Trial reportThe European respiratory journal2015
The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary disease.
Trial report in The European respiratory journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 67 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Non-interventional Cross-over Study to Reduce Items of the Draft PROactive Tools as a Measure of Physical Activity in Daily Life in Patients With Chronic Obstructive Pulmonary Disease (COPD)
Innovative Central Line Securement Device: Line Complications and Quality of Life in the Pediatric Population as Compared to Traditional Securement Device
Who cites it
67 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Investigating the prognostic value of digital mobility outcomes in patients with chronic obstructive pulmonary disease: a systematic literature review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2023Pooled it
- Listening to the patients' voice: a conceptual framework of the walking experience.Age and ageing · 2023Pooled it
- Exercise capacity and physical activity in COPD patients treated with a LAMA/LABA combination: a systematic review and meta-analysis.Respiratory research · 2022Pooled it
- Oxygen for breathlessness in patients with chronic obstructive pulmonary disease who do not qualify for home oxygen therapy.The Cochrane database of systematic reviews · 2016Pooled it
- Singing for lung health following completion of pulmonary rehabilitation: feasibility of a randomised controlled trial.BMJ open respiratory research · 2026Trial
- A Long-Term Physical Activity Coaching Program for Patients with Chronic Obstructive Pulmonary Disease: A Randomized Controlled Trial.American journal of respiratory and critical care medicine · 2025Trial
- Communication About Sexuality (COSY) Encourages Physical Activity in COPD: A Randomised Trial.International journal of chronic obstructive pulmonary disease · 2025Trial
- Personalised Health Behaviour Support Programme in Adults With Post-COVID Syndrome: A Randomised, Controlled Pilot Feasibility Trial.Health expectations : an international journal of public participation in health care and health policy · 2024Trial
- Pulmonary rehabilitation in Iranian outpatients with mustard gas lung disease: a randomised controlled trial.BMJ open · 2024Trial
- Lung volume reduction surgeryThe European respiratory journal · 2023Trial
- Moving singing for lung health online in response to COVID-19: experience from a randomised controlled trial.BMJ open respiratory research · 2020Trial
- Trial
- Long-term efficacy and effectiveness of a behavioural and community-based exercise intervention (Urban Training) to increase physical activity in patients with COPD: a randomised controlled trial.The European respiratory journal · 2018Trial
- Comparing accelerometer, pedometer and a questionnaire for measuring physical activity in bronchiectasis: a validity and feasibility study?Respiratory research · 2017Trial
- ACTIVATE: the effect of aclidinium/formoterol on hyperinflation, exercise capacity, and physical activity in patients with COPD.International journal of chronic obstructive pulmonary disease · 2017Trial
- Trial
- Physical Activity Characteristics across GOLD Quadrants Depend on the Questionnaire Used.PloS one · 2016Trial
- Differential Outcomes Following 4 Weeks of Aclidinium/Formoterol in Patients with COPD: A Reanalysis of the ACTIVATE Study.International journal of chronic obstructive pulmonary diseaseTrial
- Validation of the General Practice Physical Activity Questionnaire after severe COVID-19.ERJ open research · 2026Article
- Sensor-based digital health technologies to capture endpoints in recent clinical trials: a scoping review.NPJ digital medicine · 2026Article
7 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
22 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
No current patient-centred instrument captures all dimensions of physical activity in chronic obstructive pulmonary disease (COPD). Our objective was item reduction and initial validation of two instruments to measure physical activity in COPD.Physical activity was assessed in a 6-week, randomised, two-way cross-over, multicentre study using PROactive draft questionnaires (daily and clinical visit versions) and two activity monitors. Item reduction followed an iterative process including classical and Rasch model analyses, and input from patients and clinical experts.236 COPD patients from five European centres were included. Results indicated the concept of physical activity in COPD had two domains, labelled "amount" and "difficulty". After item reduction, the daily PROactive instrument comprised nine items and the clinical visit contained 14. Both demonstrated good model fit (person separation index >0.7). Confirmatory factor analysis supported the bidimensional structure. Both instruments had good internal consistency (Cronbach's α>0.8), test-retest reliability (intraclass correlation coefficient ≥0.9) and exhibited moderate-to-high correlations (r>0.6) with related constructs and very low correlations (r<0.3) with unrelated constructs, providing evidence for construct validity.Daily and clinical visit "PROactive physical activity in COPD" instruments are hybrid tools combining a short patient-reported outcome questionnaire and two activity monitor variables which provide simple, valid and reliable measures of physical activity in COPD patients.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.