• Journal of Preventive Medicine and Public Health
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• 제51권3호
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• pp.130-139
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• 2018

Objectives: Air pollution is a growing concern in Korea because of transboundary air pollution from mainland China. A panel study was conducted to clarify the effects of air pollution on respiratory symptoms and health-related quality of life (HR-QoL) in outpatients with and without chronic obstructive pulmonary disease (COPD) in Korea. Methods: Patients filled out a questionnaire including self-reported HR-QoL in February and were followed up in May and July. The study was conducted from 2013 to 2015, with different participants each year. Air quality parameters were applied in a generalized estimating equation as independent variables to predict factors affecting HR-QoL. Results: Lower physical fitness scores were associated with Asian sand dust events. Daily activity scores were worse when there were high concentrations of particulate matter (PM) less than $10{\mu}m$ in diameter ($PM_{10}$). Lower social functioning scores were associated with high PM less than $2.5{\mu}m$ in diameter and nitrogen dioxide ($NO_2$) concentrations. High $NO_2$ concentrations also showed a significant association with mental health scores. Weather-related cough was prevalent when $PM_{10}$, $NO_2$, or ozone ($O_3$) concentrations were high, regardless of COPD severity. High $PM_{10}$ concentrations were associated with worsened wheezing, particularly in COPD patients. Conclusions: The results suggest that PM, $NO_2$, and $O_3$ cause respiratory symptoms leading to HR-QoL deterioration. While some adverse effects of air pollution appeared to occur regardless of COPD, others occurred more often and more intensely in COPD patients. The public sector, therefore, needs to consider tailoring air pollution countermeasures to people with different conditions to minimize adverse health effects.

• Tuberculosis and Respiratory Diseases
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• 제85권2호
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• pp.137-146
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• 2022

Background: Farinelli breathing (FB) exercise is a typical breathing exercise used by singers. This study aimed to compare effects of FB exercise and diaphragmatic breathing (DB) exercise on respiratory function and symptoms in patients with chronic obstructive pulmonary disease (COPD). Methods: Sixteen patients aged 51-80 years with mild or moderate COPD were recruited for this study. They were divided into two groups: DB group (n=8) and FB group (n=8). Both groups received complete breathing exercise training five times per week for 8 weeks. Their respiratory functions, COPD symptoms, cytokine levels, and oxidative stress variables were analyzed during pre- and post-tests. Dependent variables were compared between pre- and post-tests using paired t-tests. An independent t-test was used to compare variables between the groups. Differences were considered significant at p<0.05. Results: The maximal expiratory pressure (MEP), maximum oxygen consumption (VO₂max), and COPD Assessment Test (CAT) scores changed significantly in the DB group after the 8-week intervention compared to those at pre-test, whereas force vital capacity, forced expiratory volume in the first second, maximum voluntary ventilation, maximal inspiratory pressure (MIP), MEP, VO₂max, CAT score, tumor necrosis factor-α, and malondialdehyde level changed significantly in the FB group at post-test compared to those at pre-test. Moreover, both MIP and MEP in the FB group were significantly higher than those in the DB group. Conclusion: FB exercise improved respiratory functions and COPD symptoms of patients with COPD. It might be an alternative breathing exercise in pulmonary rehabilitation programs for patients with COPD.

• Journal of Korean Biological Nursing Science
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• 제25권3호
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• pp.172-182
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• 2023

Purpose: This study investigated the differences in physical function, self-efficacy (SE), and health-related quality of life (HRQoL) categorized by disease severity in community-dwelling patients with chronic obstructive pulmonary disease (COPD). Methods: This cross-sectional study included 182 patients with COPD selected from the pulmonology outpatient department of a tertiary hospital. Disease severity was measured using forced expiratory volume in 1 second (FEV1). Physical function, SE, and HRQoL were measured with the six-minute walking distance, Pulmonary Rehabilitation Adapted Index of Self-Efficacy (PRAISE), and St. George's Respiratory Questionnaire (SGRQ). Disease duration, FEV1, and 12-month history of exacerbations were obtained from medical records. Patients were categorized by Global Initiative for Chronic Obstructive Lung Disease (GOLD) category. Data were analyzed using the χ² test, and one-way ANOVA. Results: Most of the participants were male and nonsmokers. The disease duration was 10.76 ± 10.03 years, the mean FEV1% was 62.13 ± 22.80, and 70.3% of the participants were in GOLD category 2 (moderate) or milder. Half of the participants reported modified Medical Research Council scores ≥ 2. Patients in GOLD categories 1 and 3 (mild and severe) exhibited significantly higher PRAISE scores than those in the other groups (F = 8.23, p < .001). The total SGRQ scores were highest in GOLD 4 (very severe), indicating the lowest HRQoL. Significant differences were identified among GOLD 1, GOLD 2 and 3, and GOLD 4 (F = 9.92, p < .001). Conclusion: We identified potentially useful variables to comprehensively assess disease severity and tailor management strategies, including airflow limitation, and to determine the consequences of COPD from patients' perspectives.

• 한국노년학
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• 제31권3호
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• pp.607-621
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• 2011

목적: 본 연구는 만성폐쇄성폐질환(Chronic Obstructive Pulmonary Disease, COPD) 환자의 신체활동, 수면 장애, 건강관련 삶의 질 간의 관련성을 검정하기 위해 수행되었다. 방법: 본 연구는 COPD 환자의 증상관리중재연구의 사전 조사 자료를 이용한 서술적 조사연구이다. 성 조지 호흡기계 설문지, 국제신체활동 설문지, 만성폐쇄성 폐질환과 천식의 수면영향 설문지를 이용하여 6개의 병원에서 자료수집이 이루어 졌으며, 총 245명이 분석에 포함되었다. 대상자의 특성, 대상자의 신체활동, 수면장애, 건강관련 삶의 질의 수준 및 연구 개념간의 관련성을 확인하기 위해 서술적 통계, ANOVA, Pearson 상관분석, 회귀분석이 SPSS WIN 18.0 프로그램을 통해 이루어졌다. 결과: 대상자의 건강관련 삶의 질과 수면장애의 평균(표준편차)은 각각 36.04(19.43)과 14.33(6.20)이었다. 대상자의 32%가 비활동적인 것으로 나타났다. 다변량적 접근에서 수면장애가 심하고(β=.27), FEV1 % predicted가 낮고(β=-.23), 신체활동량이 적고(β=-.19), 가정의 총수입이 낮고(β=-.16), COPD 진단을 받은 지 5년 이상(β=.14)이 된 대상자들에게서 유의하게 삶의 질이 낮았다(R²=.34). 결론: 본 연구결과는 COPD 환자의 삶의 질 향상을 위한 중재방안으로 수면의 질 향상과 신체활동량 증진이 효과적일 수 있음을 제시하며 이들 중재프로그램의 효과검증이 추후 필요하다 하겠다.

• Tuberculosis and Respiratory Diseases
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• 제67권6호
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• pp.536-544
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• 2009

Background: A combination of salmeterol and fluticasone propionate (SFC) and tiotropium bromide (TIO) is commonly prescribed for COPD patients but there is little data on their effectiveness, particularly in COPD patients with bronchial hyperresponsiveness. This study compared the spirometric improvement based on the change in $FEV_1$, $FEV_1$/FVC, and IC as well as the clinical outcomes of the therapeutic strategies with SFC and TIO versus the individual components in patients with severe COPD and bronchial hyperresponsiveness. Methods: This study examined the spirometric data and clinical outcomes of 214 patients with COPD and hyperresponsiveness, who were divided into three groups according to the therapeutic regimen (TIO only, SFC only, and a triple therapy regimen). Results: All regimen groups showed early improvement in the $FEV_1$ and IC (at 3- and 6 months after treatment). However, long-term beneficial effects were observed only in the SFC group (at 24 months after treatment). However, these beneficial effects decreased after a 36-month follow up. In all spirometric results, the 12-, 24-, and 36-months data showed a similar degree of improvement in the three groups. The triple therapy group showed higher St. George's Respiratory Questionnaire scores and lower acute exacerbations and hospitalization. Conclusion: SFC can be a more important component in the pharmacological treatment of severe COPD patients with hyperresponsiveness than TIO, particularly in the spirometric and clinical outcomes.

• 한국학교ㆍ지역보건교육학회지
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• 제20권1호
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• pp.15-27
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• 2019

Objective: Patients with COPD have a lower overall quality of life than normal people. If patients with COPD do not regularly perform physical activities, their exercise capacity is reduced. It could lead to muscle loss, and negatively affect their general physical, social, and psycho-social status. The purpose of this study was to examine association with physical activity, sedentary life time and health-related quality of life in patients with COPD. Method: Of the total of 22,948 participants surveyed in Korean National Health and Nutrition Examination Survey (KNHANES 2013-2015), 8,626 participants were used for this study. Of these, under 40 years, over 80 years, missing values and abnormal values were excluded. Study variables included physical activity level, sedentary time and health-related quality of life variables. The physical activity level assessment tool was measured using International Physical Activity Questionnaire (IPAQ). Sedentary time referred to the amount of sitting time without moving the body. EQ-5D (Euro Quality of Life-5 Dimensions) was used as an index of health-related quality of life. Control variables were age, gender, income level, education level, marital status, comorbidity, smoking, BMI, cough, sputum, COPD severity. For this study, descriptive analysis, T-test, ANOVA and multivariate regression analysis were performed. Results: Of the 1,092 patients with COPD, 76.1% (n=831) were male and 23.9% (n=261) were female, while 39.0% (n=2,939) were male and 61.0% (n=4,595) were female in the comparison group without COPD. The COPD group with high level of physical activity showed a high level of EQ-5D scores ($0.9349{\pm}0.11$, p <0.001). Among patients with COPD, after adjusting for control variables, physical activity and sedentary time (physical activity level, Β=0.047, p <.001), (sedentary time, Β=-0.017, p <.05) were associated with health-related quality of life. Conclusion: Patients with COPD have a higher quality of life as their physical activity increases and the quality of life decreases as the time spent sitting increases. This study suggests that public health experts should consider improving COPD patient physical activity.

• Journal of Korean Biological Nursing Science
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• 제19권1호
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• pp.38-47
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• 2017

Purpose: This study was undertaken to examine the relationship between airflow obstruction and subjective health status reported by stable patients with chronic obstructive pulmonary disease (COPD) residing in the community. Methods: A cross-sectional descriptive study was conducted with 78 stable COPD patients aged 69.7 years old on average and selected by a convenient sampling from an outpatient department of pulmonology in tertiary hospitals. They completed a constructed questionnaire including general characteristics, smoking history, dyspnea by modified medical research council (mMRC) scale, and health status by COPD assessment test (CAT). Anthropometric measurements were performed for body mass index (BMI) and pulse oxymetry for $O_2$ saturation (Sat $O_2$). Medical records were reviewed to obtain disease-related characteristics including duration of the disease, cardiovascular comorbidity, and forced expiratory volume in 1 second ($FEV_1$). Data were analyzed using PASW statistics 20.0. Results: Mean $FEV_1%$ and CAT scores were 55.11% and 17.73, respectively. Those in the lower stage of mMRC showed significantly higher $FEV_1$ and lower CAT. $FEV_1$ and CAT showed significant negative correlations; age and BMI with $FEV_1$, and Sat $O_2$ with CAT. Conclusion: The findings suggest that the less airway obstruction was, the better health status was, and provide the support for using subjective measures in clinical practices for COPD patients.

• 한국산학기술학회논문지
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• 제10권8호
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• pp.2134-2140
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• 2009

본 연구는 만성 폐쇄성 폐질환자의 주관적인 호흡곤란 정도 및 건강관련 삶의 질 정도의 측정 필요성을 확인하고, 객관적인 지표인 폐기능과의 관련성을 규명한 서술적 조사연구로, 질문지 작성과 폐기능 검사를 실시하여 조사하였다. FEV1에 따라 분류한 질병의 중증도에서 중등증과 중증 대상자가 경증 대상자에 비해 호흡곤란이 심하며 (BDI F=5.452, p=.007; MRC F=4.925, p=.011), 중증 대상자가 경증 대상자에 비해 건강관련 삶의 질이 낮았다 (F=3.778, p=.030). FEV1과 주관적 호흡곤란 및 건강관련 삶의 질의 상관성(BDI r=.471; MRC r=-.403; SGRQ r=-.476)은 낮았으나 주관적 호흡곤란과 건강관련 삶의 질과의 상관성(BDI r=-.752; MRC r=.645)은 높았다. 또한 질병의 중증도가 중등증과 중증 대상자들에서는 FEV1과 주관적 호흡곤란 및 건강관련 삶의 질의 상관성은 없었으나 주관적 호흡곤란과 건강관련 삶의 질은 역시 높은 상관성(BDI r=-.719; MRC r=.607)을 보였으며, 특히 BDI는 MRC보다 건강관련 삶의 질과의 상관성이 높았다. 이상의 결과로 임상에서 만성 폐쇄성 폐질환자의 상태를 평가할 때 객관적인 폐기능 검사와 함께 BDI로 주관적 호흡곤란을 측정함으로써 만성 폐쇄성 폐질환자의 건강관련 삶의 질을 파악할 수 있을 것이다.

• Clinical Nutrition Research
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• 제11권1호
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• pp.62-73
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• 2022

An insufficient intake of magnesium may be associated with the development of chronic obstructive pulmonary disease (COPD). We aimed to determine the relationship between health related quality of life (QoL), anthropometric indices and nutritional status with dietary magnesium intake in COPD patients. Sixty-one COPD patients participated in this cross-sectional study. QoL and nutritional status were assessed. Furthermore, body composition, calf circumference, and muscle strength were measured; equations were used to calculate fat-free mass index, body mass index, and muscle mass value. Dietary magnesium intake was assessed by three 24-hours recalls and magnesium intake was categorized as ≤ 188.08 mg/day (A group) and > 188.08 mg/day (B group). The χ², independent-sample t-test and Mann-Whitney test were used for statistical analysis. The p values less than 0.05 were considered significant. Of QoL assessments the total and impact mean scores of St. George's respiratory questionnaire in the B group were significantly lower than the means of the A group (p value = 0.007 and 0.005, respectively). The instrumental activity of daily living score was significantly improved in patients with higher consumption of dietary magnesium (p = 0.02). Participants had a significantly lower mean score of patient-generated subjective global assessment in the B group compared to the A group (p = 0.003). Higher intake of dietary magnesium can lead to improve QoL and nutrition status.

• Tuberculosis and Respiratory Diseases
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• 제69권3호
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• pp.171-176
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• 2010

Background: The object of this study was to assess the validity and reliability of the Korean versions of chronic obstructive pulmonary disease assessment test (CAT) and Dyspnea-12 Questionnaire for patients with chronic pulmonary obstructive disease (COPD). Methods: For the 127 COPD patients, we obtained the Korean versions of the 3 questionnaires being tested: St George's Respiratory Questionnaire (SGRQ), CAT, and Dyspnea-12 with spirometric measurements. To assess the validity of CAT and Dyspnea-12, their correlation with SGRQ was evaluated. To assess the reliability of CAT and Dyspnea-12, Cronbach's alpha coefficient was evaluated. Results: The mean age of patient participants was $68.6{\pm}7.5$ years; 97.6% were male. The SGRQ score was correlated with the scores of the Korean version of CAT (r=0.71, p<0.0001) and Dyspnea-12 (r=0.73, p<0.0001). The Cronbach's alpha coefficient for the CAT and Dyspnea-12 were 0.77 and 0.78, respectively. Conclusion: The Korean versions of CAT and Dyspnea-12 were shown to be valid and reliable for the Korean COPD patients.