Johannes Gutenberg University Mainz

This trial tests whether a specific breathing exercise, called resonant frequency breathing with heart rate variability biofeedback, can improve how the body handles sugar in people with prediabetes. The training aims to calm the body's stress response by increasing heart rate va…

This study follows 200 glaucoma patients who received a tiny eye implant called Hydrus along with cataract surgery. Researchers want to see if the implant still helps control eye pressure after 8 to 14 years. The goal is to understand how well the implant works over the long term…

This study investigates whether a personalized exercise program can improve physical performance and reduce fatigue in children and adolescents with cancer. Participants will engage in supervised and home-based training sessions during and after their cancer treatment. The goal i…

This study looks at whether a simple neck ultrasound can help doctors predict if a patient needs more fluids during major abdominal surgery. About 84 adults having planned abdominal surgery will take part. The goal is to see if changes in blood flow in the carotid artery can reli…

This study compares two types of exposure therapy for agoraphobia: real-life exposure and virtual reality exposure. Researchers will measure how these therapies affect body awareness and stress-related chemicals. The goal is to understand why therapy works and how to improve it f…