smoking history, anxiety levels and depression by the Hospital Anxiety and Depression Scale and characterized according to the socioeconomic profile. Results An association was found between smoking and anxiety (p=0.003) and between smoking and depression (p≤ 0.001) even after adjustments for confounding factors (Smoking and anxiety: OR Sex: 2.01; OR Age: 2.56; OR Schooling: 2.25; OR Socioeconomic level: 2.26; Smoking and Depression: OR Sex: 4.80; OR Age: 3.13; OR Schooling: 1.82; OR Socioeconomic level: 1.81). Conclusion The study showed that smokers present high anxiety and depression.

Short-Term Effects of a Resistance Training Program Using Elastic Tubing in Patients with Heart Disease

Abstract Background Resistance training is effective in cardiac rehabilitation; however, it is conventionally performed using free weights or machines, which can pose logistic challenges to patients with restricted mobility. For its ease of access and cost-effectiveness, elastic tubing is a particularly appealing alternative, but it remains underutilized for this purpose. Objective To evaluate muscle strength, functional capacity, aerobic capacity, and quality of life in patients with heart disease in phase II of cardiovascular rehabilitation after a resistance training intervention based solely on elastic tubing. Methods Thirteen patients with heart disease (age 63.33±10.80 years) trained with elastic tubing twice weekly for 6 weeks, with progressive load increase every 15 days. The following muscle groups were evaluated and trained: shoulder abductors and flexors, elbow flexors, and knee flexors and extensors. Muscle strength was evaluated using a dynamometer; functional capacity, with a 6-minute walk test and cardiopulmonary exercise test; and quality of life, using the SF-36 questionnaire. Data normality was assessed using the Shapiro-Wilk test. The paired Student's t-test was used for comparisons before and after training, at a significance level of <5%. Results There were significant differences in muscle strength (except for elbow flexion) and functional capacity (485.5 ± 123.3 vs 578.7 ± 110.5; p=0.0399) after the intervention. No statistical differences were found in cardiorespiratory fitness or quality of life. Conclusions Short-term resistance training with elastic tubing improved peripheral muscle strength and functional capacity in patients with heart disease, and should be encouraged for this population. (Int J Cardiovasc Sci. 2020; xx(x):xxx-xxx)

Acute Effect of Resistance Exercise on Mucociliary Clearance in Active Smokers

Abstract Background: Nasal mucociliary clearance (NMC) responds to autonomic activity through exercise. However, there is a gap in the literature on how NMC responds to resistance exercise. Objective: To evaluate the acute effects of resistance tube exercise on NMC and the autonomic nervous system in smokers. Methods: Clinical trial was performed with 18 individuals. Personal, anthropometric, and smoking history data were collected, and a pulmonary function test was performed by spirometry. The fatigue resistance test was performed in order to obtain the number of repetitions for the prescription of exercise. Heart rate variability was captured using a monitor. Subsequently, the exhaled carbon monoxide (exCO) was measured and a saccharin transit test (STT) was performed for NMC. Results: The non-smoking group presented a significant decrease of 4.0±3.2 minutes in STT after P1 (p=0.021). Regarding HRV, the smoking group presented a significant decrease of mean RR (−90.3±53.0; p=0.011), SDNN (−560.0±1333.2; p=0.008), RMSSD (−13.6±10.5; p=0.011), LFms² (−567.3±836.1; p=0.008), HFms² (−223.8±231.8; p=0.008), SD1 (−9.7±7.4; p=0.011) and SD2 (−20.7±17.0; p=0.008), and an increase of mean HR (10.2±5.9; p=0.011) after P2. In the non-smoking group, a significant decrease was observed in the mean RR (−67.1±70.7; p=0.038), SDNN (−16.8±15.0; p=0.015), RMSSD (−12.3±14.7; p=0.011), LFms² (−831.2±1347.5; p=0.015), SD1 (−8.7±10.4; p=0.011), and SD2 (−22.0±19.1; p=0.015), while an increase in HR (7.1±7.3; p=0.028) was found after P1. Conclusions: The intensity of the resistance exercise applied to the patient was not enough to promote changes in smokers. By contrast, in non-smokers, the same intensity of exercise was effective in promoting alterations in the NMC and autonomic activity. (Int J Cardiovasc Sci. 2021; 34(2):223-230)

Mucociliary Clearance of Different Respiratory Conditions: A Clinical Study.

Introduction Mucociliary clearance (MCC) is the first line of defense of the pulmonary system. Mucociliary clearance impairment may lead to increased risk of respiratory infections, lung injury, pulmonary repair problems, chronic dysfunctions and progression of respiratory diseases. Objective To characterize the MCC of active and passive smokers and individuals with chronic obstructive pulmonary disease (COPD) and compare the MCC behaviors between men and women of different age groups. Methods Patients with COPD (current smokers and ex-smokers) and apparently healthy individuals (current smokers, passive smokers and nonsmokers) were evaluated. All of the subjects underwent lung function and MCC evaluation (saccharin transport test [STT]). Smokers (with or without COPD) were questioned about the smoking history. Results A total of 418 individuals aged 16 to 82 years old, of both genders, were evaluated. The STT values of active and passive smokers were statistically higher than those of the control group ( p < 0.01). Men of the control group had lower values of STT than active smokers (9.7 ± 7.1 and 15.4 ± 10.1 minute, respectively, p < 0.01). In addition, higher MCC velocity was observed in women that are current smokers (11.7 ± 6.8 minute) compared with men (15.4 ± 10.1 minute) in this group ( p = 0.01). Among the younger age groups (< 50 years old), only passive smokers presented higher STT in relation to the control group. Conclusion Passive and active smoking are factors that influence negatively the MCC, and passive smokers may present losses of this mechanism at a younger age. Additionally, male smokers present worse MCC than male nonsmokers.

Effectiveness of Aerobic Exercise on Smoking Cessation in Adults: A Systematic Review and Meta-Analysis.

BACKGROUND: The specific benefits of aerobic exercises in smoking cessation are unclear, as they have different characteristics, intensities, and durations. The purpose of this systematic review with meta-analysis was to evaluate the effects of aerobic exercise, with or without co-interventions, compared with a control group of cognitive behavior treatment on smoking cessation. METHODS: This review was prospectively registered on PROSPERO, and the searches were performed from 2016 to 2018. Randomized controlled trials evaluating the effects of aerobic exercise, with or without nicotine therapy replacement, compared with usual care were included. The primary outcome was smoking cessation defined as the prevalence of those who quit or continuous abstinence. Meta-analysis was calculated using random effects model in the comprehensive meta-analysis software. RESULTS: The authors identified 18 trials reporting data for a total of 2815 participants. There was moderate-quality evidence that aerobic exercise was better than usual care in promoting smoking cessation at short term (11 trials, risk ratio 0.79; 95% confidence interval, 0.66-0.94). However, there were no differences between aerobic exercises and usual care at medium- or long-term follow-ups. CONCLUSIONS: According to review, aerobic exercise may be effective in promoting smoking cessation at short-term, but not at medium- and long-term follow-ups.

Qualidade do Sono Associada ao Nível Habitual de Atividade Física e Sistema Nervoso Autônomo de Fumantes / Sleep Quality Associated with Habitual Physical Activity Level and Autonomic Nervous System of Smokers

Resumo Fundamento Poucos estudos já examinaram a relação do nível habitual de atividade física e a modulação do sistema nervoso autônomo (SNA) na qualidade do sono de fumantes. Objetivos O objetivo deste estudo foi identificar alterações na qualidade do sono de fumantes e sua relação com nível habitual de atividade física e modulação do SNA. Métodos Um total de 42 fumantes foram divididos em dois grupos de acordo com o 50º percentil de atividade física de moderada a vigorosa (AFMV). A qualidade do sono foi avaliada utilizando-se o Mini-Sleep Questionnaire (mini questionário do sono), e a modulação do SNA foi avaliada por índices de variabilidade de frequência cardíaca (VFC). Para a análise de possíveis diferenças de média, foi utilizada a análise de covariância (ANCOVA) para ajuste de idade, gênero, composição corporal, maços-ano, betabloqueadores, ansiedade, e depressão, em log base 10, exceto por dados qualitativos, tais como gênero e betabloqueadores. Foram estabelecidas correlações utilizando-se a correlação de postos de Spearman. A significância estatística foi definida em 5%. Resultados Os fumantes que eram menos ativos demonstraram pior qualidade do sono (p=0,048) e insônia (p=0,045). Além disso, o grupo menos ativo apresentou redução na modulação parassimpática [HF (un; p=0,049); RMSSD (ms; p=0,047) e SD1 (ms; p=0,047)] e aumento do índice de LF (un) index (p=0,033) e razão LF/HF (p=0,040). Houve correlação positiva entre a pontuação total no Mini-sleep com o índice de LF (un) (r=0,317, p=0,041) e razão LF/HF (r=0,318, p=0,040) e correlação negativa com o índice de HF (un) (r= -0,322, p=0,038). Conclusões Fumantes com baixo nível de atividade física habitual apresentaram baixa qualidade do sono e alterações na modulação do sistema nervoso autônomo. (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0)

Abstract Background Few studies have examined the relationship of one's habitual physical activity level and autonomic nervous system (ANS) modulation on sleep quality in smokers. Objective The aim of this study was to identify changes in the sleep quality of smokers and its relation with their habitual physical activity level and ANS modulation. Methods Forty-two smokers were divided into two groups according to the 50th percentile of the moderate-to-vigorous physical activity (MVPA). Sleep quality was assessed using the Mini-sleep Questionnaire, and ANS modulation was assessed by indices of heart rate variability (HRV). To examine the possible mean differences, the analysis of covariance (ANCOVA) was used, adjusted for age, sex, body composition, pack-years, beta-blockers, anxiety, and depression in log base 10, not including qualitative data, such as sex and beta-blockers. Correlations were made by using the Spearman rank correlation. The statistical significance was set at 5% Results The smokers who were less active showed poor sleep quality (p=0.048) and insomnia (p=0.045). Furthermore, the less active group presented decreased parasympathetic modulation [HF (un; p=0.049); RMSSD (ms; p=0.047) and SD1 (ms; p=0.047)] and an increased LF (un) index (p=0.033) and LF/HF ratio (p=0.040). A positive correlation between the total Mini-sleep score with LF (un) index (r=0.317, p=0.041) and LF/HF ratio (r=0.318, p=0.040) and negative correlation with HF (un) index (r= -0.322, p=0.038). Conclusions Smokers with lower levels of habitual physical activity showed poor sleep quality and alterations in autonomic nervous system modulation; (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0)

Mucociliary Clearance of Different Respiratory Conditions: A Clinical Study

Abstract Introduction Mucociliary clearance (MCC) is the first line of defense of the pulmonary system. Mucociliary clearance impairment may lead to increased risk of respiratory infections, lung injury, pulmonary repair problems, chronic dysfunctions and progression of respiratory diseases. Objective To characterize the MCC of active and passive smokers and individuals with chronic obstructive pulmonary disease (COPD) and compare the MCC behaviors between men and women of different age groups. Methods Patients with COPD (current smokers and ex-smokers) and apparently healthy individuals (current smokers, passive smokers and nonsmokers) were evaluated. All of the subjects underwent lung function and MCC evaluation (saccharin transport test [STT]). Smokers (with or without COPD) were questioned about the smoking history. Results A total of 418 individuals aged 16 to 82 years old, of both genders, were evaluated. The STT values of active and passive smokers were statistically higher than those of the control group (p < 0.01). Men of the control group had lower values of STT than active smokers (9.7 ± 7.1 and 15.4 ± 10.1 minute, respectively, p < 0.01). In addition, higher MCC velocity was observed in women that are current smokers (11.7 ± 6.8 minute) compared with men (15.4 ± 10.1 minute) in this group (p = 0.01). Among the younger age groups (< 50 years old), only passive smokers presented higher STT in relation to the control group. Conclusion Passive and active smoking are factors that influence negatively the MCC, and passive smokers may present losses of this mechanism at a younger age. Additionally, male smokers present worse MCC than male nonsmokers.

Sleep Quality Associated with Habitual Physical Activity Level and Autonomic Nervous System of Smokers. / Qualidade do Sono Associada ao Nível Habitual de Atividade Física e Sistema Nervoso Autônomo de Fumantes.

BACKGROUND: Few studies have examined the relationship of one's habitual physical activity level and autonomic nervous system (ANS) modulation on sleep quality in smokers. OBJECTIVE: The aim of this study was to identify changes in the sleep quality of smokers and its relation with their habitual physical activity level and ANS modulation. METHODS: Forty-two smokers were divided into two groups according to the 50th percentile of the moderate-to-vigorous physical activity (MVPA). Sleep quality was assessed using the Mini-sleep Questionnaire, and ANS modulation was assessed by indices of heart rate variability (HRV). To examine the possible mean differences, the analysis of covariance (ANCOVA) was used, adjusted for age, sex, body composition, pack-years, beta-blockers, anxiety, and depression in log base 10, not including qualitative data, such as sex and beta-blockers. Correlations were made by using the Spearman rank correlation. The statistical significance was set at 5. RESULTS: The smokers who were less active showed poor sleep quality (p=0.048) and insomnia (p=0.045). Furthermore, the less active group presented decreased parasympathetic modulation [HF (un; p=0.049); RMSSD (ms; p=0.047) and SD1 (ms; p=0.047)] and an increased LF (un) index (p=0.033) and LF/HF ratio (p=0.040). A positive correlation between the total Mini-sleep score with LF (un) index (r=0.317, p=0.041) and LF/HF ratio (r=0.318, p=0.040) and negative correlation with HF (un) index (r= -0.322, p=0.038). CONCLUSIONS: Smokers with lower levels of habitual physical activity showed poor sleep quality and alterations in autonomic nervous system modulation; (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0).

FUNDAMENTO: Poucos estudos já examinaram a relação do nível habitual de atividade física e a modulação do sistema nervoso autônomo (SNA) na qualidade do sono de fumantes. OBJETIVOS: O objetivo deste estudo foi identificar alterações na qualidade do sono de fumantes e sua relação com nível habitual de atividade física e modulação do SNA. MÉTODOS: Um total de 42 fumantes foram divididos em dois grupos de acordo com o 50º percentil de atividade física de moderada a vigorosa (AFMV). A qualidade do sono foi avaliada utilizando-se o Mini-Sleep Questionnaire (mini questionário do sono), e a modulação do SNA foi avaliada por índices de variabilidade de frequência cardíaca (VFC). Para a análise de possíveis diferenças de média, foi utilizada a análise de covariância (ANCOVA) para ajuste de idade, gênero, composição corporal, maços-ano, betabloqueadores, ansiedade, e depressão, em log base 10, exceto por dados qualitativos, tais como gênero e betabloqueadores. Foram estabelecidas correlações utilizando-se a correlação de postos de Spearman. A significância estatística foi definida em 5%. RESULTADOS: Os fumantes que eram menos ativos demonstraram pior qualidade do sono (p=0,048) e insônia (p=0,045). Além disso, o grupo menos ativo apresentou redução na modulação parassimpática [HF (un; p=0,049); RMSSD (ms; p=0,047) e SD1 (ms; p=0,047)] e aumento do índice de LF (un) index (p=0,033) e razão LF/HF (p=0,040). Houve correlação positiva entre a pontuação total no Mini-sleep com o índice de LF (un) (r=0,317, p=0,041) e razão LF/HF (r=0,318, p=0,040) e correlação negativa com o índice de HF (un) (r= -0,322, p=0,038). CONCLUSÕES: Fumantes com baixo nível de atividade física habitual apresentaram baixa qualidade do sono e alterações na modulação do sistema nervoso autônomo. (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0).

Influência de uma sessão de exercício aeróbico submáximo e máximo sobre o transporte mucociliar e função autonômica em tabagistas / Influencia de una sesión de ejercicio aeróbico submáximo y máximo sobre el transporte mucociliar y la función autonómica en fumadores / Influence of a submaximal and maximal aerobic exercise session on mucociliary clearance and autonomic function in smokers

RESUMO O objetivo do estudo foi avaliar e correlacionar o comportamento da depuração mucociliar e do sistema nervoso autônomo de fumantes após sessões de exercício aeróbico submáximo e máximo. Foram avaliados 25 fumantes e 15 não fumantes, entre 30 e 50 anos. Ambos os grupos foram submetidos ao teste do tempo de trânsito de sacarina (TTS) e variabilidade da frequência cardíaca (VFC) antes e após uma sessão de exercício submáximo (teste de caminhada de seis minutos) e máximo (teste de exercício cardiopulmonar). Teste t pareado ou Wilcoxon foi utilizado para análise intragrupos e o teste t não pareado ou Mann-Whitney para a análise intergrupos. A correlação foi realizada utilizando os coeficientes de Pearson ou Spearman (p <0,05). Houve redução significativa do TTS após exercícios submáximo e máximo em ambos os grupos. Após o exercício submáximo, ambos grupos apresentaram redução significativa do intervalo RR e aumento da FC em comparação ao repouso, no grupo de não fumantes houve reduções significativas nos índices RMSSD, HFms² e SD1. Após o exercício máximo, ambos grupos apresentaram reduções significativas no SDNN, RMSSD, intervalo RR, LF e HF, em ms² e un, SD1 e SD2, além do aumento da FC, LFun e da razão LF/HF. Houve correlação positiva entre TTS e LFms² (r = 0,520, p = 0,008) após o exercício máximo para o grupo de fumantes. Conclui-se que independentemente da intensidade do exercício aeróbio, houve um aumento na depuração mucociliar em fumantes, mas essa alteração parece ser influenciada pelo sistema nervoso autônomo apenas frente o exercício máximo.

RESUMEN El objetivo de este estudio fue evaluar y correlacionar el comportamiento de la depuración mucociliar y del sistema nervioso autónomo de fumadores después de sesiones de ejercicio aeróbico submáximo y máximo. Se evaluaron a 25 fumadores y a 15 no fumadores de entre 30 y 50 años de edad. Ambos grupos se sometieron a la prueba de tiempo de tránsito de sacarina (TTS) y la variabilidad de la frecuencia cardíaca (VFC) antes y después de una sesión de ejercicio submáximo (prueba de caminata de seis minutos) y de ejercicio máximo (prueba de esfuerzo cardiopulmonar). Para el análisis intragrupo se utilizó la prueba t pareada o Wilcoxon, y para el análisis intergrupal, la prueba t no pareada o Mann-Whitney. Para realizar la correlación se utilizaron los coeficientes de Pearson o Spearman (p<0,05). Hubo una reducción significativa en TTS después de ejercicios submáximo y máximo en ambos grupos. Después del ejercicio submáximo, ambos grupos mostraron una reducción significativa en el intervalo RR y un aumento en la FC en comparación con el reposo; en el grupo de no fumadores hubo reducciones significativas en los índices RMSSD, HFms² y SD1. Después del ejercicio máximo, ambos grupos mostraron reducciones significativas en SDNN, RMSSD, intervalo RR, LF y HF, en ms² y un, SD1 y SD2, además de un aumento de FC, LFun y la relación LF/HF. Hubo una correlación positiva entre TTS y LFms² (r=0,520, p=0,008) después del ejercicio máximo para el grupo de fumadores. Se concluye que, de manera independiente a la intensidad del ejercicio aeróbico, hubo un aumento de la depuración mucociliar en los fumadores, pero este cambio parece haber sido influido por el sistema nervioso autónomo solamente en el ejercicio máximo.

ABSTRACT The aim of this study was to evaluate and to correlate the behavior of mucociliary clearance and the autonomic nervous system of smokers after submaximal and maximal aerobic exercise sessions. We evaluated 25 smokers and 15 nonsmokers aged between 30 and 50 years. Both groups were submitted to the saccharin transit time (STT) test and heart rate variability (HRV) before and after a submaximal (six-minute walk test) and maximal (cardiopulmonary test) exercise. Paired t-test or Wilcoxon were used for intragroup analysis and the unpaired t-test or Mann-Whitney for intergroup analysis. The correlation was performed using Pearson or Spearman coefficients (p<0.05). Saccharine transit time reduced significantly after submaximal and maximal exercises in both groups. After the submaximal exercise, both groups presented significant reduction of the RR interval and increased heart rate (HR). In the nonsmoker group there were significant reductions in the RMSSD, HFms² and SD1 indexes. After maximal exercise, both groups showed significant reductions in SDNN, RMSSD, RR, LF and HF interval, in ms² and normalized units, SD1 and SD2, in addition to the increase in HR, LFun, and LF/HF ratio. STT positively correlated with LFms² (r = 0.520, p = 0.008) after the maximal exercise for the smoker group. We concluded, that regardless of the intensity of aerobic exercise, mucociliary clearance increases in smokers, but this alteration seems to be influenced by the autonomic nervous system only during maximum exercise.

Smoking history: relationships with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity in current smokers.

OBJECTIVE: To determine the relationships that smoking history has with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity in current smokers. METHODS: This was a cross-sectional study involving 65 smokers (age range: 18-60 years). On three non-consecutive days, each participant was evaluated in terms of smoking history, pre-existing comorbidities, lung function (by spirometry), peripheral muscle strength (by dynamometry), body composition (by bioelectrical impedance analysis), levels of metabolic/inflammatory markers, and maximum cardiopulmonary capacity (by treadmill exercise test). We evaluated the relationships that smoking history has with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity, using logarithmic transformation of the data and calculating Pearson's correlation coefficient and for partial correlations adjusted for age, gender, body mass index (BMI), and comorbidities. To identify the influence of smoking history on pre-existing comorbidities, we used a logistic regression model adjusted for age, BMI, and duration of smoking. RESULTS: Smoking history correlated significantly, albeit weakly, with triglyceride level (r = 0.317; p = 0.005), monocyte count (r = 0.308; p = 0.013), and waist circumference (r = 0.299; p = 0.017). However, those correlations did not retain their significance in the adjusted analysis. In the logistic regression model, smoking more than 20 cigarettes/day correlated significantly with the presence of metabolic diseases (OR = 0.31; 95% CI: 1.009-1.701; p = 0.043). CONCLUSIONS: In this sample of smokers, smoking history correlated positively with the triglyceride level, the monocyte count, and waist circumference. The prevalence of metabolic disease was highest in those who smoked more than 20 cigarettes/day.

Smoking history: relationships with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity in current smokers / Relação da carga tabágica com marcadores inflamatórios, marcadores metabólicos, composição corporal, força muscular e capacidade cardiorrespiratória em tabagistas

ABSTRACT Objective: To determine the relationships that smoking history has with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity in current smokers. Methods: This was a cross-sectional study involving 65 smokers (age range: 18-60 years). On three non-consecutive days, each participant was evaluated in terms of smoking history, pre-existing comorbidities, lung function (by spirometry), peripheral muscle strength (by dynamometry), body composition (by bioelectrical impedance analysis), levels of metabolic/inflammatory markers, and maximum cardiopulmonary capacity (by treadmill exercise test). We evaluated the relationships that smoking history has with inflammatory markers, metabolic markers, body composition, muscle strength, and cardiopulmonary capacity, using logarithmic transformation of the data and calculating Pearson's correlation coefficient and for partial correlations adjusted for age, gender, body mass index (BMI), and comorbidities. To identify the influence of smoking history on pre-existing comorbidities, we used a logistic regression model adjusted for age, BMI, and duration of smoking. Results: Smoking history correlated significantly, albeit weakly, with triglyceride level (r = 0.317; p = 0.005), monocyte count (r = 0.308; p = 0.013), and waist circumference (r = 0.299; p = 0.017). However, those correlations did not retain their significance in the adjusted analysis. In the logistic regression model, smoking more than 20 cigarettes/day correlated significantly with the presence of metabolic diseases (OR = 0.31; 95% CI: 1.009-1.701; p = 0.043). Conclusions: In this sample of smokers, smoking history correlated positively with the triglyceride level, the monocyte count, and waist circumference. The prevalence of metabolic disease was highest in those who smoked more than 20 cigarettes/day.

RESUMO Objetivo: Verificar a relação da carga tabágica com marcadores inflamatórios, marcadores metabólicos, composição corporal, força muscular e capacidade cardiorrespiratória em tabagistas. Métodos: Estudo transversal com 65 tabagistas de ambos os sexos (idade: 18-60 anos). Todos os participantes foram avaliados em três dias não consecutivos quanto ao histórico de tabagismo, comorbidades pré-existentes, função pulmonar (espirometria), força muscular periférica (dinamometria), composição corporal (bioimpedância), dosagem de marcadores metabólicos e inflamatórios e teste cardiopulmonar em esteira para avaliar a capacidade cardiorrespiratória máxima. Avaliou-se a relação da carga tabágica com marcadores inflamatórios, marcadores metabólicos, composição corporal, força muscular e capacidade cardiorrespiratória com transformação logarítmica através da correlação de Pearson e correlações parciais ajustadas para idade, sexo, índice de massa corpórea (IMC) e comorbidades. A regressão logística com modelo ajustado para idade, IMC e tempo de tabagismo foi utilizada para identificar a influência do histórico de tabagismo sobre as comorbidades pré-existentes. Resultados: Observaram-se correlações positivas fracas somente para dados não ajustados da carga tabágica com nível de triacilglicerol (r = 0,317; p = 0,005), contagem de monócitos (r = 0,308; p = 0,013) e circunferência abdominal (r = 0,299; p = 0,017). No modelo de regressão logística, fumar mais de 20 cigarros/dia correlacionou-se significativamente com a presença de doenças metabólicas (OR = 0,31; IC95%: 1,009-1,701; p = 0,043). Conclusões: Nesta amostra de tabagistas, a carga tabágica se correlacionou positivamente com nível de triacilglicerol, contagem de monócitos e circunferência abdominal. A prevalência de doenças metabólicas foi maior em tabagistas que fumam mais de 20 cigarros/dia.

Impacto da queima da cana-de-açúcar sobre internações hospitalares por doenças respiratórias / The impact of sugarcane burning on hospitalization due to respiratory diseases

Resumo O objetivo deste artigo é avaliar o impacto das emissões da queima da cana-de-açúcar sobre o número de internações hospitalares por doenças respiratórias em uma região canavieira. Registros de internações hospitalares por doenças respiratórias foram adquiridas a partir da base de dados referentes ao sistema de informações hospitalares do sistema único de saúde (SIH-SUS), no período de 28 de março de 2011 a 28 de dezembro de 2012. Níveis de MP10, NO2, O3, temperatura e umidade relativa foram registradas. Modelos de regressão logística foram construídos para analisar a associação entre o número total de internações, poluentes atmosféricos e variáveis meteorológicas. Foram registradas 1.179 internações, dentre elas a pneumonia mostrou aumento significativo no período de queima (p = 0,005). Neste mesmo período observou-se que o cluster MP10 e NO2 influenciou 67,9% (IC95%: 11,111-2,537), seguido do cluster MP10, NO2, O3 e temperatura que influenciou 91,1% (IC95%: 1,116; 3,271) no número total de internações. Durante o período de queima houve maior número de internações por doenças respiratórias, principalmente de pneumonia, quando foi observada a influência dos poluentes e temperatura no processo de adoecimento da população.

Abstract The scope of this article is to evaluate the impact of emissions from sugarcane burning on hospital admission numbers for respiratory diseases in a sugarcane region. Hospital admission records for respiratory diseases were acquired from the database of the Hospital Information System of the Unified Health System (SIH-SUS) in the period from March 28, 2011 to December 28, 2012. Levels of PM10, NO2, O3, Temperature and Relative Humidity were recorded. Logistic regression models were created to analyze the association between the total number of hospitalizations, atmospheric pollutants and meteorological variables. A total of 1,179 hospitalization admissions were recorded, with a significant increase in cases of pneumonia in the burning period (p = 0.005). Likewise, it was observed that the cluster of PM10 and NO2 was influenced 67.9% (95% CI: 11.111-2.537) followed by cluster PM10, NO2, O3 and Temperature that influenced 91.1% (95% CI: 1.116; 3.271) in the total number of hospitalization admissions. During the sugarcane burning period there were more hospitalization admissions due to respiratory tract diseases, mainly pneumonia, where the influence of air pollutants and temperature in the process of illness in the population was detected.

[The impact of sugarcane burning on hospitalization due to respiratory diseases]. / Impacto da queima da cana-de-açúcar sobre internações hospitalares por doenças respiratórias.

The scope of this article is to evaluate the impact of emissions from sugarcane burning on hospital admission numbers for respiratory diseases in a sugarcane region. Hospital admission records for respiratory diseases were acquired from the database of the Hospital Information System of the Unified Health System (SIH-SUS) in the period from March 28, 2011 to December 28, 2012. Levels of PM10, NO2, O3, Temperature and Relative Humidity were recorded. Logistic regression models were created to analyze the association between the total number of hospitalizations, atmospheric pollutants and meteorological variables. A total of 1,179 hospitalization admissions were recorded, with a significant increase in cases of pneumonia in the burning period (p = 0.005). Likewise, it was observed that the cluster of PM10 and NO2 was influenced 67.9% (95% CI: 11.111-2.537) followed by cluster PM10, NO2, O3 and Temperature that influenced 91.1% (95% CI: 1.116; 3.271) in the total number of hospitalization admissions. During the sugarcane burning period there were more hospitalization admissions due to respiratory tract diseases, mainly pneumonia, where the influence of air pollutants and temperature in the process of illness in the population was detected.

O objetivo deste artigo é avaliar o impacto das emissões da queima da cana-de-açúcar sobre o número de internações hospitalares por doenças respiratórias em uma região canavieira. Registros de internações hospitalares por doenças respiratórias foram adquiridas a partir da base de dados referentes ao sistema de informações hospitalares do sistema único de saúde (SIH-SUS), no período de 28 de março de 2011 a 28 de dezembro de 2012. Níveis de MP10, NO2, O3, temperatura e umidade relativa foram registradas. Modelos de regressão logística foram construídos para analisar a associação entre o número total de internações, poluentes atmosféricos e variáveis meteorológicas. Foram registradas 1.179 internações, dentre elas a pneumonia mostrou aumento significativo no período de queima (p = 0,005). Neste mesmo período observou-se que o cluster MP10 e NO2 influenciou 67,9% (IC95%: 11,111-2,537), seguido do cluster MP10, NO2, O3 e temperatura que influenciou 91,1% (IC95%: 1,116; 3,271) no número total de internações. Durante o período de queima houve maior número de internações por doenças respiratórias, principalmente de pneumonia, quando foi observada a influência dos poluentes e temperatura no processo de adoecimento da população.

The perceptions of physical therapists about facilitators and challenges in the use of different tools for resistance training in COPD patients: a mixed-method study / Percepção de fisioterapeutas sobre facilitadores e barreiras no uso de diferentes ferramentas para treinamento resistido em pacientes com DPOC: estudo de método mistos / Percepción de fisioterapeutas sobre facilitadores y barreras en el uso de diferentes herramientas de entrenamiento de resistencia en pacientes con EPOC: estudio de método mixto

ABSTRACT This study sought to quantify and qualitatively analyze the perception of physical therapists about facilitators and the challenges in the use of different types of tools for resistance training in chronic obstructive pulmonary disease (COPD) patients. This was a mixed-model study with qualitative analysis developed in a rehabilitation center. Six physical therapists who performed a randomized clinical trial were interviewed. The protocol consisted of the evaluation of three types of resistance training: elastic tubes, elastic bands, and training with conventional weight machines. After completion of the randomized trial, therapists were invited to participate in a focus group to collect qualitative data. Physical therapists also answered a quantitative questionnaire containing closed questions. The main outcome measures were the opinion of physical therapists about the advantages and disadvantages in clinical practice of each of the analyzed tools. The focus group analysis resulted in eight themes: Insecurities regarding load and handling tools, implementation of home-based treatment, improvements of tools, advantages and disadvantages of tools, incidence of injuries with elastic tools, patient's preferences, and particularities of the tools. Physical therapists pointed out different challenges and facilitators for resistance training. Characteristics of the tools such as costs, portability, handling and practicality were cited as factors that influence clinical practice. In the quantitative analysis, no differences were observed when comparing the scores of each instrument. The three tools analyzed are applicable and feasible in the clinical practice of physical therapists; moreover, they present different characteristics and particularities that should be considered, such as cost, clinical applicability, portability and perception of the patient and therapists.

RESUMO O objetivo do estudo foi quantificar e analisar qualitativamente a percepção de fisioterapeutas sobre facilitadores e barreiras no uso de diferentes ferramentas para treinamento resistido em pacientes com doença pulmonar obstrutiva crônica (DPOC). O método utilizado foi desenvolvido em um centro de reabilitação. Seis fisioterapeutas que participaram como terapeutas de um ensaio clínico randomizado foram entrevistados. O protocolo consistiu na avaliação de três ferramentas para treinamento resistido: tubos elásticos, bandas elásticas e treinamento convencional com equipamentos de musculação. Depois da finalização do ensaio clínico randomizado, os fisioterapeutas foram convidados a participar de um grupo focal para análise qualitativa e responder questionário fechado para análise quantitativa. Os profissionais opinaram sobre vantagens e desvantagens de cada uma das três ferramentas na prática clínica. A análise do grupo focal resultou em oito temas: insegurança em relação à carga e manuseio das ferramentas; implementação de tratamento domiciliar; melhorias para ferramentas; vantagens e desvantagens das ferramentas; incidência de lesões com ferramentas elásticas; preferência dos pacientes; e particularidades de cada ferramenta. Fisioterapeutas apontaram diferentes barreiras e facilitadores para o treinamento resistido. Características das ferramentas - como custo, portabilidade, manuseio, praticidade e percepção do paciente e fisioterapeuta - foram citadas como fatores que influenciam a prática clínica. Na análise quantitativa, nenhuma diferença foi observada quando comparados os escores para cada instrumento. As três ferramentas são aplicáveis na prática clínica do fisioterapeuta. Adicionalmente, as características e particularidades de cada uma delas devem ser consideradas.

RESUMEN El objetivo del estudio fue cuantificar y analizar cualitativamente la percepción de fisioterapeutas sobre facilitadores y barreras en el uso de diferentes herramientas de entrenamiento de resistencia en pacientes con enfermedad pulmonar obstructiva crónica (EPOC). El método utilizado fue desarrollado en un centro de rehabilitación. Seis profesionales que participaron como terapeutas en un ensayo clínico aleatorizado fueron entrevistados. El protocolo consistió en la evaluación de tres herramientas de entrenamiento de resistencia: tubos elásticos, bandas elásticas y entrenamiento convencional con equipo de entrenamiento con pesas. Después del ensayo clínico aleatorizado, se invitó a los fisioterapeutas a participar en un grupo focal para análisis cualitativo y a responder un cuestionario cerrado para análisis cuantitativo. Los profesionales opinaron sobre las ventajas y desventajas de cada una de las tres herramientas en la práctica clínica. El análisis del grupo resultó en ocho temas: falta de fiabilidad en lo referente a la carga y al manejo de las herramientas; puesta en práctica del tratamiento domiciliario; mejoras en las herramientas; ventajas y desventajas de las herramientas; incidencia de lesiones con las herramientas elásticas; preferencia de los pacientes; particularidades de cada herramienta. Los fisioterapeutas señalaron diferentes barreras y facilitadores para el entrenamiento de resistencia. Características de la herramienta - como costo, portabilidad, manejo, practicidad y percepción del paciente y del fisioterapeuta - fueron mencionadas como factores que influyen en la práctica clínica. En el análisis cuantitativo no se observaron diferencias de puntaje entre los instrumentos. Las tres herramientas son aplicables en la práctica clínica del fisioterapeuta. Además, se deben considerar las características y particularidades de cada una de ellas.

Burnt sugarcane harvesting is associated with rhinitis symptoms and inflammatory markers / Colheita de cana-de-açúcar queimada está associada a sintomas de rinite e marcadores inflamatórios

Abstract Introduction: Burnt sugarcane harvesting requires intense physical exertion in an environment of high temperature and exposure to particulate matter. Objective: To evaluate the effects of burnt sugarcane harvesting on rhinitis symptoms and inflammatory markers in sugarcane workers. Methods: A total of 32 male sugarcane workers were evaluated with questionnaire for rhinitis symptoms, and for inflammatory markers on peripheral blood and nasal lavage, in the non-harvesting, and 3 and 6 months into the sugarcane harvesting period. Weather data and particulate matter fine concentrations were measured in the same day. Results: The particulate matter concentrations in sugarcane harvesting were 27 (23-33 µg/m3), 112 (96-122 µg/m3), and 63 (17-263 µg/m3); 24 h temperatures were 32.6 (25.4-37.4 ºC), 32.3 (26.7-36.7 ºC) and 29.7 (24.1-34.0 ºC) and relative humidities were 45.4 (35.0-59.7%), 47.9 (39.1-63.0%), and 59.9 (34.7-63.2%) in the non-harvesting period, three and 6 months of the harvesting period. The age was 37.4 ± 10.9 years. The prevalence of rhinitis symptoms was significantly higher at 3 months of the harvesting period (53.4%), compared to non-harvesting period (26.7%; p = 0.039) and at 6 months into the harvesting period (20%; p = 0.006). Concentrations of interleukin 6 (IL-6) in nasal lavage increased after 3 months of the harvesting period compared to the non-harvesting period (p = 0.012). The presence of rhinitis symptoms, after 3 months of the harvesting period, was directly associated with blood eosinophils and inversely associated with neutrophils. Conclusions: After 3 months of work in burnt sugarcane harvesting the prevalence of rhinitis symptoms and IL-6 in nasal lavage increased. Furthermore, eosinophil counts were directly associated with the rhinitis symptoms in the period of higher concentration of particulate matter.

Resumo Introdução: A colheita de cana-de-açúcar queimada requer esforço físico intenso em um ambiente com altas temperaturas e exposição a material particulado. Objetivo: Avaliar os efeitos da colheita de cana-de-açúcar queimada nos sintomas de rinite e marcadores inflamatórios de cortadores de cana-de-açúcar. Método: Foram avaliados 32 cortadores de cana-de-açúcar do sexo masculino por meio de um questionário para sintomas de rinite, e marcadores inflamatórios em sangue periférico e lavado nasal, no período de entressafra, e em 3 e 6 meses após o início da colheita da cana-de-açúcar. Os dados climáticos e as concentrações de material particulado fino foram medidos no mesmo dia. Resultados: O material particulado fino na entressafra e em 3 e 6 meses de safra foi 27 (23-33 µg/m3), 112 (96-122 µg/m3) e 63 (17-263 µg/m3), respectivamente; a temperatura de 24 horas foi 32,6 (25,4º-37,4ºC), 32,3 (26,7º-36,7ºC) e 29,7 (24,1º-340ºC) e a umidade relativa do ar foi 45,4 (35,0%-59,7%), 47,9 (39,1%-63,0%), e 59,9 (34,7%-63,2%), na entressafra, 3 e 6 meses após o início da colheita. A idade foi de 37,4 ± 10,9 anos. A prevalência de sintomas de rinite foi significativamente maior em 3 meses da S (53,4%), comparado com a entressafra (26,7%; p = 0,039) e 6 meses da safra (20%; p = 0,006). As concentrações de interleucina 6 (IL-6) no lavado nasal aumentaram após 3 meses do início da colheita comparado com a entressafra (p = 0,012). A presença de sintomas de rinite, após 3 meses do início da colheita, foi diretamente associada com eosinófilos e inversamente associada com neutrófilos. Conclusões: Após 3 meses do início da colheita da cana-de-açúcar queimada, houve aumento na prevalência de sintomas de rinite e IL-6 em LN. Além disso, as contagens de eosinófilos foram diretamente associadas aos sintomas de rinite no período de maior concentração de material particulado.

Burnt sugarcane harvesting is associated with rhinitis symptoms and inflammatory markers.

INTRODUCTION: Burnt sugarcane harvesting requires intense physical exertion in an environment of high temperature and exposure to particulate matter. OBJECTIVE: To evaluate the effects of burnt sugarcane harvesting on rhinitis symptoms and inflammatory markers in sugarcane workers. METHODS: A total of 32 male sugarcane workers were evaluated with questionnaire for rhinitis symptoms, and for inflammatory markers on peripheral blood and nasal lavage, in the non-harvesting, and 3 and 6 months into the sugarcane harvesting period. Weather data and particulate matter fine concentrations were measured in the same day. RESULTS: The particulate matter concentrations in sugarcane harvesting were 27 (23-33µg/m3), 112 (96-122µg/m3), and 63 (17-263µg/m3); 24h temperatures were 32.6 (25.4-37.4°C), 32.3 (26.7-36.7°C) and 29.7 (24.1-34.0°C) and relative humidities were 45.4 (35.0-59.7%), 47.9 (39.1-63.0%), and 59.9 (34.7-63.2%) in the non-harvesting period, three and 6 months of the harvesting period. The age was 37.4±10.9 years. The prevalence of rhinitis symptoms was significantly higher at 3 months of the harvesting period (53.4%), compared to non-harvesting period (26.7%; p=0.039) and at 6 months into the harvesting period (20%; p=0.006). Concentrations of interleukin 6 (IL-6) in nasal lavage increased after 3 months of the harvesting period compared to the non-harvesting period (p=0.012). The presence of rhinitis symptoms, after 3 months of the harvesting period, was directly associated with blood eosinophils and inversely associated with neutrophils. CONCLUSIONS: After 3 months of work in burnt sugarcane harvesting the prevalence of rhinitis symptoms and IL-6 in nasal lavage increased. Furthermore, eosinophil counts were directly associated with the rhinitis symptoms in the period of higher concentration of particulate matter.

Influência de variáveis espirométricas e transporte mucociliar na funcionalidade de tabagistas leves / Influence of spirometric variables and mucociliary transport on the functionality of light smokers

Introdução: O tabagismo provoca efeitos deletérios a saúde afetando o estado de saúde geral do indivíduo. Neste contexto, torna-se indispensável à avaliação da influência do fumo nas variáveis respiratórias e na capacidade funcional de tabagistas. Objetivo: Analisar a influência de variáveis espirométricas na capacidade de exercício de indivíduos tabagistas. Métodos: Estudo transversal com 78 indivíduos tabagistas, idade entre 40 e 60 anos, no qual foram avaliadas a função pulmonar (espirometria), a capacidade funcional (teste de caminhada de seis minutos-TC6) e a transportabilidade mucociliar nasal (teste do tempo de transporte da sacarina-TTS). Resultados: As variáveis espirométricas apresentaram correlação positiva significativa com o TC6 e o TTS não apresentou correlação com o TC6. Conclusão: A função pulmonar tem correlação com a capacidade funcional, no entanto o TTS não apresenta essa correlação em indivíduos tabagistas leves.

Introduction: Smoking causes deleterious health effects affecting the general health of the individual. In this context, it is essential to evaluate the influence of smoking on respiratory variables and on the functional capacity of smokers. Objective: To analyze the influence of spirometry variables on the exercise capacity of smokers. Methods: A cross-sectional study with 78 smokers, age between 40 and 60 years old, in which pulmonary function (spirometry), functional capacity (six-minute walk test ­ 6MWT) and nasal mucociliary transportability (Saccharin Transport Time Test ­ STT) were evaluated. Results: Spirometric variables had a significant postive correlation with the 6MWT and the STT did not present a correlation with the 6MWT. Conclusion: Pulmonary function correlated with functional capacity, however STT did not present this correlation in light smokers.

Effects of exercise on secretion transport, inflammation, and quality of life in patients with noncystic fibrosis bronchiectasis: Protocol for a randomized controlled trial.

BACKGROUND: Bronchiectasis is characterized by pathological and irreversible bronchial dilatation caused by the inefficient mucus and microorganism clearance and progression of inflammatory processes. The most frequent characteristic is the increase in bronchial mucus production resulting in slower transport and damage to the mucociliary transport. AIMS: To evaluate the effects of exercise on mucus transport, inflammation, and resistance of the respiratory and autonomic nervous systems and subsequent effects on quality of life in patients with bronchiectasis who are enrolled in a pulmonary rehabilitation program. METHODS: Sixty subjects of both sexes between 18 and 60 years (30 volunteers with clinically stable bronchiectasis and 30 healthy volunteers) will be included. Participants with chronic obstructive pulmonary disease, decompensated cardiovascular or metabolic diseases, neuromuscular and musculoskeletal diseases, and active smokers will be excluded. Volunteers will be randomly allocated to the pulmonary rehabilitation or control groups. The primary outcomes will be nasal transport time as evaluated by nasal saccharin transport time, analysis of nasal lavage, enzyme immunoassay of exhaled expiration, and analysis of the mucus properties. The secondary outcomes will include pulmonary function tests, impulse oscillometry, heart rate variability analysis, and quality of life questionnaires. DISCUSSION: In addition to the benefits for patients already described in the literature, the additional benefit of mucus removal may contribute to optimizing treatments and better control of the disease. CONCLUSION: This protocol could provide new information about the unclear mechanisms regarding exercise to aid in the removal of secretions.