Scientists probe why hearts of people with down syndrome react differently to stress

This study looks at how the autonomic nervous system—which controls heart rate and blood pressure—works in people with Down syndrome. Researchers will measure stress responses using virtual reality, cold water, pain patches, caffeine, and exercise in 200 participants. The goal is to understand why people with Down syndrome often have a blunted heart rate response during activity, which may affect their physical fitness and overall health.