Universidad Rey Juan Carlos

This study is testing whether wearing a special suit that delivers mild electrical muscle stimulation can help people with Long COVID. The goal is to see if it reduces their persistent fatigue and helps them do daily activities more easily. In this small, early trial, 30 particip…

This study aims to understand the experiences of family members who care for people with Alzheimer's disease, both during caregiving and after the patient's death. Researchers will interview 66 caregivers and use questionnaires to measure how caregiving affects their emotional we…

This study aims to understand if the way you take caffeine—like in a pill, coffee, gum, or mouth rinse—changes how much fat your body burns during a one-hour bike ride. Researchers will compare each form to a fake version (placebo) in healthy adults who exercise regularly. The go…