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      Self-reported daily walking time in COPD: relationship with relevant clinical and functional characteristics

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          Abstract

          Background

          Quantifying physical activity in chronic obstructive pulmonary disease (COPD) is important as physical inactivity is related to poor health outcomes. This study analyzed the relationship between patients’ self-reported daily walking time and relevant characteristics related to COPD severity.

          Methods

          Pooled analysis was performed on data from four observational studies on which daily walking time was gathered from a personal interview. Patients were classified as physically inactive if walking time was <30 min/day. Walking times were described and compared according to several markers of disease severity.

          Results

          The mean daily walking time of 5,969 patients was 66 (standard deviation [SD] 47) min/day; 893 (15%) patients were inactive. A linear dose–response relationship was observed between walking time and the modified Medical Research Council (mMRC) dyspnea score, admissions, COPD assessment test (CAT), body mass index, airway obstruction, dyspnea, exacerbation (BODEx) index, and Charlson index ( P<0.001). Daily walking times were lower in patients classified as Global Initiative for Chronic Obstructive Lung Disease (GOLD) B and D ( P<0.001). Often, inactive patients had mMRC or Charlson index >3, post-bronchodilator forced expiratory volume in the first second <30% predicted, at least one hospitalization for COPD, classified as GOLD B or D, BODEx >4, and CAT score >30.

          Conclusion

          Lower self-reported walking times are related to worse markers of disease severity in COPD.

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          Most cited references 30

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          Standards for the diagnosis and treatment of patients with COPD: a summary of the ATS/ERS position paper.

           W MacNee,  ,  B Celli (2004)
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            Characteristics of physical activities in daily life in chronic obstructive pulmonary disease.

            Quantification of physical activities in daily life in patients with chronic obstructive pulmonary disease has increasing clinical interest. However, detailed comparison with healthy subjects is not available. Furthermore, it is unknown whether time spent actively during daily life is related to lung function, muscle force, or maximal and functional exercise capacity. We assessed physical activities and movement intensity with the DynaPort activity monitor in 50 patients (age 64 +/- 7 years; FEV1 43 +/- 18% predicted) and 25 healthy elderly individuals (age 66 +/- 5 years). Patients showed lower walking time (44 +/- 26 vs. 81 +/- 26 minutes/day), standing time (191 +/- 99 vs. 295 +/- 109 minutes/day), and movement intensity during walking (1.8 +/- 0.3 vs. 2.4 +/- 0.5 m/second2; p < 0.0001 for all), as well as higher sitting time (374 +/- 139 vs. 306 +/- 108 minutes/day; p = 0.04) and lying time (87 +/- 97 vs. 29 +/- 33 minutes/day; p = 0.004). Walking time was highly correlated with the 6-minute walking test (r = 0.76, p < 0.0001) and more modestly to maximal exercise capacity, lung function, and muscle force (0.28 < r < 0.64, p < 0.05). Patients with chronic obstructive pulmonary disease are markedly inactive in daily life. Functional exercise capacity is the strongest correlate of physical activities in daily life.
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              Prevalence of COPD in Spain: impact of undiagnosed COPD on quality of life and daily life activities.

              This study aimed to determine the prevalence of chronic obstructive pulmonary disease (COPD) in Spain and identify the level of undiagnosed disease and its impact on health-related quality of life (HRQL) and activities of daily living (ADL). A population-based sample of 4274 adults aged 40-80 years was surveyed. They were invited to answer a questionnaire and undergo prebrochodilator and postbronchodilator spirometry. COPD was defined as a postbronchodilator FEV(1)/FVC (forced expiratory volume in 1 s/forced vital capacity) ratio of <0.70. For 3802 participants with good-quality postbronchodilator spirometry, the overall prevalence of COPD was 10.2% (95% CI 9.2% to 11.1%) and was higher in men (15.1%) than in women (5.6%). The prevalence of COPD stage II or higher was 4.4% (95%CI; 3.8%-5.1%). The prevalence of COPD increased with age and with cigarette smoking and was higher in those with a low educational level. A previous diagnosis of COPD was reported by only 27% of those with COPD. Diagnosed patients had more severe disease, higher cumulative tobacco consumption and more severely impaired HRQL compared with undiagnosed subjects. However, even patients with undiagnosed COPD stage I+ already showed impairment in HRQL and in some aspects of ADL compared with participants without COPD. The prevalence of COPD in individuals between 40 and 80 years of age in Spain is 10.2% and increases with age, tobacco consumption and lower educational levels. The rate of diagnosised COPD is very high and undiagnosed individuals with COPD already have a significant impairment in HRQL and ADL.
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                Author and article information

                Journal
                Int J Chron Obstruct Pulmon Dis
                Int J Chron Obstruct Pulmon Dis
                International Journal of COPD
                International Journal of Chronic Obstructive Pulmonary Disease
                Dove Medical Press
                1176-9106
                1178-2005
                2017
                13 April 2017
                : 12
                : 1173-1181
                Affiliations
                [1 ]Department of Pneumology, Vall d’Hebron University Hospital
                [2 ]Faculty of Medicine, Autonomous University of Barcelona
                [3 ]Biomedical Research Networking Center Consortium of Respiratory Diseases (CIBERES)
                [4 ]Physical Medicine and Rehabilitation Department, Mataró Hospital
                [5 ]TecnoCampus, College of Health Sciences, University of Pompeu Fabra, Mataró-Maresme, Barcelona
                [6 ]Francia Health Center, Dirección Asistencial Oeste, Madrid
                [7 ]Lucena Health Center I, Lucena, Córdoba
                [8 ]Son Pisà Primary Health Care Center, Palma de Mallorca
                [9 ]Campo de Belchite Health Center, Zaragoza
                [10 ]Primary Care Centre Via Roma
                [11 ]Addiction and Dual Diagnosis Unit, Psychiatry Service, Vall d’Hebron University Hospital
                [12 ]Barcelona Public Health Agency (ASPB), Barcelona
                [13 ]Biomedical Research Networking Center Consortium of Mental Health (CIBERSAM), Madrid
                [14 ]Department of Psychiatry, Autonomous University of Barcelona, Barcelona, Spain
                Author notes
                Correspondence: Marc Miravitlles, Department of Pneumology, Hospital Universitari Vall d’Hebron, Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain, Tel +34 93 274 61 07, Fax +34 93 274 62 08, Email mmiravitlles@ 123456vhebron.net
                Article
                copd-12-1173
                10.2147/COPD.S128234
                5402919
                © 2017 Ramon et al. This work is published and licensed by Dove Medical Press Limited

                The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                Categories
                Original Research

                Respiratory medicine

                physical activity, copd, symptoms

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