Data from American Journal of Epidemiology - Curated by EPG Health - Date available 01 May 2008


Free full text

Original date published

1 May 2008

Original format

Print publication

The authors' objective was to analyze the impact of respiratory impairment on the risk of physical functional limitations among adults with chronic obstructive pulmonary disease (COPD). They hypothesized that greater pulmonary function decrement would result in a broad array of physical functional limitations involving organ systems remote from the lung, a key step in the pathway leading to overall disability. The authors used baseline data from the Function, Living, Outcomes, and Work (FLOW) study, a prospective cohort study of adults with COPD recruited from northern California in 2005-2007. They studied the impact of pulmonary function impairment on the risk of functional limitations using validated measures: lower extremity function (Short Physical Performance Battery), submaximal exercise performance (6-Minute Walk Test), standing balance (Functional Reach Test), skeletal muscle strength (manual muscle testing with dynamometry), and self-reported functional limitation (standardized item battery). Multiple variable analysis was used to control for confounding by age, sex, race, height, educational attainment, and cigarette smoking. Greater pulmonary function impairment, as evidenced by lower forced expiratory volume in 1 second (FEV(1)), was associated with poorer Short Physical Performance Battery scores and less distance walked during the 6-Minute Walk Test. Lower forced expiratory volume in 1 second was also associated with weaker muscle strength and with a greater risk of self-reported functional limitation (p < 0.05). In conclusion, pulmonary function impairment is associated with multiple manifestations of physical functional limitation among COPD patients. Longitudinal follow-up can delineate the impact of these functional limitations on the prospective risk of disability, guiding preventive strategies that could attenuate the disablement process.

Data sources

Read abstract on library site Access full article


You will need to login, to leave a comment. is not monitored for collection of adverse event reports. Any adverse events should be reported to your national reporting agency and/or the manufacturer.

Learning Zones

An Learning Zone (LZ) is an area of the site dedicated to providing detailed self-directed medical education about a disease, condition or procedure.

Chronic Obstructive Pulmonary Disease (COPD)

Chronic Obstructive Pulmonary Disease (COPD)

View highlights from recent congresses presented in new expert videos with leading physicians.

+ 7 more

Sleep Apnea

Sleep Apnea

Sleep apnea is a chronic condition characterised by recurrent interruptions in breathing throughout the sleep cycle. Learn about the two main types of sleep apnea and hear from experts as they present the latest research at the Sleep and Breathing conference (Marseille, 2019).

Cystic Fibrosis Knowledge Centre

Cystic Fibrosis Knowledge Centre

View disease awareness information, treatment options and European Cystic Fibrosis Society best practice guidelines.

Load more

Related Content