Performs and documents vital signs, anthropometric measurements (height, weight, waist circumference), and body composition assessments (e.g., Bod Pod, Pea Pod, InBody 770) according to study protocols (training to be provided on more specialized pieces of equipment). The position requires frequent direct communication with research participants whose primary language may be English or Spanish, including participant engagement, administration of study questionnaires, explanation of study procedures, collection of participant information, and documentation of study-related information.