Statistical analyses
BLOOD
If a participant was missing data for two or more visits, they were excluded from the initial analysis. The data of subjects whose capsule intake rate was 80 to 120% were used for analysis, but data of those who exceeded or fell below the range were excluded from the initial analysis (Time to exhaustion values were evaluated using a series of separate repeated measures analyses of variance (ANOVAs) for treatment (SBP vs. PL) by TTE bout (90%, 100%, and 110%). Blood flow and vessel diameter variables were evaluated using separate repeated measures ANOVAs for each time point (1hrPrEX, 90%, 100%, 110%, and 30minPEX) between treatments; blood analyte variables were evaluated using a similar approach. Analyses were performed using SPSS (Version 26.0; IBM, Somers, NY, USA) with statistical significance set 