Active for Life: Chronic Obstructive Pulmonary Disease

Physical inactivity is a growing health problem in the United States, especially for older
people with chronic diseases such as COPD; in fact people with COPD are among the least
active. Low levels of physical activity (PA) are associated with negative health outcomes
including an increase in mortality and COPD exacerbations. Current PA guidelines focus on
moderate-to-vigorous physical activities (MVPAs) that are too strenuous and not feasible for
long term maintenance in many people with COPD. The investigators propose a new paradigm for
promoting PA in this population; focus on increasing time spent in light physical activity
(LPA) and decreasing time spent in sedentary behavior. Growing evidence suggests that
substantial health benefits are associated with increases in the volume of LPA. The
investigators are testing the efficacy of the Active-for-Life (Active-Life) intervention. The
central hypothesis is that Active-Life will have positive effects on objectively measured PA.
Active-Life is a 10 week intervention designed to increase total PA with an emphasis on
increasing the time spent in LPA and decreasing sedentary time. Active-Life establishes a
goal for subjects, to increase total PA, combined LPA and MVPA, at least 60 minutes a day.
This far exceeds the effects of other published PA interventions for people with COPD and if
successful will advance PA science in clinically important ways. The Active-Life program was
developed by Dr. Larson and through a series of preliminary studies; its feasibility is well
established and preliminary data are promising. The investigators are conducting a randomized
controlled trial comparing Active-Life against an active control. They will enroll 183 people
with moderate to very severe COPD. Outcomes will be measured at baseline, end of the 10 week
intervention and at 3, 6 and 12 months after the end of the intervention. The primary
dependent variables are objectively measured PA and sedentary behavior, measured with
ActivPAL and Actigraph accelerometers simultaneously. Secondary outcome measures are
indicators of frailty: 6-minute distance walk, isometric strength of knee flexors and
extensors, Short Physical Performance Battery and self-reported physical function. Potential
mediators include barriers-efficacy for PA and outcome expectations for PA.

Inclusion Criteria:

- No acute exacerbations or major illnesses requiring hospitalization in the last 8
weeks.

- No history of other major lung diseases as primary pulmonary problem, history of a
recent heart attack or recent onset of chest pains with activity or increasing
episodes of chest pain (unstable angina).

- No other health problems or mobility problems that limit physical activity.

- Sedentary (less than 30 minutes of moderate activity 3 days/week)

Exclusion Criteria:

- Acute exacerbations or major illnesses requiring hospitalization in the last 8 weeks.

- History of other major lung diseases as primary pulmonary problem, history of a recent
heart attack or recent onset of chest pains with activity or increasing episodes of
chest pain (unstable angina).

- Other health problems or mobility problems that limit physical activity.

- Participated in a structured exercise program or pulmonary rehabilitation within the
last year.