Had shoulder replacement surgery? Help us learn how long implants last and how well they work over time. We're tracking patients with shoulder replacements to better understand results years after surgery. Your experience can improve care for future patients.

We're testing a new blood test called Multi-Cancer Detection (MCD). This test looks for signs of many types of cancer. We want to learn if it can find cancer early when treatment might work better. Your participation could make a big difference. Thank you for considering joining us!

Do you have pain at the front of your knee? Does this pain get worse with using stairs, running, jumping, or prolonged sitting? Do you participate in any type/level of sport? Then we want to hear from you!! We are conducting a fully online survey study to understand what influences physical activity levels in athletes with anterior knee pain (pain at the front of your knee). If you complete all 7 surveys you will be entered to win one of five $50 Amazon gift cards.

Would you like to learn more about your body composition and resting metabolic rate? If you identify as Asian and are between 18-35 years old, you may be eligible to participate in a research study evaluating body composition and metabolic health in multiple Asian ethnicities.

Big Discoveries Start Small! Looking for Young Explorers to Join Our Screen Time Study Have a child ages 3-8? Spectra Discovery is a one-week research study exploring how wearable devices might track screen time in young children. Your child will wear fake glasses, a shirt clip, and a belt activity counter while using a study-provided tablet. Parents will complete brief daily surveys and device logs. Orientation can happen at home or at our Chapel Hill office. Parents are compensated, and kids receive a special thank-you gift! Help us better understand screen use in children-click to learn more.

Preventing walking disability in our rapidly aging population is an enormous public health challenge. Fundamental to their loss of functional mobility is that the muscles needed to power walking experience decline in function with age. Wearable assistive devices can be designed to augment the function of these muscles and may make walking easier. If you are a healthy older adult, you may be able to participate in a training intervention to determine the feasibility of a passive wearable ankle device that strengthens walking dynamics and decreases fall risk.

We want to hear from you! If you are a college student, please take our quick survey. It will take about 15 minutes. We want to know how you feel about being part of our campus. Your answers are private. You can also enter to win a $20 Amazon gift card. We have 50 gift cards to give away! You don't have to do the survey to enter the raffle.

How do infants react to social stimuli? We are looking for families with an infants under the age of two to participate in an eye tracking study. Our study aims to understand infant social interest through changes in pupil size in response to social stimuli.

Do you want to help in the design of a new device that can electronically measure and track your strength? We are testing a new system that uses an electronic resistance exercise band and an 'app' designed for older adults to improve strength and prevent weakness. We will provide $25 in gift card incentives.

Feel anxious when your body goes into "fight or flight?" You may be eligible to participate in a research study to learn how difficult emotions, such as anxiety and fear, relate to feelings in the body. Compensation provided.