Ghent University Hospital

The final study today is the one I've been building toward, and I want to give it the time it deserves.

This comes from PLOS One, published in August 2026 by Fian Hermans and Helene DeMeyer at Ghent University Hospital, along with a large multidisciplinary team, including pulmonologists, physiotherapists, and respiratory scientists.

The title is The Relation Between Physical Activity and Cardiac Autonomic Dysfunction in Patients with Chronic Obstructive Pulmonary Disease.

Let me start with the population context, because it shapes everything that follows.

The question the study is investigating is whether we can detect a meaningful signal of autonomic improvement in patients who increase their physical activity and which HRV metrics are most sensitive to that signal.

The study was nested within a larger randomized controlled trial of physical activity coaching in COPD.

36 patients at Ghent University Hospital were enrolled.

The mean age was 69 years, 69% male.