Predictors of Third-Party Tested Nutritional Supplementation Use Among DI and DIII Student-Athletes at A Northeast University

Nutritional supplements (NS) are linked to adverse events and unintentional doping among college-athletes. The use of third-party tested (TPT) NS can increase safety and reduce the risk of inadvertent consumption of banned substances. The purpose of this study was to examine self-reported use of TPT supplements between the National Collegiate Athletic Association (NCAA) Division I (DI) and Division III (DIII) college-athletes and explore the potential predictors of TPT use. This cross-sectional study used data from a web-based, 50-question survey on supplement use, behaviors, and knowledge. A total of 271 individuals completed the survey, 118 athletes (66.9% DI, 33.1% DIII) were included in the analysis due to completion of TPT NS questions. Among this sample, 80.5% of student-athletes reported use of TPT NS, however, only 17.8% of students reported consistent use of TPT NS. In the multivariable model adjusted for athletic division, sex, and sport-type, student-athletes who preferred information from a strength and conditioning coach or athletic trainer were 69% less likely to report consistent use of TPT NS across all categories when compared to those who preferred going to a registered dietitian nutritionist (RDN). Student-athletes with limited access to an RD/RDN were more likely to use an athletic trainer or strength and conditioning coach for supplement information. Having dedicated RDNs within athletic departments may benefit athletes when it comes to safe NS use. Programs should also consider additional supplement education to athletic trainers and strength and conditioning coaches to help ensure safe and effective use of NS.