[Home-based exercise training and physical activity level over one year in COPD patients]

Area of Science:

• Pulmonary Rehabilitation
• Exercise Physiology
• Chronic Obstructive Pulmonary Disease (COPD) Management

Background:

• Chronic obstructive pulmonary disease (COPD) significantly impacts patients' physical activity levels and quality of life.
• Home-based exercise interventions are being explored as accessible alternatives to traditional center-based pulmonary rehabilitation.

Purpose of the Study:

• To assess the feasibility and effectiveness of an exclusively home-based exercise training program for COPD patients.
• To determine if improvements in physical activity are sustained one year after the intervention.

Main Methods:

• A cohort of 100 COPD patients (FEV1=42.6% predicted) participated in the study.
• The program included 25 weekly sessions of supervised cycle ergometry, followed by 12 months of monthly supervised follow-up.
• Assessments included the 6-minute walking test, endurance tests, BODE index, and activity monitoring pre-intervention, post-intervention, and at 1-year follow-up.

Main Results:

• Approximately 80% of patients completed the program, demonstrating significant improvements in exercise tolerance and daily physical activity.
• These improvements were maintained one year post-intervention for the majority of participants.
• Patients with more severe COPD showed a decline in sustained benefits and daily physical activity at the 1-year mark.

Conclusions:

• The home-based exercise training program proved feasible and effective for enhancing and sustaining physical activity in most COPD patients.
• While beneficial for many, the program's long-term effectiveness was limited in patients with severe COPD.
• Alternative exercise strategies should be investigated for severe COPD populations to ensure sustained benefits.