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, all student-athletes used supplements regardless of division. There were significant differences in race, ethnicity, sports dietitian access, name, image, and likeness (NIL), advisement to consume NS, and knowledge of NS between the divisions (all P-values < 0.01). Unadjusted regression models showed that being in an upper-level academic standing was associated with higher odds of using sports food and ergogenic supplements than student-athletes with a lower-level academic standing. However, multivariable logistic regression analysis revealed that none of the demographic and athletic characteristics significantly affected supplement usage. Allocating resources for access to sports dietitians and supplement education for all divisions may benefit student-athletes knowledge and safety.

Insulin Resistance and Serum Magnesium Concentrations among Women with Polycystic Ovary Syndrome.

Polycystic ovary syndrome (PCOS) affects ∼1 in 10 women worldwide. Hypomagnesemia may worsen insulin resistance (IR) due to the role magnesium (Mg) plays in glucose metabolism. This review explores the relation between serum Mg and IR among women with PCOS. A review of primary research focusing on both serum Mg and women with PCOS was conducted from 2011 to 2019. Studies reviewed included human subjects, written in the English language, and limited to community-dwelling women aged ≥18 y. A total of 7 articles were reviewed. The findings from 4 epidemiological analytic studies evaluating serum Mg status suggest there may be a relation between serum Mg concentrations and IR among women with PCOS. However, among the 3 experimental trials, Mg supplementation inconsistently impacted IR among women with PCOS. Women with PCOS are more likely to underconsume Mg-rich foods and have a greater likelihood of lower serum Mg concentrations. Although it remains unclear if dietary Mg and/or supplementation should be a nutritional strategy for all women with PCOS, current research indicates an association between adequate Mg status and improved IR. Further research evaluating dietary interventions and supplementation is warranted.