Chronic Obstructive Pulmonary Disease
Conditions
Keywords
Exercise testing, Functional status, Pulmonary rehabilitation
Brief summary
A growing body of evidence suggests that in individuals with chronic lung disease their walk speed is related to their daily function and quality of life. It is possible to assess their usual (routine) and fast walking speeds by getting them to walk in a flat hallway. In individuals with chronic lung disease, we anticipate that their usual walk speed will be helpful in exercise prescription and use in multidimensional scoring systems. However, it is important to first determine the measurement properties of these two walk speeds.
Interventions
BEHAVIORALUsual and Fast Walking Speeds
Stable patients with chronic obstructive pulmonary disease will demonstrate their usual and fast walking speeds over a 30 m course, with speed calculated over the middle 10 m using optical sensors. The test will be repeated after a 5 minute rest; this procedure will then be repeated on two subsequent days, at the same time of day, within one week.
Sponsors
West Park Healthcare Centre
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Clinical and spirometric diagnosis of COPD * Able to provide written informed consent
Exclusion criteria
* Unstable cardiovascular disease * Acute respiratory exacerbation within 4 weeks * Neurologic or orthopedic limitation to walking * Inability to comprehend instructions in English
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Coefficient of repeatability for usual and fast walk speeds | At baseline and over 1 week period. | Participants will be asked to demonstrate their usual and fast walk speeds over the middle 10 meters of a 30 meter straight track using optical sensors and a hand-held stopwatch. Participants will be instructed to walk at their 'usual' and 'fast' speeds as standardized instructions. The walk test will be repeated after a 5 minute rest and then repeated on two subsequent days, at the same time of day, within one week. This will be simply observational in nature with no planned intervention aside for controlling walking environment. The primary outcome is going to report a change in walk speeds from baseline and at 1 and 2 days using repeated measures as described by Bland and Altman (reference below). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Agreement in walk speeds between optical sensors and stopwatch | Baseline and over 1 week of testing. | Assess agreement between the use of optical sensors and stop watch time for the usual and fast walk speeds. |
| Agreement in the Bode Index using six minute walk distance and usual walk speed. | Baseline | To assess agreement in the calculated Bode Index using the six minute walk distance versus estimated usual walk speed distance over 6 minutes. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Precision of achieving a targeted endurance time using the usual and fast walking speeds. | Baseline | The usual and fast walk speeds will be used to predict the test speed for a high-intensity constant-speed endurance test that will achieve an acceptable endurance time of 2-15 minutes. |
Countries
Canada
Outcome results
None listed