Henry, Allison2025-05-222025-05-222025-05-22https://hdl.handle.net/10919/134193Objectives: To explore the use and perceptions of ergogenic aids among collegiate swimmers and to identify their knowledge and primary sources of information regarding ergogenic aids. Methods: A mixed-methods survey was used to investigate ergogenic aid use, types of ergogenic aids that are used, reasons for their use, and perceived performance effects of the ergogenic aids in swim athletes at two NCAA Division I schools. Results: 38 Division I swimmers completed the survey. Males reported higher current use than females (p < 0.05). Most believed ergogenic aids enhance performance but lacked confidence identifying NCAA-banned substances. Scientific research and registered dietitians were top influences for information on ergogenic aids; social media had little impact. 92% of participants were open to modifying ergogenic aid use with better education. Conclusion: This study contributes to the growing body of research on ergogenic aid use in collegiate swimming by uncovering usage patterns, influential information sources, and critical knowledge gaps. Findings emphasize the need for athletic departments and sports dietitians to implement accessible, evidence-based education and empowers swimmers to make informed, ethical, and effective decisions regarding ergogenic aid use.application/pdfenAttribution 4.0 Internationalergogenic aidscollegiate swimmersperformance enhancementcreatineprotein powderscaffeinesodium bicarbonatebeta-alaninenitratesupplement stackingMaster's project