Nutritional Supplement Use and Athletic Characteristics among a Sample of NCAA Division I and Division III Student-Athletes

Due to documented adverse events, understanding the prevalence of nutritional supplements commonly used by athletes is essential. This cross-sectional study used data from a web-based survey conducted in February-March 2022. Participants were Division I (DI) and Division III (DIII) student-athletes of the National Collegiate Athletic Association (NCAA). Chi-square tests were conducted to identify the differences in the prevalence of demographic and athletic characteristics between the divisions. Multivariable odds ratios and 95% confidence intervals were calculated using logistic regression adjusting for potential confounders to determine the predictors of supplement usage. A total of 247 NCAA student-athletes (72.5% Division I, 27.5% Division III) completed the survey, yielding a 24.5% response rate. There were no significant differences between nutritional supplementation and NCAA divisions. Instead