{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T11:39:34Z","timestamp":1791200374410,"version":"4.2.0"},"reference-count":47,"publisher":"Elsevier BV","issue":"4","license":[{"start":{"date-parts":[[2012,4,1]],"date-time":"2012-04-01T00:00:00Z","timestamp":1333238400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2012,4,1]],"date-time":"2012-04-01T00:00:00Z","timestamp":1333238400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2014,4,1]],"date-time":"2014-04-01T00:00:00Z","timestamp":1396310400000},"content-version":"vor","delay-in-days":730,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","resmedjournal.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Respiratory Medicine"],"published-print":{"date-parts":[[2012,4]]},"DOI":"10.1016\/j.rmed.2011.10.022","type":"journal-article","created":{"date-parts":[[2011,12,2]],"date-time":"2011-12-02T01:40:42Z","timestamp":1322790042000},"page":"522-530","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":127,"title":["Physical activity monitoring in COPD: Compliance and associations with clinical characteristics in a multicenter study"],"prefix":"10.1016","volume":"106","author":[{"given":"Benjamin","family":"Waschki","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martijn A.","family":"Spruit","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henrik","family":"Watz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul S.","family":"Albert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dinesh","family":"Shrikrishna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miriam","family":"Groenen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cayley","family":"Smith","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William D.-C.","family":"Man","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruth","family":"Tal-Singer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa D.","family":"Edwards","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter M.A.","family":"Calverley","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helgo","family":"Magnussen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael I.","family":"Polkey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emiel F.M.","family":"Wouters","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"issue":"7","key":"10.1016\/j.rmed.2011.10.022_bib1","doi-asserted-by":"crossref","first-page":"1510","DOI":"10.1249\/MSS.0b013e3181a0c95c","article-title":"American College of Sports Medicine position stand. Exercise and physical activity for older adults","volume":"41","author":"Chodzko-Zajko","year":"2009","journal-title":"Med Sci Sports Exerc"},{"issue":"9","key":"10.1016\/j.rmed.2011.10.022_bib2","doi-asserted-by":"crossref","first-page":"972","DOI":"10.1164\/rccm.200407-855OC","article-title":"Characteristics of physical activities in daily life in chronic obstructive pulmonary disease","volume":"171","author":"Pitta","year":"2005","journal-title":"Am J Respir Crit Care Med"},{"issue":"7","key":"10.1016\/j.rmed.2011.10.022_bib3","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1016\/j.rmed.2010.01.012","article-title":"Physical inactivity in patients with COPD, a controlled multi-center pilot-study","volume":"104","author":"Troosters","year":"2010","journal-title":"Respir Med"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib4","doi-asserted-by":"crossref","first-page":"262","DOI":"10.1183\/09031936.00024608","article-title":"Physical activity in patients with COPD","volume":"33","author":"Watz","year":"2009","journal-title":"Eur Respir J"},{"issue":"6","key":"10.1016\/j.rmed.2011.10.022_bib5","doi-asserted-by":"crossref","first-page":"506","DOI":"10.1164\/rccm.200812-1873OC","article-title":"Daily physical activity in patients with chronic obstructive pulmonary disease is mainly associated with dynamic hyperinflation","volume":"180","author":"Garcia-Rio","year":"2009","journal-title":"Am J Respir Crit Care Med"},{"issue":"7","key":"10.1016\/j.rmed.2011.10.022_bib6","doi-asserted-by":"crossref","first-page":"743","DOI":"10.1164\/rccm.200707-1011OC","article-title":"Extrapulmonary effects of chronic obstructive pulmonary disease on physical activity: a cross-sectional study","volume":"177","author":"Watz","year":"2008","journal-title":"Am J Respir Crit Care Med"},{"issue":"4","key":"10.1016\/j.rmed.2011.10.022_bib7","doi-asserted-by":"crossref","first-page":"1039","DOI":"10.1378\/chest.09-0393","article-title":"The metabolic syndrome in patients with chronic bronchitis and COPD: frequency and associated consequences for systemic inflammation and physical inactivity","volume":"136","author":"Watz","year":"2009","journal-title":"Chest"},{"issue":"9","key":"10.1016\/j.rmed.2011.10.022_bib8","doi-asserted-by":"crossref","first-page":"772","DOI":"10.1136\/thx.2006.060145","article-title":"Regular physical activity reduces hospital admission and mortality in chronic obstructive pulmonary disease: a population based cohort study","volume":"61","author":"Garcia-Aymerich","year":"2006","journal-title":"Thorax"},{"issue":"3","key":"10.1016\/j.rmed.2011.10.022_bib9","doi-asserted-by":"crossref","first-page":"536","DOI":"10.1378\/chest.129.3.536","article-title":"Physical activity and hospitalization for exacerbation of COPD","volume":"129","author":"Pitta","year":"2006","journal-title":"Chest"},{"key":"10.1016\/j.rmed.2011.10.022_bib10","doi-asserted-by":"crossref","DOI":"10.1378\/chest.10-2521","article-title":"Physical activity is the strongest predictor of all-cause mortality in patients with chronic obstructive pulmonary disease: a prospective cohort study","author":"Waschki","year":"2011","journal-title":"Chest"},{"issue":"9","key":"10.1016\/j.rmed.2011.10.022_bib11","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1042\/CS20090458","article-title":"Does physical inactivity cause chronic obstructive pulmonary disease?","volume":"118","author":"Hopkinson","year":"2010","journal-title":"Clin Sci (Lond)"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib12","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1183\/09031936.00176808","article-title":"Chicken or egg: physical activity in COPD revisited","volume":"33","author":"Polkey","year":"2009","journal-title":"Eur Respir J"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib13","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1378\/chest.07-2655","article-title":"Are patients with COPD more active after pulmonary rehabilitation?","volume":"134","author":"Pitta","year":"2008","journal-title":"Chest"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib14","doi-asserted-by":"crossref","first-page":"274","DOI":"10.1016\/j.pec.2008.10.005","article-title":"Enhancement of daily physical activity increases physical fitness of outclinic COPD patients: results of an exercise counseling program","volume":"75","author":"Hospes","year":"2009","journal-title":"Patient Educ Couns"},{"issue":"1","key":"10.1016\/j.rmed.2011.10.022_bib15","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.rmed.2007.08.011","article-title":"Intervention by phone calls raises domiciliary activity and exercise capacity in patients with severe COPD","volume":"102","author":"Wewel","year":"2008","journal-title":"Respir Med"},{"issue":"8","key":"10.1016\/j.rmed.2011.10.022_bib16","doi-asserted-by":"crossref","first-page":"683","DOI":"10.1136\/thx.2007.087130","article-title":"Lower limb activity and its determinants in COPD","volume":"63","author":"Walker","year":"2008","journal-title":"Thorax"},{"issue":"10","key":"10.1016\/j.rmed.2011.10.022_bib17","doi-asserted-by":"crossref","first-page":"1979","DOI":"10.1016\/j.apmr.2005.04.016","article-title":"Activity monitoring for assessment of physical activities in daily life in patients with chronic obstructive pulmonary disease","volume":"86","author":"Pitta","year":"2005","journal-title":"Arch Phys Med Rehabil"},{"issue":"5","key":"10.1016\/j.rmed.2011.10.022_bib18","doi-asserted-by":"crossref","first-page":"1040","DOI":"10.1183\/09031936.06.00064105","article-title":"Quantifying physical activity in daily life with questionnaires and motion sensors in COPD","volume":"27","author":"Pitta","year":"2006","journal-title":"Eur Respir J"},{"key":"10.1016\/j.rmed.2011.10.022_bib19","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1186\/1465-9921-11-79","article-title":"Outcome measures in chronic obstructive pulmonary disease (COPD): strengths and limitations","volume":"11","author":"Glaab","year":"2010","journal-title":"Respir Res"},{"issue":"11 Suppl","key":"10.1016\/j.rmed.2011.10.022_bib20","doi-asserted-by":"crossref","first-page":"S582","DOI":"10.1249\/01.mss.0000185292.71933.91","article-title":"Accelerometer use in physical activity: best practices and research recommendations","volume":"37","author":"Ward","year":"2005","journal-title":"Med Sci Sports Exerc"},{"issue":"3","key":"10.1016\/j.rmed.2011.10.022_bib21","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1016\/j.rmed.2008.09.019","article-title":"Comparison of daily physical activity between COPD patients from Central Europe and South America","volume":"103","author":"Pitta","year":"2009","journal-title":"Respir Med"},{"issue":"4","key":"10.1016\/j.rmed.2011.10.022_bib22","doi-asserted-by":"crossref","first-page":"869","DOI":"10.1183\/09031936.00111707","article-title":"Evaluation of COPD Longitudinally to Identify Predictive Surrogate End-points (ECLIPSE)","volume":"31","author":"Vestbo","year":"2008","journal-title":"Eur Respir J"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib23","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1080\/15412550701246658","article-title":"Activity monitoring and energy expenditure in COPD patients: a validation study","volume":"4","author":"Patel","year":"2007","journal-title":"COPD"},{"issue":"3","key":"10.1016\/j.rmed.2011.10.022_bib24","doi-asserted-by":"crossref","first-page":"742","DOI":"10.1093\/ajcn\/85.3.742","article-title":"Evaluation of a portable device to measure daily energy expenditure in free-living adults","volume":"85","author":"St Onge","year":"2007","journal-title":"Am J Clin Nutr"},{"issue":"6","key":"10.1016\/j.rmed.2011.10.022_bib25","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1136\/thx.2009.128702","article-title":"Measurement properties of the SenseWear armband in adults with chronic obstructive pulmonary disease","volume":"65","author":"Hill","year":"2010","journal-title":"Thorax"},{"key":"10.1016\/j.rmed.2011.10.022_bib26","first-page":"A369","article-title":"Quantification of physical activity in daily life of patients with COPD: comparison of two devices and two parameters of activity measurement [abstract]","volume":"175","author":"Watz","year":"2007","journal-title":"Am J Respir Crit Care Med"},{"issue":"5","key":"10.1016\/j.rmed.2011.10.022_bib27","doi-asserted-by":"crossref","first-page":"1356","DOI":"10.1152\/japplphysiol.01160.2005","article-title":"Muscle metabolic function and free-living physical activity","volume":"101","author":"Hunter","year":"2006","journal-title":"J Appl Physiol"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib28","first-page":"72","article-title":"Human energy expenditure in affluent societies: an analysis of 574 doubly-labelled water measurements","volume":"50","author":"Black","year":"1996","journal-title":"Eur J Clin Nutr"},{"issue":"1","key":"10.1016\/j.rmed.2011.10.022_bib29","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1164\/ajrccm.166.1.at1102","article-title":"guidelines for the six-minute walk test","volume":"166","year":"2002","journal-title":"Am J Respir Crit Care Med"},{"issue":"6","key":"10.1016\/j.rmed.2011.10.022_bib30","doi-asserted-by":"crossref","first-page":"849","DOI":"10.1016\/j.rmed.2009.12.007","article-title":"Determinants of poor 6-min walking distance in patients with COPD: the ECLIPSE cohort","volume":"104","author":"Spruit","year":"2010","journal-title":"Respir Med"},{"issue":"8","key":"10.1016\/j.rmed.2011.10.022_bib31","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1038\/sj.ejcn.1601625","article-title":"Body composition estimated by bioelectrical impedance in the Swedish elderly. Development of population-based prediction equation and reference values of fat-free mass and body fat for 70- and 75-y olds","volume":"57","author":"Dey","year":"2003","journal-title":"Eur J Clin Nutr"},{"issue":"1","key":"10.1016\/j.rmed.2011.10.022_bib32","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/j.rmed.2009.07.004","article-title":"Critical view on diagnosing muscle wasting by single-frequency bio-electrical impedance in COPD","volume":"104","author":"Rutten","year":"2010","journal-title":"Respir Med"},{"issue":"1","key":"10.1016\/j.rmed.2011.10.022_bib33","first-page":"79","article-title":"Body mass, fat-free body mass, and prognosis in patients with chronic obstructive pulmonary disease from a random population sample: findings from the Copenhagen City Heart Study","volume":"173","author":"Vestbo","year":"2006","journal-title":"Am J Respir Crit Care Med"},{"issue":"3","key":"10.1016\/j.rmed.2011.10.022_bib34","first-page":"283","article-title":"Human skeletal muscle function: description of tests and normal values","volume":"52","author":"Edwards","year":"1977","journal-title":"Clin Sci Mol Med"},{"issue":"1","key":"10.1016\/j.rmed.2011.10.022_bib35","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1183\/09031936.00104909","article-title":"The prevalence of quadriceps weakness in COPD and the relationship with disease severity","volume":"36","author":"Seymour","year":"2010","journal-title":"Eur Respir J"},{"issue":"6","key":"10.1016\/j.rmed.2011.10.022_bib36","doi-asserted-by":"crossref","first-page":"1008","DOI":"10.1164\/ajrccm.164.6.2010067","article-title":"Elevated plasma fibrinogen associated with reduced pulmonary function and increased risk of chronic obstructive pulmonary disease","volume":"164","author":"Dahl","year":"2001","journal-title":"Am J Respir Crit Care Med"},{"issue":"7","key":"10.1016\/j.rmed.2011.10.022_bib37","doi-asserted-by":"crossref","first-page":"574","DOI":"10.1136\/thx.2003.019588","article-title":"Association between chronic obstructive pulmonary disease and systemic inflammation: a systematic review and a meta-analysis","volume":"59","author":"Gan","year":"2004","journal-title":"Thorax"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib38","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1378\/chest.07-1342","article-title":"Increased systemic inflammation is a risk factor for COPD exacerbations","volume":"133","author":"Groenewegen","year":"2008","journal-title":"Chest"},{"issue":"2","key":"10.1016\/j.rmed.2011.10.022_bib39","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1002\/cncr.10245","article-title":"Fatigue in cancer patients compared with fatigue in the general United States population","volume":"94","author":"Cella","year":"2002","journal-title":"Cancer"},{"issue":"12","key":"10.1016\/j.rmed.2011.10.022_bib40","doi-asserted-by":"crossref","first-page":"1128","DOI":"10.1056\/NEJMoa0909883","article-title":"Susceptibility to exacerbation in chronic obstructive pulmonary disease","volume":"363","author":"Hurst","year":"2010","journal-title":"N Engl J Med"},{"issue":"6","key":"10.1016\/j.rmed.2011.10.022_bib41","doi-asserted-by":"crossref","first-page":"532","DOI":"10.1164\/rccm.200703-456SO","article-title":"Global Strategy for the Diagnosis, management, and Prevention of chronic obstructive pulmonary disease: GOLD Executive Summary","volume":"176","author":"Rabe","year":"2007","journal-title":"Am J Respir Crit Care Med"},{"issue":"10","key":"10.1016\/j.rmed.2011.10.022_bib42","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1056\/NEJMoa021322","article-title":"The body-mass index, airflow obstruction, dyspnea, and exercise capacity index in chronic obstructive pulmonary disease","volume":"350","author":"Celli","year":"2004","journal-title":"N Engl J Med"},{"issue":"5","key":"10.1016\/j.rmed.2011.10.022_bib43","doi-asserted-by":"crossref","first-page":"1359","DOI":"10.1378\/chest.117.5.1359","article-title":"Quantitating physical activity in COPD using a triaxial accelerometer","volume":"117","author":"Steele","year":"2000","journal-title":"Chest"},{"issue":"11","key":"10.1016\/j.rmed.2011.10.022_bib44","doi-asserted-by":"crossref","first-page":"981","DOI":"10.1136\/thx.52.11.981","article-title":"Decreased mechanical efficiency in clinically stable patients with COPD","volume":"52","author":"Baarends","year":"1997","journal-title":"Thorax"},{"key":"10.1016\/j.rmed.2011.10.022_bib45","doi-asserted-by":"crossref","DOI":"10.1378\/chest.10-3005","article-title":"Task-related oxygen uptake during domestic activities of daily life in patients with COPD and healthy elderly subjects","author":"Vaes","year":"2011","journal-title":"Chest"},{"issue":"5","key":"10.1016\/j.rmed.2011.10.022_bib46","first-page":"458","article-title":"Quantifying physical activity in COPD: different measures for different purposes","volume":"64","author":"Langer","year":"2009","journal-title":"Thorax"},{"issue":"Pt 23","key":"10.1016\/j.rmed.2011.10.022_bib47","doi-asserted-by":"crossref","first-page":"5559","DOI":"10.1113\/jphysiol.2009.179515","article-title":"The diseasome of physical inactivity\u2013and the role of myokines in muscle\u2013fat cross talk","volume":"587","author":"Pedersen","year":"2009","journal-title":"J Physiol"}],"container-title":["Respiratory Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0954611111003891?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0954611111003891?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T11:18:02Z","timestamp":1760613482000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0954611111003891"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,4]]},"references-count":47,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2012,4]]}},"alternative-id":["S0954611111003891"],"URL":"https:\/\/doi.org\/10.1016\/j.rmed.2011.10.022","relation":{},"ISSN":["0954-6111"],"issn-type":[{"value":"0954-6111","type":"print"}],"subject":[],"published":{"date-parts":[[2012,4]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Physical activity monitoring in COPD: Compliance and associations with clinical characteristics in a multicenter study","name":"articletitle","label":"Article Title"},{"value":"Respiratory Medicine","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.rmed.2011.10.022","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2011 Elsevier Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}