Healthy adult

This study tests whether a daily food supplement, taken for 30 days, can improve markers of cellular health in healthy adults aged 35 and over. The supplement contains ingredients thought to boost NAD+ levels and support energy production and antioxidant defenses. Researchers wil…

This pilot study tests whether a jaw tracking device can accurately detect where teeth touch when biting, compared to the traditional articulating paper method. Twenty healthy adults aged 20-25 will have their bite contacts recorded at different head positions using both methods.…

This study tests whether different types of relationship support—like online self-help, an online course, or face-to-face therapy—can improve relationship satisfaction and well-being for couples. About 400 couples from Helsinki will be randomly assigned to one of four programs or…

This study compares two laser settings to the usual method for removing ceramic braces. Ten healthy adults who finished orthodontic treatment will have their brackets removed with a laser or the standard tool. Researchers will measure tooth temperature, enamel damage, and pain to…

Researchers at the Medical University of Vienna are testing whether what a person eats before an eye scan changes the pictures taken of blood vessels in the retina. Ten healthy adults eat a high-fat meal on one day and a high-carbohydrate meal on another, then receive optical coh…

This trial tests whether wearable devices can measure how the body responds to everyday challenges like changes in salt intake, meals, fasting, and exercise in adults with endocrine or metabolic disorders. Participants wear home monitoring devices and follow different diet and ac…

This study investigates whether men and women show different physical and biological responses to resistance exercise, both after a single session and after eight weeks of training. Researchers will measure muscle changes, hormone levels, and other markers in 30 healthy adults. T…

This study tests whether adding finger extensor training to a standard flexor training routine improves climbing performance more than flexor training alone. Thirty-six healthy adult climbers will train twice weekly for six weeks. Researchers will measure finger strength, enduran…

This study looks at how the brain naturally turns down pain signals, a process called conditioned pain modulation (CPM). Researchers will use transcranial magnetic stimulation (TMS) to measure brain activity and apply mild pain (pressure, heat, cold) to 75 healthy adults. They al…

This study looks at how taking DA-5223 with or without food changes the way the body absorbs the drug. Healthy adults aged 19 to 55 will receive a single dose under different meal conditions. The goal is to understand food effects, not to treat any disease.

This study looks at how different types of palm oil affect appetite and gut hormones in 36 healthy adults. Participants eat muffins made with palm olein, palm kernel oil, or sunflower oil, then give blood samples and answer questionnaires over 4 hours. The goal is to see if palm …

This study tests whether a supplement called Vinitrox™, made from grape and apple polyphenols, can improve blood vessel function and exercise performance in healthy adults during moderate exercise in low-oxygen (hypoxic) conditions. 38 physically active volunteers will take eithe…

This study looks at how whole-body vibration changes reflexes in the leg muscles of healthy adults. Researchers want to understand if bones act like sensors that help control muscles when standing. About 27 people aged 20 to 45 will take part, and the results could help design be…

This study uses advanced full-body PET scans to see how the body handles sugar and amino acids in healthy people and those with non-alcoholic fatty liver disease (NAFLD). About 36 adults aged 18-70 will receive a radioactive tracer by mouth or IV and have scans to track nutrient …

This study looks at how high-intensity aerobic exercise affects the way healthy adults feel pain. Researchers will compare people who exercise multiple times to those who exercise just once, measuring pain thresholds and tolerance. The goal is to understand how the nervous system…