Long-term effects of web-based pedometer-mediated intervention on COPD exacerbations.

Area of Science:

• Pulmonary Medicine
• Digital Health
• Chronic Disease Management

Background:

• Technology-based physical activity (PA) interventions show promise for improving daily step counts and health-related quality of life (HRQL) in COPD patients.
• However, their impact on long-term clinical outcomes, specifically acute exacerbations (AEs), remains largely unknown.

Purpose of the Study:

• To investigate the effect of a 3-month internet-mediated, pedometer-based PA intervention on the risk of AEs in U.S. Veterans with stable COPD.
• To assess the intervention's impact on daily step counts, HRQL, and self-efficacy over a 15-month follow-up period.

Main Methods:

• Randomized controlled trial with 109 U.S. Veterans with stable COPD (1:1 allocation).
• Intervention group received a pedometer plus a website with feedback, goal-setting, education, and a forum; control group received a pedometer alone for 3 months.
• AEs were monitored every 3 months for ~15 months; daily step counts, HRQL, and self-efficacy were assessed at baseline, 3, 6, and 12 months.

Main Results:

• No significant baseline differences between groups in age, FEV1, daily steps, prior AEs, or follow-up duration.
• The intervention group demonstrated a significantly reduced risk of AEs (Rate Ratio = 0.51, 95% CI [0.31-0.85]) compared to the control group.
• No significant between-group differences were observed in changes in average daily step count, HRQL, or self-efficacy at 6 and 12 months post-enrollment.

Conclusions:

• A 3-month internet-mediated, pedometer-based PA intervention was associated with a reduced risk of COPD-related AEs over 12-15 months.
• The findings suggest that technology-assisted PA interventions may be a valuable tool for managing COPD exacerbations.
• Further research is warranted to explore the mechanisms behind this AE reduction and optimize intervention strategies.